16 Nov
2013
16 Nov
'13
8:22 p.m.
lör 2013-11-16 klockan 13:23 +0000 skrev luke.leighton:
https://www.sparkfun.com/tutorials/215
in the end i went with this for the router, using an IMD2A for the two transistors.
Personally I haven't used RS232 in ages, only different "TTL" serial variants of 5V or 3.3V.
You don't generally find a computer with a RS232 port today (except mine), so you anyway need some USB dongle, and then you can just as well use a "TTL" USB serial dongle with suitable voltage.
Regards Henrik