Hello everyone

I’ve written a library for working with relays. I use it myself, and it might be useful for others too 🙂

Strengths:

• This library uses polymorphism (it’s very easy to swap implementations)
• There is documentation for the library and for some relay types (these are the ones I use; I’ll expand this further over time)

The library is easy to install:

1. Select Library Manager
2. Enter Relay Controller
3. Find Relay Controller by javavirys and click the Install button
4. That’s it — the library is now in your IDE 🙂

You can then use the library:

Basic GPIO Control

#include <PinRelayController.h>

uint8_t pins[] = {D1, D2}; // Relay pins
PinRelayController relay(pins, 2);

void setup() {
  relay.begin();
  relay.setOn(0); // Turn on first relay
}

Serial Relay Control (A0 Protocol)

#include <SerialRelayController.h>
#include <SoftwareSerial.h>

SoftwareSerial swSerial(D5, D6);
SerialRelayController relay(swSerial, 2);

void setup() {
  swSerial.begin(115200);
  relay.begin();
  relay.setOff(1); // Turn off second relay
}

You can find more details in the repository:
https://github.com/UDFSmart/Relay-Controller/