Arduino board to computer RS232

Other Hardware 3rd Party Boards
1

Hi Guys,

If I am wiring up a serial connector using PIN 0 and PIN 1 (TX and RX) do I need to do this via a MAX232 or does the Arduino board handle the step voltage for me automatically?

Thanks,

Cameron.

2

cameronasmith:
Hi Guys,

If I am wiring up a serial connector using PIN 0 and PIN 1 (TX and RX) do I need to do this via a MAX232 or does the Arduino board handle the step voltage for me automatically?

Thanks,

Cameron.

The AVR chip is using TTL level voltages on it's serial pins. If you are indeed interfacing with a true RS-232 serial link then you need to utilize the voltage translation and logic inversion that such chips perform.

3

And really, the easiest way is to use one of the modules available on eBay.