#07 – RGB LCD Shield
Project #7: RGB LCD Shield – MCP4131 – Mk10
Microchip Technology Inc – MCP4131
Features:
-7-bit: 128 Resistors with 129 Taps to VSS and VDD
-SPI compatible interface
-Automatic Recall of Potentiometer Wiper Settings Resistance Values: 5k Ohm, 10k Ohm, 50k Ohm, 100k Ohm
-Absolute (Rheostat): <100 ppm (typ.)
-Ratiometric (Potentiometer): <10 ppm (typ.)
Device Overview – Summary
The MCP41/423X devices are volatile, 7-bit (129 wiper steps) digital potentiometers with an SPI compatible interface. The MCP41/42XX family is available with end-to-end resistor values of 5K Ohm, 10K Ohm, 50k Ohm and 100K Ohm. These devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.
Additional Features
-7-bit: 128 Resistors with 129 Taps to VSS and VDD
-SPI compatible interface
-Automatic Recall of Potentiometer Wiper Settings Resistance Values: 5k Ohm, 10k Ohm, 50k Ohm, 100k Ohm
-Low Tempco: Absolute (Rheostat): <100 ppm (typ.)
-Ratiometric (Potentiometer): <10 ppm (typ.)
-Low Wiper Resistance: 100 Ohm (typ.)
-Low-Power Operation: 1µA Max Static Current
-Wide Operating Voltage: 1.8V to 5.5V
-Extended Temperature Range: -40°C to +125°C
MCP4131 – Digital Potentiometer – 10K
Potentiometers are incredibly useful, whether you’re controlling the volume on your stereo or the ‘mood lighting’ in your room. The problem with traditional potentiometers is the fact that your microcontroller doesn’t have an easy way to interface with them. Digital potentiometers solve that problem by allowing you to control a voltage splitter with digital signals.
Wire it up just like a potentiometer and use serial signals to ‘turn the knob’. Another handy feature of digital potentiometers is that because they aren’t controlled mechanically, they don’t have a pre-determined sweep profile. In other words, depending on the way you write your code the potentiometer can ‘sweep’ in a linear fashion, a logarithmic fashion, or according to any other profile you like. Digital potentiometers can also be used in conjunction with rotary encoders to consolidate large banks of potentiometers into one ‘smart’ rotary control.
Digital Potentiometer MCP41131 and Arduino
We know the analog potentiometer, is a three-terminal resistor with a sliding contact that forms an adjustable voltage divider. Potentiometers many application such like:
1- Volume controls on audio equipment
2- Control the amplifier gain and offset
3- Transducer displacement transducers
Many other application, but did you want to control the resistance value by Arduino instead of using analog one. Analog potentiometers have some problem with Arduino doesn’t have an easy way to interface with them. The digital potentiometer, give you an ability to adjust the resistance, allowing you to control a voltage splitter with digital signals. This IC using SPI Protocol to communicate with Arduino.
DonLuc1808Mk03
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino UNO – R3
1 x ProtoScrewShield
1 x MCP4131
1 x LED Green
1 x 270 Ohm Resistance
1 x NeoPixel Stick – 8 x 5050 RGB LED
1 x 100K Potentiometer
1 x Black Knob
7 x Jumper Wires 3″ M/M
12 x Jumper Wires 6″ M/M
1 x Full-Size Breadboard
1 x USB Cable A to B
Arduino UNO
MC1 – Digital 13
MC2 – Digital 11
MC3 – Digital 10
LR1 – Digital 3
POT – Analog 1
GND – GND
VIN – +5V
DonLuc1808Mk03p.ino
// ***** Don Luc Electronics *****
// Software Version Information
// Project #7: RGB LCD Shield – MCP4131 – Mk10
// 8-03
// DonLuc1808Mk03p 8-03
// RGB LCD Shield
// MCP4131
// Include Library Code
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
#include <Adafruit_NeoPixel.h>
#include <SPI.h>
// RGB LCD Shield
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// NeoPixels
#define PIN 3 // On digital pin 3
#define NUMPIXELS 8 // NeoPixels NUMPIXELS = 8
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
int red = 0; // Red
int green = 0; // Green
int blue = 0; // Blue
int iNeo = 0; // Neopix
const int iBriPin = A1; // Panel Mount 1K potentiometer Brightneed
int iBri = 0; // Neopix Brightness
int iBriMin = 1023; // Brightneed minimum sensor value
int iBriMax = 0; // Brightneed maximun sensor value
int z = 0; // Value
// MCP4131
int pinCS = 10; // MCP4131
byte address = 0x00; // Address
int i = 0; // Value
void loop()
{
// MCP4131
isMCP4131();
delay(1000);
// Clear
RGBLCDShield.clear();
}
getMCP4131.ino
// MCP4131
void isMCP4131()
{
// NeoPixels
isNUMPIXELSoff(); // isNUMPIXELSoff
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("MCP4131"); // MCP4131
// MCP4131
// Move the potentiometer in one direction
for ( i = 0; i <= 128; i++)
{
isNUMPIXELSoff(); // isNUMPIXELSoff
MCP4131PotWrite(i);
isNUMPIXELS(); // isNUMPIXELS
delay(100);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Level = "); // MCP4131
RGBLCDShield.print(i); // MCP4131
}
delay(2000); // wait a couple seconds
// Now mover potentiometer in other directions
for ( i = 128; i >= 0; i--)
{
isNUMPIXELSoff(); // isNUMPIXELSoff
MCP4131PotWrite(i);
isNUMPIXELS(); // isNUMPIXELS
delay(100);
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print(" ");
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Level = "); // MCP4131
RGBLCDShield.print(i); // MCP4131
}
delay(2000);
}
// MCP4131PotWrite
int MCP4131PotWrite(int value)
{
digitalWrite(pinCS, LOW); // pinCS Off
SPI.transfer(address); // SPI Address
SPI.transfer(value); // SPI Value
digitalWrite(pinCS, HIGH); // pinCS On
}
neopix.ino
// NeoPixels
void neopix()
{
// Brightness
iBri = analogRead(iBriPin);
// iBri apply the calibration to the sensor reading
iBri = map(iBri, iBriMin, iBriMax, 0, 255);
// iBri in case the sensor value is outside the range seen during calibration
iBri = constrain(iBri, 0, 255);
pixels.setBrightness( iBri );
// Pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
pixels.setPixelColor( iNeo, pixels.Color(red,green,blue) );
// This sends the updated pixel color to the hardware
pixels.show();
// Delay for a period of time (in milliseconds)
delay(50);
}
// isNUMPIXELS
void isNUMPIXELS()
{
// Neopix Value
z = ( i / 16 ); // Value
// Neopix Value
switch ( z ) {
case 0:
// NeoPixels
// Green
for(int y=0; y<=0; y++)
{
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 1:
// Green
// NeoPixels
for(int y=0; y<=1; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 2:
// NeoPixels
// Green
for(int y=0; y<=2; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 3:
// NeoPixels
// Green
for(int y=0; y<=2; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Yellow
for(int y=3; y<=3; y++){
red = 255; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 4:
// NeoPixels
// Green
for(int y=0; y<=2; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Yellow
for(int y=3; y<=4; y++){
red = 255; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 5:
// NeoPixels
// Green
for(int y=0; y<=2; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Yellow
for(int y=3; y<=5; y++){
red = 255; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 6:
// NeoPixels
// Green
for(int y=0; y<=2; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Yellow
for(int y=3; y<=5; y++){
red = 255; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Red
for(int y=6; y<=6; y++){
red = 255; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 7:
// NeoPixels
// Green
for(int y=0; y<=2; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Yellow
for(int y=3; y<=5; y++){
red = 255; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Red
for(int y=6; y<=7; y++){
red = 255; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 8:
// NeoPixels
// Green
for(int y=0; y<=2; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Yellow
for(int y=3; y<=5; y++){
red = 255; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Red
for(int y=6; y<=7; y++){
red = 255; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
}
}
// isNUMPIXELSoff
void isNUMPIXELSoff()
{
// Black
// NeoPixels
for(int y=0; y < NUMPIXELS; y++)
{
red = 0; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
}
setup.ino
// Setup
void setup()
{
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.setBacklight(GREEN);
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Don Luc"); // Don luc
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("MCP4131"); // MCP4131
delay(5000);
// Clear
RGBLCDShield.clear();
// NeoPixels
pixels.begin(); // This initializes the NeoPixel library
// NeoPixels
isNUMPIXELSoff(); // isNUMPIXELSoff
// MCP4131
pinMode(pinCS, OUTPUT); // MCP4131 OUTPUT
SPI.begin(); // SPI
}
Don Luc
Project #7: RGB LCD Shield – Bi-Color LED – Mk09
Bi-Color LED
Bi-color LEDs contain two different LED emitters in one case. There are two types of these. One type consists of two dies connected to the same two leads antiparallel to each other. Current flow in one direction emits one color, and current in the opposite direction emits the other color. The other type consists of two dies with separate leads for both dies and another lead for common anode or cathode so that they can be controlled independently. The most common bi-color combination is red/traditional green, however, other available combinations include amber/traditional green, red/pure green, red/blue, and blue/pure green.
Super Bright BiPolar LEDs
Package of 12 super bright Red/Green jumbo T1 3/4 5mm LEDs. These have a diffused frosted lens and 3 long leads. Prime 100% perfect and bright. CODE 7: 100% Prime Parts. Stock # GP55
DonLuc1808Mk02
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino UNO – R3
1 x ProtoScrewShield
3 x Bi-Color LED GP55
3 x 270 Ohm Resistance
3 x 330 Ohm Resistance
3 x Jumper Wires 3″ M/M
7 x Jumper Wires 6″ M/M
1 x Size Breadboard
1 x USB Cable A to B
Arduino UNO
LG3 – Digital 5
LR3 – Digital 4
LG2 – Digital 3
LR2 – Digital 2
LG1 – Digital 1
LR1 – Digital 0
GND – GND
DonLuc1808Mk02p.ino
// ***** Don Luc *****
// Software Version Information
// Project #7: RGB LCD Shield – Bi-Color LED – Mk09
// 8-02
// DonLuc1808Mk02p 8-02
// RGB LCD Shield
// Bi-Color LED
// Include Library Code
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
// RGB LCD Shield
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// Bi-Color LED
int iLR1 = 0; // LED Red 1
int iLG1 = 1; // LED Green 1
int iLR2 = 2; // LED Red 2
int iLG2 = 3; // LED Green 2
int iLR3 = 4; // LED Red 3
int iLG3 = 5; // LED Green 3
void loop()
{
// Bi-Color LED
isBiColor();
delay(1000);
// Clear
RGBLCDShield.clear();
}
getBiColor.ino
// Bi-Color LED
void isBiColor()
{
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Bi-Color LED"); // Bi-Color LED
// Bi-Color LED
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("L1x- L2x- L3x-"); // Bi-Color LED Red
digitalWrite(iLR1, HIGH); // LED Red 1
digitalWrite(iLG1, LOW); // LED Green 1
digitalWrite(iLR2, HIGH); // LED Red 2
digitalWrite(iLG2, LOW); // LED Green 2
digitalWrite(iLR3, HIGH); // LED Red 3
digitalWrite(iLG3, LOW); // LED Green 3
delay( 2000 );
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("L1-x L2-x L3-x"); // Bi-Color LED Green
digitalWrite(iLR1, LOW); // LED Red 1
digitalWrite(iLG1, HIGH); // LED Green 1
digitalWrite(iLR2, LOW); // LED Red 2
digitalWrite(iLG2, HIGH); // LED Green 2
digitalWrite(iLR3, LOW); // LED Red 3
digitalWrite(iLG3, HIGH); // LED Green 3
delay( 2000 );
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("L1xx L2xx L3xx"); // Bi-Color LED Red-Green
digitalWrite(iLR1, HIGH); // LED Red 1
digitalWrite(iLG1, HIGH); // LED Green 1
digitalWrite(iLR2, HIGH); // LED Red 2
digitalWrite(iLG2, HIGH); // LED Green 2
digitalWrite(iLR3, HIGH); // LED Red 3
digitalWrite(iLG3, HIGH); // LED Green 3
delay( 2000 );
}
setup.ino
// Setup
void setup()
{
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.setBacklight(GREEN);
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Don Luc"); // Don luc
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Bi-Color LED"); // Bi-Color LED
delay(5000);
// Clear
RGBLCDShield.clear();
// Bi-Color LED
pinMode(iLR1, OUTPUT); // LED Red 1
pinMode(iLG1, OUTPUT); // LED Green 1
pinMode(iLR2, OUTPUT); // LED Red 2
pinMode(iLG2, OUTPUT); // LED Green 2
pinMode(iLR3, OUTPUT); // LED Red 3
pinMode(iLG3, OUTPUT); // LED Green 3
}
Don Luc
Project #7: RGB LCD Shield – Rotary Switch – Mk08
Rotary Switch – 10 Position
This is a single pole, 10 position rotary switch able to select up to 10 different states in a durable package. Unlike our other rotary switch, this model is much more robust and capable of handling larger currents and voltages.
With a max voltage rating of 125VAC at 0.3A and a dielectric strength of 250VAC for 1 minute this is a serious little rotary switch capable of working with some of your bigger projects. Though this switch requires you to use 11 pins and is not breadboard friendly we do offer a breakout board (found in the Recommended Products section below) to provide easier access to its capabilities.
1 x Rotary Switch – 10 Position
1 x Hex Nut
2 x Washer
Rating: 0.3A/125VAC
Contact Resistance: 50M Ohm max
Insulation Resistance: 100M Ohm @ 500VDC min
Dielectric Strength: 250VAC for 1 minute
Rotation torque: 1.0+0.5KG/cm
Shaft: 3/8″
Rotary Switch Breakout
This is the SparkFun Rotary Switch Breakout, a very simple board designed to easily provide you access to each pin on our 10-position rotary switches. This breakout allows you to easily add a rotary switch to your next project without having to worry about attaching its unique footprint to a custom board or solderless breadboard. All you need to do is solder the 10-position rotary switch into the breakout (using the silkscreen on the board as a guide) and each pin will become available for breadboard or hookup wire compatibility.
Each one of these boards breaks out the common ( C ), 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 positions on the board into 0.1″ spaced pins.
NeoPixel Stick – 8 x 5050 RGB LED
Make your own little LED strip arrangement with this stick of NeoPixel LEDs. We crammed 8 of the tiny 5050 (5mm x 5mm) smart RGB LEDs onto a PCB with mounting holes and a chainable design. Use only one microcontroller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive so the color will be very consistent even if the voltage varies, and no external choke resistors are required making the design slim. Power the whole thing with 5VDC (4-7V works) and you’re ready to rock.
DonLuc1808Mk01
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino UNO – R3
1 x ProtoScrewShield
1 x Rotary Switch – 10 Position
1 x Rotary Switch Breakout
1 x Black Knob
1 x NeoPixel Stick – 8 x 5050 RGB LED
1 x 100K Potentiometer
1 x Black Knob
11 x 1K Ohm Resistance
17 x Jumper Wires 3″ M/M
6 x Jumper Wires 6″ M/M
1 x Size Breadboard
1 x USB Cable A to B
Arduino UNO
NEO – Digital 0
ROT – Analog 1
POT – Analog 0
GND – GND
VIN – +5V
DonLuc1808Mk01p.ino
// ***** Don Luc *****
// Software Version Information
// Project #7: RGB LCD Shield – Rotary Switch – Mk08
// 8-01
// DonLuc1808Mk01p 8-01
// RGB LCD Shield
// Rotary Switch
// Include Library Code
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
#include <Adafruit_NeoPixel.h>
// RGB LCD Shield
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// NeoPixels
#define PIN 0 // On digital pin 3
#define NUMPIXELS 8 // NeoPixels NUMPIXELS = 8
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
int red = 0; // Red
int green = 0; // Green
int blue = 0; // Blue
int iNeo = 0; // Neopix
const int iBriPin = A0; // Panel Mount 1K potentiometer Brightneed
int iBri = 0; // Neopix Brightness
int iBriMin = 1023; // Brightneed minimum sensor value
int iBriMax = 0; // Brightneed maximun sensor value
// Rotary Switch
// Rotary Switch - 10 Position
// Number = 1 => 10
int iRotNum = A1; // Rotary Switch
int iVal = 0; // iVal - Value
int z = 0; // Number
void loop()
{
// Rotary Switch
isRot();
delay(1000);
// Clear
RGBLCDShield.clear();
}
getRot.ino
// Rotary Switch
void isRot()
{
// NeoPixels
for(int y=0; y < NUMPIXELS; y++)
{
// Black
red = 0; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Rotary Switch"); // Rotary Switch
// Rotary Switch
z = analogRead( iRotNum ); // Rotary Switch
iVal = ( z / 100 ); // Rotary Value
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iVal = "); // Rotary Value
RGBLCDShield.print( iVal + 1 );
// Range Value
switch ( iVal ) {
case 0:
// Red
// NeoPixels
for(int y=0; y<NUMPIXELS; y++){
red = 255; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 1:
// Green
// NeoPixels
for(int y=0; y<NUMPIXELS; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 2:
// Blue
// NeoPixels
for(int y=0; y<NUMPIXELS; y++){
red = 0; // Red
green = 0; // Green
blue = 255; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 3:
// White
// NeoPixels
for(int y=0; y<NUMPIXELS; y++){
red = 255; // Red
green = 255; // Green
blue = 255; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 4:
// NeoPixels
// Red
for(int y=0; y<NUMPIXELS; y++){
red = 255; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
delay( 2000 );
// Green
for(int y=0; y<NUMPIXELS; y++){
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
delay( 2000 );
// Blue
for(int y=0; y<NUMPIXELS; y++){
red = 0; // Red
green = 0; // Green
blue = 255; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 5:
// NeoPixels
// Yellow
for(int y=0; y<NUMPIXELS; y++){
red = 255; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 6:
// NeoPixels
// Orange
for(int y=0; y<NUMPIXELS; y++){
red = 255; // Red
green = 102; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 7:
// NeoPixels
// Violet
for(int y=0; y<NUMPIXELS; y++){
red = 204; // Red
green = 102; // Green
blue = 204; // Blue
iNeo = y; // Neopix
neopix();
}
break;
case 8:
// NeoPixels
// Red
red = 255; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = 0; // Neopix
neopix();
delay( 1000 );
// Green
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = 1; // Neopix
neopix();
delay( 1000 );
// Blue
red = 0; // Red
green = 0; // Green
blue = 255; // Blue
iNeo = 2; // Neopix
neopix();
delay( 1000 );
// White
red = 255; // Red
green = 255; // Green
blue = 255; // Blue
iNeo = 3; // Neopix
neopix();
delay( 1000 );
// Pink
red = 255; // Red
green = 153; // Green
blue = 203; // Blue
iNeo = 4; // Neopix
neopix();
delay( 1000 );
// Orange
red = 255; // Red
green = 102; // Green
blue = 0; // Blue
iNeo = 5; // Neopix
neopix();
delay( 1000 );
// Violet
red = 204; // Red
green = 102; // Green
blue = 204; // Blue
iNeo = 6; // Neopix
neopix();
delay( 1000 );
// Yellow
red = 255; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = 7; // Neopix
neopix();
delay( 1000 );
break;
case 9:
// NeoPixels
// Red
red = 255; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = 7; // Neopix
neopix();
delay( 1000 );
// Green
red = 0; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = 6; // Neopix
neopix();
delay( 1000 );
// Blue
red = 0; // Red
green = 0; // Green
blue = 255; // Blue
iNeo = 5; // Neopix
neopix();
delay( 1000 );
// White
red = 255; // Red
green = 255; // Green
blue = 255; // Blue
iNeo = 4; // Neopix
neopix();
delay( 1000 );
// Pink
red = 255; // Red
green = 153; // Green
blue = 203; // Blue
iNeo = 3; // Neopix
neopix();
delay( 1000 );
// Orange
red = 255; // Red
green = 102; // Green
blue = 0; // Blue
iNeo = 2; // Neopix
neopix();
delay( 1000 );
// Violet
red = 204; // Red
green = 102; // Green
blue = 204; // Blue
iNeo = 1; // Neopix
neopix();
delay( 1000 );
// Yellow
red = 255; // Red
green = 255; // Green
blue = 0; // Blue
iNeo = 0; // Neopix
neopix();
delay( 1000 );
break;
}
}
neopix.ino
// NeoPixels
void neopix() {
// Brightness
iBri = analogRead(iBriPin);
// iBri apply the calibration to the sensor reading
iBri = map(iBri, iBriMin, iBriMax, 0, 255);
// iBri in case the sensor value is outside the range seen during calibration
iBri = constrain(iBri, 0, 255);
pixels.setBrightness( iBri );
// Pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
pixels.setPixelColor( iNeo, pixels.Color(red,green,blue) );
// This sends the updated pixel color to the hardware
pixels.show();
// Delay for a period of time (in milliseconds)
delay(50);
}
setup.ino
// Setup
void setup()
{
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.setBacklight(GREEN);
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Don Luc"); // Don luc
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Rotary Switch"); // Rotary Switch
delay(5000);
// Clear
RGBLCDShield.clear();
// NeoPixels
pixels.begin(); // This initializes the NeoPixel library
// NeoPixels
for(int y=0; y < NUMPIXELS; y++)
{
// Black
red = 0; // Red
green = 0; // Green
blue = 0; // Blue
iNeo = y; // Neopix
neopix();
}
}
Don Luc
Project #7: RGB LCD Shield – Line Sensor Breakout – Mk07
Line Sensor Breakout – QRE1113 (Analog)
Description
This version of the QRE1113 breakout board features an easy-to-use analog output, which will vary depending on the amount of IR light reflected back to the sensor. This tiny board is perfect for line sensing applications and can be used in both 3.3V and 5V systems.
The board’s QRE1113 IR reflectance sensor is comprised of two parts – an IR emitting LED and an IR sensitive phototransistor. When you apply power to the VCC and GND pins the IR LED inside the sensor will illuminate. A 100 Ohm resistor is on-board and placed in series with the LED to limit current. A 10k Ohm resistor pulls the output pin high, but when the light from the LED is reflected back onto the phototransistor the output will begin to go lower. The more IR light sensed by the phototransistor, the lower the output voltage of the breakout board.
These sensors are widely used in line following robots – white surfaces reflect much more light than black, so, when directed towards a white surface, the voltage output will be lower than that on a black surface.
The power input and analog output pins are brought out to a 3-pin, 0.1″ pitch header. The board also has a single mounting hole if you want to screw the board onto something.
Features
* 5VDC operating voltage
* 25mA supply current
* Optimal sensing distance: 0.125″ (3mm)
* 0.30 x 0.55 “ (7.62 x 13.97 mm)
Common Reflectance Sensor
The QRE1113 is a common reflectance sensor often used in robotic line followers. The sensor works by shining an IR LED down and seeing how much of that light bounces back using a phototransistor. Because dark colors will bounce back less of the light, the sensor can be used to tell the difference between white and black areas. So an array of these can be used to help a robot determine where a dark line is on the ground so it can follow it. But they can also be used to determine proximity under an inch.
The an analog input on your microcontroller but still need an analog reading of how much light was reflected. It does this by allowing you to charge a capacitor on the board, and then timing how long it takes to discharge. The more light that is reflected, the less time it takes to discharge the capacitor. Hooking the QRE1113 to your Arduino is very simple. It just needs power (5V), ground, and an analog pin.
DonLuc1807Mk11
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino UNO – R3
1 x ProtoScrewShield
1 x Line Sensor Breakout – QRE1113 (Analog)
3 x Jumper Wires 6″ M/M
1 x Half-Size Breadboard
Arduino UNO
CRS – Analog 0
GND – GND
VIN – +5V
DonLuc1807Mk11p.ino
// ***** Don Luc *****
// Software Version Information
// Project #7: RGB LCD Shield – Line Sensor Breakout – Mk07
// 7-11
// DonLuc1807Mk10p 7-11
// RGB LCD Shield
// QRE1113 (Analog)
// include the library code:
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// Seven-Segment Display
int iQRE1113 = A0; // iQRE1113
int iQRE1113Value = 0; // iQRE1113Value
void loop()
{
// QRE1113 (Analog)
isCRS();
delay(2000);
// Clear
RGBLCDShield.clear();
}
getSeven.ino
// Line Sensor Breakout - QRE1113
void isCRS()
{
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("QRE1113 (Analog)"); // Line Sensor Breakout - QRE1113
iQRE1113Value = analogRead(iQRE1113);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iQRE1113 = "); // iQRE1113
RGBLCDShield.print( iQRE1113Value ); // iQRE1113Value
}
setup.ino
// Setup
void setup()
{
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.setBacklight(GREEN);
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Don Luc"); // Don luc
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("QRE1113 (Analog)"); // Seven-Segment Display
delay(5000);
// Clear
RGBLCDShield.clear();
}
Don Luc
Project #7: RGB LCD Shield – Seven-Segment Display – Mk06
Seven-Segment Display
A seven-segment display (SSD), or seven-segment indicator, is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot matrix displays.
Seven-segment displays are widely used in digital clocks, electronic meters, basic calculators, and other electronic devices that display numerical information.
Your basic 7-segment LED. Common anode. Two decimal points, but only the one on the right is wired. Digit height is 0.6″. Overall height is 1″.
Common Cathode
In a common-cathode display, the positive terminal of all the eight LEDs are connected together and then connected to iSeven2 and iSeven8. To turn on an individual segment, you ground one of the pins. The following diagram shows the internal structure of the common-cathode seven-segment display.
The internal structure of both types is nearly the same. The difference is the polarity of the LEDs and common terminal. In a common cathode seven-segment display, all seven LEDs plus a dot LED have the cathodes connected To use this display, we need to connect VIN to make the individual segments light up. The following diagram shows the internal structure of common-cathode seven-segment display.
If your Arduino application only needs to display numbers, consider using a seven-segment display. The severn-segment display has seven LEDs arranged in the shape of number eight. They are easy to use and cost effective. The picture below shows a typical seven-segment display.
DonLuc1807Mk10
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino UNO – R3
1 x ProtoScrewShield
1 x Seven-Segment Display Red
7 x 220 ohm resistor
4 x Jumper Wires 3″ M/M
8 x Jumper Wires 6″ M/M
1 x Half-Size Breadboard
Arduino UNO
7S8 – Digital 8
7S7 – Digital 7
7S6 – Digital 6
7S5 – Digital 5
7S4 – Digital 4
7S3 – Digital 3
7S2 – Digital 2
VIN – +5V
DonLuc1807Mk10p.ino
// ***** Don Luc *****
// Software Version Information
// Project #7: RGB LCD Shield – Seven-Segment Display – Mk06
// 7-10
// DonLuc1807Mk10p 7-10
// RGB LCD Shield
// Seven-Segment Display
// include the library code:
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// Seven-Segment Display
int iSeven2 = 2; // iSeven2
int iSeven3 = 3; // iSeven3
int iSeven4 = 4; // iSeven4
int iSeven5 = 5; // iSeven5
int iSeven6 = 6; // iSeven6
int iSeven7 = 7; // iSeven7
int iSeven8 = 8; // iSeven8
void loop()
{
// Seven-Segment Display
isSeven();
// Clear
RGBLCDShield.clear();
}
getSeven.ino
// Seven-Segment Display
void isSeven()
{
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Seven-Segment"); // Seven-Segment Display
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven2 + "); // iSeven2 +
digitalWrite(iSeven2, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven2 - "); // iSeven2 -
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven3 + "); // iSeven3 +
digitalWrite(iSeven3, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven3 - "); // iSeven3 -
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven4 + "); // iSeven4 +
digitalWrite(iSeven4, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven4 - "); // iSeven4 -
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven5 + "); // iSeven5 +
digitalWrite(iSeven5, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven5 - "); // iSeven5 -
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven6 + "); // iSeven6 +
digitalWrite(iSeven6, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven6 - "); // iSeven6 -
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven7 + "); // iSeven7 +
digitalWrite(iSeven7, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven7 - "); // iSeven7 -
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven8 + "); // iSeven8 +
digitalWrite(iSeven8, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven8 - "); // iSeven8 -
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 0 "); // iSeven 0
digitalWrite(iSeven2, LOW);
digitalWrite(iSeven3, LOW);
digitalWrite(iSeven4, LOW);
digitalWrite(iSeven5, LOW);
digitalWrite(iSeven6, LOW);
digitalWrite(iSeven7, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 1 "); // iSeven 1
digitalWrite(iSeven3, LOW);
digitalWrite(iSeven4, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 2 "); // iSeven 2
digitalWrite(iSeven2, LOW);
digitalWrite(iSeven3, LOW);
digitalWrite(iSeven5, LOW);
digitalWrite(iSeven6, LOW);
digitalWrite(iSeven8, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 3 "); // iSeven 3
digitalWrite(iSeven2, LOW);
digitalWrite(iSeven3, LOW);
digitalWrite(iSeven4, LOW);
digitalWrite(iSeven5, LOW);
digitalWrite(iSeven8, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 4 "); // iSeven 4
digitalWrite(iSeven3, LOW);
digitalWrite(iSeven4, LOW);
digitalWrite(iSeven7, LOW);
digitalWrite(iSeven8, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 5 "); // iSeven 5
digitalWrite(iSeven2, LOW);
digitalWrite(iSeven4, LOW);
digitalWrite(iSeven5, LOW);
digitalWrite(iSeven7, LOW);
digitalWrite(iSeven8, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 6 "); // iSeven 6
digitalWrite(iSeven2, LOW);
digitalWrite(iSeven4, LOW);
digitalWrite(iSeven5, LOW);
digitalWrite(iSeven6, LOW);
digitalWrite(iSeven7, LOW);
digitalWrite(iSeven8, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 7 "); // iSeven 7
digitalWrite(iSeven2, LOW);
digitalWrite(iSeven3, LOW);
digitalWrite(iSeven4, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 8 "); // iSeven 8
digitalWrite(iSeven2, LOW);
digitalWrite(iSeven3, LOW);
digitalWrite(iSeven4, LOW);
digitalWrite(iSeven5, LOW);
digitalWrite(iSeven6, LOW);
digitalWrite(iSeven7, LOW);
digitalWrite(iSeven8, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("iSeven 9 "); // iSeven 9
digitalWrite(iSeven2, LOW);
digitalWrite(iSeven3, LOW);
digitalWrite(iSeven4, LOW);
digitalWrite(iSeven5, LOW);
digitalWrite(iSeven7, LOW);
digitalWrite(iSeven8, LOW);
delay(5000);
// Seven - Off
isSevOff();
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven - Off "); // Seven - Off
delay(2000);
}
// Seven - Off
void isSevOff()
{
// Seven - Off
digitalWrite(iSeven2, HIGH);
digitalWrite(iSeven3, HIGH);
digitalWrite(iSeven4, HIGH);
digitalWrite(iSeven5, HIGH);
digitalWrite(iSeven6, HIGH);
digitalWrite(iSeven7, HIGH);
digitalWrite(iSeven8, HIGH);
}
setup.ino
// Setup
void setup()
{
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.setBacklight(GREEN);
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Don Luc"); // Don luc
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Seven-Segment"); // Seven-Segment Display
delay(5000);
// Clear
RGBLCDShield.clear();
// Seven-Segment Display
pinMode(iSeven2, OUTPUT); // iSeven2
pinMode(iSeven3, OUTPUT); // iSeven3
pinMode(iSeven4, OUTPUT); // iSeven4
pinMode(iSeven5, OUTPUT); // iSeven5
pinMode(iSeven6, OUTPUT); // iSeven6
pinMode(iSeven7, OUTPUT); // iSeven7
pinMode(iSeven8, OUTPUT); // iSeven8
isSevOff(); // Seven - Off
}
Don Luc
Project #7: RGB LCD Shield – LED RGB – Mk05
LED RGB
LED RGB are tri-color LEDs with red, green, and blue emitters, in general using a four-wire connection with one common lead (anode or cathode). These LEDs can have either common positive leads in the case of a common anode LED, or common negative leads in the case of a common cathode LED. Others, however, have only two leads (positive and negative) and have a built-in electronic control unit.
LED RGB (Red-Green-Blue) are actually three LEDs in one! But that doesn’t mean it can only make three colors. Because red, green, and blue are the additive primary colors, you can control the intensity of each to create every color of the rainbow. Most RGB LEDs have four pins: one for each color, and a common pin. On some, the common pin is the anode, and on others, it’s the cathode.
Circuit Schematics (Common Cathode)
The cathode will be connected to the VIN and will be connected through 330 Ohms resistor. We will use PWM for simulating analog output which will provide different voltage levels to the LEDs so we can get the desired colors. We will use PWM for simulating analog output which will provide different voltage levels to the LEDs so we can get the desired colors.
Source Code
I will use the pins number 4, 3 and 2 and I will name them iRed, iGreen and iBlue. In the setup section we need to define them as outputs. At the bottom of the sketch we have this custom made function named setColor() which takes 3 different arguments red, green and blue. These arguments represents the brightness of the LEDs or the duty cycle of the PWM signal which is created using the analogWrite() function. These values can vary from 0 to 255 which represents 100 % duty cycle of the PWM signal or maximum LED brightness.
So now in the loop function we will make our program which will change the color of the LED each 2 second. In order to get red light on the LED we will call the setColor() function and set value of 255 for the iRed argument and 0 for the two others. Respectively we can get the two other basic colors, green and blue.
DonLuc1807Mk09
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino UNO – R3
1 x ProtoScrewShield
1 x LED RGB (NSTM515AS)
1 x 330 ohm resistor
4 x Jumper Wires 6″ M/M
1 x Half-Size Breadboard
Arduino UNO
Red – Digital 4
Gre – Digital 3
Blu – Digital 2
VIN – +5V
DonLuc1807Mk09p.ino
// ***** Don Luc *****
// Software Version Information
// Project #7: RGB LCD Shield – LED RGB – Mk05
// 7-9
// DonLuc1807Mk09p 7-9
// RGB LCD Shield
// LED RGB
// include the library code:
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// LED RGB
#define COMMON_ANODE
int iBlue = 2;
int iGreen = 3;
int iRed = 4;
void loop()
{
// LED RGB
isColor();
delay(500);
// Clear
RGBLCDShield.clear();
}
getColor.ino
// LED RGB
void isColor()
{
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("LED RGB"); // LED RGB
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Red "); // Red
setColor(255, 0, 0); // Red Color
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Green "); // Green
setColor(0, 255, 0); // Green Color
delay(2000);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Blue "); // Blue
setColor(0, 0, 255); // Blue Color
delay(2000);
}
void setColor(int red, int green, int blue)
{
#ifdef COMMON_ANODE
red = 255 - red;
green = 255 - green;
blue = 255 - blue;
#endif
analogWrite(iRed, red);
analogWrite(iGreen, green);
analogWrite(iBlue, blue);
}
setup.ino
// Setup
void setup()
{
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.setBacklight(GREEN);
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Don Luc"); // Don luc
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("LED RGB"); // LED RGB
delay(5000);
// Clear
RGBLCDShield.clear();
// LED RGB
pinMode(iBlue, OUTPUT); // Blue
pinMode(iGreen, OUTPUT); // Green
pinMode(iRed, OUTPUT); // Red
}
Don Luc
Project #7: RGB LCD Shield – IR Emitters and Detectors – Mk04
Infrared Emitters and Detectors
Side-looking Infrared Emitters and IR Detectors. These simple devices operate at 940nm and work well for generic IR systems including remote control and touch-less object sensing. Using a simple ADC on any microcontroller will allow variable readings to be collected from the detector. The emitter is driven up to 50mA with a current limiting resistor as with any LED device. The detect is a NPN transistor that is biased by incoming IR light.
Sold as a pair, with one Emitter and one Detector.
IR Emitter
Connect IR LED using a 270 ohm series resistor to the +5 supply (or to an Arduino pin if you want to switch the source on and off). Current draw is about 11 mA with a 270 ohm resistor. Current runs from anode to cathode. Flat on the case marks the cathode. To determine if the IR LED is the right way around.
IR Detector
A IR Detector is just like a regular transistor except the base lead is disabled or absent and light activates base current. The flat on the case marks the collector, the other lead is the emitter. Connect the collector to one end of a 10K ohm resistor and connect the other end of the resistor to a +5V supply (you can use the +5 pin on the Arduino). Connect the emitter to ground. The voltage should start out at +5V. When pointing the IR Detector, the voltage should drop down to near zero. To interface with the Arduino, make a second connection from the collector to an Arduino pin.
DonLuc1807Mk08
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino UNO – R3
1 x ProtoScrewShield
1 x IR Emitter
1 x IR Detector
1 x 270 ohm resistor
1 x 10k ohm resistor
3 x Jumper Wires 3″ M/M
4 x Jumper Wires 6″ M/M
1 x Half-Size Breadboard
Arduino UNO
Det – Analog A0
Emi – Digital 2
VIN – +5V
GND – GND
DonLuc1807Mk08p.ino
// ***** Don Luc *****
// Software Version Information
// Project #7: RGB LCD Shield – IR Emitters and Detectors – Mk04
// 7-8
// DonLuc1807Mk08p 7-8
// RGB LCD Shield
// IR Emitters and Detectors
// include the library code:
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// IR Emitters and Detectors
int iDet = 2;
int iSense = A0;
int iVal;
void loop()
{
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("IR Emi - Det"); // IR Emitters and Detectors
// IR Emitters and Detectors
iVal = analogRead(iSense);
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
if ( iVal >= 1005 )
{
RGBLCDShield.print("Alarm"); // Alarm
}
else
{
RGBLCDShield.print("No"); // No
}
delay(1000);
// Clear
RGBLCDShield.clear();
}
setup.ino
// Setup
void setup()
{
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.setBacklight(GREEN);
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Don Luc"); // Don luc
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("IR Emi - Det"); // IR Emitters and Detectors
delay(5000);
// Clear
RGBLCDShield.clear();
// IR Emitters and Detectors
pinMode(iDet, OUTPUT);
pinMode(iSense, INPUT);
digitalWrite(iDet,HIGH);
}
Don Luc
Project #7: RGB LCD Shield – PIR Motion Sensor – Mk03
PIR Motion Sensor
This is a simple to use motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the ‘alarm’ pin will go low.
This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V.
The alarm pin is an open collector meaning you will need a pull up resistor on the alarm pin. The open drain setup allows multiple motion sensors to be connected on a single input pin. If any of the motion sensors go off, the input pin will be pulled low.
We’ve finally updated the connector! Gone is the old “odd” connector, now you will find a common 3-pin JST! This makes the PIR Sensor much more accessible for whatever your project may need. Red = Power, White = Ground, and Black = Alarm.
Buzzer
This is a small 12mm round speaker that operates around the audible 2kHz range. You can use these speakers to create simple music or user interfaces.
This is not a true piezoelectric speaker but behaves similarly. Instead of a piezoelectric crystal that vibrates with an electric current, this tiny speaker uses an electromagnet to drive a thin metal sheet. That means you need to use some form of alternating current to get sound. The good news is that this speaker is tuned to respond best with a square wave (e.g. from a microcontroller).
LED
LED Yellow
LED Green
DonLuc1805Mk07
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino UNO – R3
1 x ProtoScrewShield
1 x PIR Motion Sensor
1 x Buzzer
1 x LED Yellow
1 x LED Green
2 x Jumper Wires 2″ M/F
4 x Jumper Wires 3″ M/M
5 x Jumper Wires 6″ M/M
1 x Half-Size Breadboard
Arduino UNO
JST – Digital 6
BUZ – Digital 2
LEY – Digital 1
LEG – Digital 0
VIN – +5V
GND – GND
DonLuc1805Mk07a.ino
// ***** Don Luc *****
// Software Version Information
// Project #7: RGB LCD Shield – PIR Motion Sensor - Mk03
// 5-3.01
// DonLuc1804Mk07 5-3.01
// RGB LCD Shield
// PIR Motion Sensor (JST}
// include the library code:
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// PIR Motion Sensor (JST}
const int buz = 6; // Buzzer
const int MOTION_PIN = 2; // Pin connected to motion detector
const int LED_Yellow = 1; // LED Yellow
const int LED_Green = 0; // LED Green
void loop() {
// PIR Motion Sensor (JST}
isJST();
delay(1000);
// Clear
RGBLCDShield.clear();
}
getJST.ino
void isJST(){
int proximity = digitalRead(MOTION_PIN); // PIR Motion Sensor
if (proximity == LOW) // If the sensor's output goes low, motion is detected
{
// Motion Detected
digitalWrite(buz, HIGH); // Buzzer High
digitalWrite(LED_Yellow, HIGH); // LED Yellow High
digitalWrite(LED_Green, LOW); // LED Green Low
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Motion Detected!"); // Motion Detected!
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Buzzer On - Yel"); // Buzzer On
}
else
{
// Motion Off
digitalWrite(buz, LOW); // Buzzer Low
digitalWrite(LED_Yellow, LOW); // LED Yellow Low
digitalWrite(LED_Green, HIGH); // LED Green High
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Motion Off!"); // Motion Off!
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Buzzer Off - Gr"); // "Buzzer Off
}
}
setup.ino
void setup() {
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.setBacklight(GREEN);
// Display
// Set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print("Don Luc"); // Don luc
// Set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print("Motion Sensor"); // Motion Sensor
delay(5000);
// Clear
RGBLCDShield.clear();
// PIR Motion Sensor (JST}
pinMode(buz, OUTPUT); // Buzzer
pinMode(MOTION_PIN, INPUT_PULLUP); // PIR Motion Sensor
pinMode(LED_Yellow, OUTPUT); // LED Yellow
pinMode(LED_Green, OUTPUT); // LED Green
}
Don Luc
Project #7: RGB LCD Shield – GPS Receiver – Mk02
GPS Receiver
Global Positioning System
The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Air Force. It is a global navigation satellite system that provides geolocation and time information to a GPS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. Obstacles such as mountains and buildings block the relatively weak GPS signals.
The GPS does not require the user to transmit any data, and it operates independently of any telephonic or internet reception, though these technologies can enhance the usefulness of the GPS positioning information. The GPS provides critical positioning capabilities to military, civil, and commercial users around the world. The United States government created the system, maintains it, and makes it freely accessible to anyone with a GPS receiver.
DonLuc1805Mk04
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino UNO – R3
1 x ProtoScrewShield
1 x GPS – GP-20U7
Arduino UNO
Digital 5
GND
3.3V
DonLuc1805Mk04a.ino
// ***** Don Luc *****
// Software Version Information
// 5-4.01
// DonLuc1805Mk04 5-4.01
// RGB LCD Shield
// GPS
// include the library code:
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
#include <TinyGPS.h>
#include <SoftwareSerial.h>
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// GPS
#define gpsRXPIN 5
#define gpsTXPIN 4 //this one is unused and doesnt have a conection
SoftwareSerial tGPS(gpsRXPIN, gpsTXPIN);
TinyGPS gps;
// Global variables and functions are declared here, this allows them to be called anywhere
// within the code and is helpful for passing data out of functions. Dont get in the habit \
// of using these though because as your code gets longer its easy to lose track of where
// you are changing these variables and can lead to a headach when a problem arises.
float TargetLat;
float TargetLon;
int Status = 0;
// Function headers can be placed here so that functions can be placed below your setup
// and loop function for a more logical flow of information.
void getGPS( float* lat, float* lon, int* Status);
void loop() {
RGBLCDShield.clear();
// Receives NEMA data from GPS receiver and Parses Latitude and longitude data
// returns information using pointers including info on stagnant data
// Here we tell it to listen to the tGPS serial object
// then call the function that will recieve and parse the signal from the GPS reciver
tGPS.listen();
getGPS(&TargetLat, &TargetLon, &Status);
// Print status to console to know if you are getting good data or not.
// No Lock = 0, Old Data(>5 sec old) = 1, Good Data = 2
// set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print( "Status:" );
RGBLCDShield.print( Status );
delay(2000);
RGBLCDShield.clear();
// set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print( "Lon: " );
RGBLCDShield.print( TargetLon );
// set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print( "Lat: " );
RGBLCDShield.print( TargetLat );
delay(5000);
}
tGPS.ino
/* GPS Vector Pointer Target
This sketch simiulates any system that has a GPS beacon and has the ability to
broadcast this information for other systems to pick up. This could be a plane/drone
a car/rover or even a solar panel on a space elevator climber. This recieves updating GPS
coordinates and from an attached GPS receiver, parses the incoming NEMA data and
send that information using an Xbee connection to the base station.
*/
void getGPS( float* lat, float* lon, int* Status)
/* This function switches the softserial pin to the one used for GPS then recieves NEMA data from a GPS
receiver which is passed into a TinyGPS Object and parsed using its internal functions for $GPRMC info. This function uses
pointers to pass infomation to pass back to parent function which includes Latitude, longitude,( velocity,
heading) and the status of the GPS signal. Function call where variables can be nammed whatever they want as long as they have &:
getGPS(&latitude, &longitude, &Status);
*/
{
// Initilize pin to receive NEMA (have to do it here because we need to switch between
// software serial pins (if time permits interrupts could be used)
// define local variables
float flat;
float flon;
unsigned long fix_age;
//look for serial data from GPS and loop untill the end of NEMA string
while (tGPS.available())
{
int c = tGPS.read();
if (gps.encode(c));
{}
}
//Pulled parsed data from gps object
gps.f_get_position(&flat, &flon, &fix_age);
*lat = flat;
*lon = flon;
// check if data is relavent
if (fix_age == TinyGPS::GPS_INVALID_AGE)
//No fix detected;
{
*Status = 0;
}
else if (fix_age > 5000)
//Warning: possible stale data!;
{
*Status = 1;
}
else
//Data is current;
{
*Status = 2;
}
}
setup.ino
void setup() {
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.print("Don Luc");
RGBLCDShield.setBacklight(GREEN);
// set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
// print the number of seconds since reset:
RGBLCDShield.print("GPS - GP-20U7");
delay(5000);
// This function is run before the your program begins to loop, here we define the status
// of pins that are used for inputs and outputs
pinMode(gpsRXPIN, INPUT);
// Next communication begins between the three systems along for the baud rate for each
// some of these can handle a larger baud rate but you need to make sure they match what
// they are communicating with
tGPS.begin(9600);
Serial.begin(9600);
}
Don Luc
Project #7: RGB LCD Shield – Mk01
RGB LCD Shield
Project #7 – Mk01
ChronoDot
1 x RGB LCD Shield 16×2 Character Display
1 x Arduino Uno – R3
1 x ProtoScrewShield
1 x ChronoDot
4 x Jumper Wires 3″ M/M
1 x Half-Size Breadboard
A5
A4
GND
3.3V
DonLuc1804Mk07a.ino
// ***** Don Luc *****
// Software Version Information
// 1.03
// DonLuc1804Mk07 1.03
// RGB LCD Shield
// ChronoDot
// include the library code:
#include <Wire.h>
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
#include <RTClib.h>
#include <RTC_DS3231.h>
RTC_DS3231 RTC;
#define SQW_FREQ DS3231_SQW_FREQ_1024 //0b00001000 1024Hz
Adafruit_RGBLCDShield RGBLCDShield = Adafruit_RGBLCDShield();
#define GREEN 0x2
// ChronoDot
char datastr[100];
void loop() {
RGBLCDShield.clear();
timeChrono();
delay(2000);
}
ChronoDot.ino
void setupChrono() {
RTC.begin();
DateTime now = RTC.now();
DateTime compiled = DateTime(__DATE__, __TIME__);
RTC.getControlRegisterData( datastr[0] );
}
void timeChrono() {
DateTime now = RTC.now();
DateTime isNow (now.unixtime() + 6677 * 86400L + 42500);
// set the cursor to column 0, line 0
RGBLCDShield.setCursor(0,0);
RGBLCDShield.print(isNow.year(), DEC);
RGBLCDShield.print('/');
RGBLCDShield.print(isNow.month(), DEC);
RGBLCDShield.print('/');
RGBLCDShield.print(isNow.day(), DEC);
RGBLCDShield.print(' ');
RGBLCDShield.print(' ');
// set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
RGBLCDShield.print(isNow.hour(), DEC);
RGBLCDShield.print(':');
RGBLCDShield.print(isNow.minute(), DEC);
RGBLCDShield.print(':');
RGBLCDShield.print(isNow.second(), DEC);
RGBLCDShield.print(' ');
RGBLCDShield.print(' ');
}
setup.ino
void setup() {
// set up the LCD's number of columns and rows:
RGBLCDShield.begin(16, 2);
RGBLCDShield.print("Don Luc");
RGBLCDShield.setBacklight(GREEN);
// set the cursor to column 0, line 1
RGBLCDShield.setCursor(0, 1);
// print the number of seconds since reset:
RGBLCDShield.print("ChronoDot");
delay(5000);
// ChronoDot
setupChrono();
delay(1500); //wait for the sensor to be ready
}
Don Luc