Transferring ASCII from an Arduino to RS-232 DE-9

Projects General Guidance
1

Hi there,

I need to set up my Arduino so that it can send some ASCII through an RS-232 DE-9 (9 pin serial port) to a somewhere. I was just wondering in general what the easiest way of doing this would be and if someone could tell me what the wiring is that would be great.

Cheers.

2

If it's true RS232 (and a D9 suggests that it is) you will need something to handle the different voltages it uses. Google MAX232.

3

Multiplier7:
Hi there,

I need to set up my Arduino so that it can send some ASCII through an RS-232 DE-9 (9 pin serial port) to a somewhere. I was just wondering in general what the easiest way of doing this would be and if someone could tell me what the wiring is that would be great.

Cheers.

If you have a Uno and want a ready-made solution : Arduino RS232 Shield - DFRobot

4

Keep in mind that you only have a single hardware serial,port on an UNO, while software serial may be an option, I’d much rather use a MEGA with multiple hardware ports.