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Old 04-28-2007, 06:29 AM
cdvs cdvs is offline
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Join Date: Mar 2007
Location: Oakham, MA
Posts: 197
Originally Posted by Hocrest
By 'a few things' you mean a dropping resistor, voltage divider or other voltage converter to reduce the vehicle's 12V+ to 5V+ for the RS232/TTL converter linked to above or similar premade device?

This seems a quicker and less complicated method to get to the same place as building the interface from scratch.

We could then connect with the audio plug described as follows:

pin 2 (orange/white) transmit (rs232/ttl)
pin 3 (blue/white) receive (rs232/ttl)
pin 5 (red/black) to +12V in (choice of above) to +5v out (rs232/ttl)
pin 9 (green/black) ground (rs232/ttl)

Good show!
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