I have a question for my project... I need to add 4 (bi-directinal) RS-232 connections.
What boards (or shields) is best to use for this? (programming wise I use Python)
and is it possible to 'program' other ports (like the I2C connection) to act as a serial TX/RX port?
I know that I than need to lower voltages (RS-232 > TTL level)
If there are any people that know of schematics (online) it would also be a huge plus.
With kind regards,
from the Netherlands