Simple IR Remote for Motorized Alps Pot directly using Arduino.

[jwdevos]

Thanks to everyone who posted in this topic, the idea suits my building aspirations so I tried it out using an Arduino Nano Every. It works perfectly. I have an Alps blue motorised pot. My code is based on the IRremote library demo's, the first two code posts in this topic, and my own inspiration. In case anybody finds it helpful, you can reference my implementation in GitHub:

GitHub - jwdevos/arduino-remote-volume-control: This project enables you to use an Arduino and an IR remote to control a motorised potentiometer, as typically found in stereo amplifiers with remote volume control.

This project enables you to use an Arduino and an IR remote to control a motorised potentiometer, as typically found in stereo amplifiers with remote volume control. - jwdevos/arduino-remote-volume...

github.com

 

[Jaaptina]

I’ve used the L298N to drive an Alps motorised volume contol. The motor rotates intermittently. This eliminates the risk of going to fast to loud. I used part of the code from “Simple IR Remote for Motorized Alps pot for Arduino”. This is the code:

#include

#define enA 9
#define UP_PIN_1 2
#define DOWN_PIN_1 7
int IR_RECEIVE_PIN = 12;
int volDelay = 15; // motor running time after short press
int pressDelay = 200; // to buffer the time between two repeat signals
int press = 0; // no press, short press, long press: 0, 1, 2
int Up = 0; // Rotation Up, Down: 1, 2

unsigned long lastPressTime = 0;
unsigned long lastRepeatTime = 0;
const unsigned long upCodes[] = {0xF50ACA35, 0xBD42CA35, 0xFE01CA35, 0xFD02CA35};
const unsigned long downCodes[] = {0xF609CA35, 0xBE41CA35, 0xFF00CA35, 0xFA05CA35};

void setup() {
Serial.begin(9600);
IrReceiver.begin(IR_RECEIVE_PIN);
pinMode(enA, OUTPUT);
pinMode(UP_PIN_1, OUTPUT);
pinMode(DOWN_PIN_1, OUTPUT);
lastPressTime = millis();
Serial.println(“Volume control started”);
motorOff();
}

void loop() {
if (IrReceiver.decode()) { // signal received
unsigned long currentIRValue = IrReceiver.decodedIRData.decodedRawData;
Serial.print(“Ontvangen IR-code: 0x”);
Serial.println(IrReceiver.decodedIRData.decodedRawData, HEX);
bool commandProcessed = false; // IR signal received

// Check for “up” codes
for (int i = 0; i < 4; i++) {
if (currentIRValue == upCodes) {
motorUp();
lastPressTime = millis();
commandProcessed = true;
press = 1;
Up = 1;
break;
}
}

// Check for "down" codes
if (!commandProcessed) {
for (int i = 0; i = volDelay)) {
motorOff();
press = 0;
}

// If next signal is repeat; motor ON again
else if (press == 2 && (millis() – lastRepeatTime < pressDelay)) {
if (Up == 1){
motorUp();
}
if(Up == 2) {
motorDown();
}
press = 1; // stops motor until next repeat
}

// Stop the motor if unknown signal is received
else if (press == 0) {
press = 0;
lastPressTime = millis();
}
}

// Functies voor motorbesturing
void motorUp() {
digitalWrite(UP_PIN_1, HIGH);
digitalWrite(DOWN_PIN_1, LOW);
analogWrite(enA, 255); // Maximale snelheid (PWM)
Serial.println("Motor runs UP");
}

void motorDown() {
digitalWrite(UP_PIN_1, LOW);
digitalWrite(DOWN_PIN_1, HIGH);
analogWrite(enA, 255); // Maximale snelheid (PWM)
Serial.println("Motor runs DOWN");
}

void motorOff() {
digitalWrite(UP_PIN_1, LOW);
digitalWrite(DOWN_PIN_1, LOW);
analogWrite(enA, 0);
Serial.println("Motor OFF");
}