USB Serial for Number 6 with the TTL-232R

Connections

TTL-232R pin TTL-232R wire color TTL-232R pin name Atmega32 signal name Atmega32 pin
1 black GND "Ground"
2 brown CTS#
3 red VCC
4 orange TxD "RxD (receive)"
5 yellow RxD "TxD (transmit)"
6 green RTS#

Drivers for mac, linux and win32:

http://www.ftdichip.com/Drivers/VCP.htm

Homepage of the TTL-232R:

http://www.ftdichip.com/Products/EvaluationKits/TTL-232R.htm

Pinout/schematic of the TTL-232R:

http://www.ftdichip.com/Images/ttl232rsch1.jpg

Where to order the TTL-232R:

from Mouser.com About $20