I would be grateful for some advice. Recently, I've read some articles about using a phone data cable to connect *duino's to the serial port of a PC. As I have a board without USB and a lot of old phone data cables, I thought hacking an existing cable could be a relatively cheap solution.
From what I gather, something to do with voltage levels, you cannot connect an Arduino to RS232 directly -- you need either electronics to regulate that, or an IC like the "MAX232". So... I started checking my old data cables for this chip, or a similar one.