Can I do serial communication on the p6 connector of the trainer?

[datbates]

Just wondered if I can leave the trainer on to do serial communication.   I assume the answer is yes, but I don't want to blow anything out ;-).  I have built a little board that should attach to one of the pin groups and pull power from the Prop-1 (actually 2 but I figured this applies to both) and feed the serial signal to the signal input.  This should be all right right?

IE:

white serial signal
red    +5 volts of my circuit
black  ground of my circuit
On the trainer top connector.

Thanks!

         

[JonnyMac]

You can if you're VERY careful.  Don't press the button while using SEROUT on P6 with the trainer installed (this will cause a short between P6.W and P6.B).  Yes, there is a resistor that protects the BS1 I/O pin, but you don't want to take a chance.  Also, you'll need to remove pin 2 of the ULN2803 (or pin 1 of the ULN2003) so that the ULN doesn't interfere with SEROUT.  See this thread for an illustration:

http://www.efx-tek.com/php/smf/index.php?topic=130.0