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Up and down counter module example for 2.3" display
// connect 9V to the counter module
// Connect 5V of Arduino to 5V of module
// Connect GND of Arduino to GND of module
// Connect pin 13 of Arduino to pin 5 of module
// Connect pin 12 of Arduino to pin 4 of module
// Connect pin 11 of Arduino to pin 14 of module
// other connections
//Use this example: https://www.arduino.cc/en/tutorial/debounce and make two exactly same circuits, connect one switch to pin 2 and other to pin 3 of Arduino
const int UpCountPin = 2;
const int UpPulsePin = 13;
const int resetpin=11;
const int DownCountPin = 3;
const int DownPulsePin = 12;
int UpCountState = HIGH;
int buttonStateUp;
int lastbuttonStateUp = LOW;
int DownCountState = HIGH;
int buttonStateDown;
int lastbuttonStateDown = LOW;
unsigned long lastDebounceTimeforUp = 0;
unsigned long debounceDelayforUp = 50;
unsigned long lastDebounceTimeforDown = 0;
unsigned long debounceDelayforDown = 50;
void setup() {
pinMode(UpCountPin, INPUT);
pinMode(UpPulsePin, OUTPUT);
pinMode(resetpin,OUTPUT);
pinMode(DownCountPin, INPUT);
pinMode(DownPulsePin, OUTPUT);
// set initial LED state
digitalWrite(UpPulsePin, UpCountState);
digitalWrite(DownPulsePin, DownCountState);
digitalWrite(resetpin, HIGH);
delay(100);
digitalWrite(resetpin, LOW);
}
void loop() {
int readingUp = digitalRead(UpCountPin);
int readingDown = digitalRead(DownCountPin);
if (readingUp != lastbuttonStateUp) {
// reset the debouncing timer
lastDebounceTimeforUp = millis();
}
if (readingDown != lastbuttonStateDown) {
// reset the debouncing timer
lastDebounceTimeforDown = millis();
}
if ((millis() - lastDebounceTimeforUp) > debounceDelayforUp) {
if (readingUp != buttonStateUp) {
buttonStateUp = readingUp;
if (buttonStateUp == HIGH) {
UpCountState = !UpCountState;
}
}
}
if ((millis() - lastDebounceTimeforDown) > debounceDelayforDown) {
if (readingDown != buttonStateDown) {
buttonStateDown = readingDown;
if (buttonStateDown == HIGH) {
DownCountState = !DownCountState;
}
}
}
digitalWrite(UpPulsePin, UpCountState);
digitalWrite(DownPulsePin, DownCountState);
lastbuttonStateUp = readingUp;
lastbuttonStateDown = readingDown;
}
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@buildcircuit buildcircuit commented Jul 18, 2020

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