DMX on Arduino Mega 2560

Projects Networking, Protocols, and Devices
1

Hello,

I am currently working on a project involving both the arduino 2560 and DMX. I am wanting to obviously use the arduino to generate a dmx signal. I am having problems getting the lights to do much of anything. I am basing this off of the fritzing diagram. Can anyone verify the circuit to use and which pin the input on the 485 chip needs to be plugged into on the arduino 2560. From my understanding tx 0 is used when programming the arduino so this pin should be avoided. Can i use tx 1 or tx2 or tx3? If so how would i go about this?
I

2

am basing this off of the fritzing diagram.

The fritzing diagram I saw last was for wiring an LED and a switch to the Arduino. No wonder that diagram doesn't work for DMX.

Can i use tx 1 or tx2 or tx3?

For what? For talking to the DMX device? Yes.

If so how would i go about this?

Use Serial1, Serial2, or Serial3 in place of Serial.