Caravan panel that controls the relay. Need help with the basic code

Using Arduino Project Guidance
1

Hey! :slight_smile: Sorry for my bad English :slight_smile:

I plan to make a panel with switches and light emitting diodes. Which is connected on an arduino nano. Then I have to connect the relay on the arduino mega. And use TX / RX to remote it. But where do I start? Anyone have simple code that shows how I can control a relay by and tilt the switch on the arudino nano?

That is to say:

Arduino nano: on / off switch (diode light for on / off status)
TX / RX connect (So I drop so many wires from the panel to the relay)
Arduino mega: Turns on relay on / off

2

Welcome back! We need a bit more information, it is possible to post a diagram of how the system goes together. Then a schematic, not a frizzy thing would be a big help with links to the technical information on the hardware devices.

3

Based on the limited information you supplied just connect the relay to the switch and forgot the Arduino boards.

4

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