I'm new to Anduino but experienced with other micro controllers & are waiting for delivery of my first 2 Anduino units.
My interest is interconnecting Anduino to other RS232 serial devices like a COM port on an old PC or typical USB/232 adaptors but there does not appear to be a definative explanation anywhere on how this should be done. Prime concern is that a 232 device could be working at +/- 12 volts (think IEEE spec even allows 15 volts) but this will no doubt cause grief for a TTL voltage level device if directly connected.
The obvious solution is to use a MAX232 IC as an interface but unless I've overlooked it my web search of this forum have not identified any recommended method supported on this forum. Following is the type of thing I'm expecting:
Hope this is of assistance to others....