maemo.org - Talk - View Single Post - Trying to come up with a serial port...

dewzenol	2007-08-14 , 07:51
Posts: 26 \| Thanked: 0 times \| Joined on Aug 2007	#8

For that matter, you are dealing with a serial port, so don't you have 5v right there??
http://pinouts.ru/SerialPorts/Serial9_pinout.shtml

PC serial mouse uses typically DTR and RTS lines for generating +5V power for microcontroller circuit in the mouse.

Batteries not necessary!