Propeller Proto Board wiring question

SSteve

Am I correct in interpreting the PPB schematic that the holes I've circled are connected through 10k resistors to 3.3V? (My hardware skills are effectively non-existent.)

JLocke

It looks like you are supposed to install 100-ohm resistors in the left-most two holes (the ones you have circled and the holes immediately to the right of those). I'm basing this on the instructions on the top of page 4 of the Propeller Proto Board Manual. It appears these are only used if you are utilizing the PS/2 option(s); they are marked 'Optional' on the schematic.

So I guess to answer your question, yes, one of those holes is pulled-up to 3.3V through 10K. I don't have a Proto Board in front of me to verify that it is the left-most hole that is pulled-up, but you should be able to trace it out on the board or with a voltmeter. The other side of the pair will connect back to pins P24-P27 on the propeller.

Publison

Yes, the 4 left hand holes are connections to the Mouse/Keyboard Pullups. They are circled in the attachment.

SSteve wrote: »

Am I correct in interpreting the PPB schematic that the holes I've circled are connected through 10k resistors to 3.3V? (My hardware skills are effectively non-existent.)

SSteve

That's great. My project has a couple buttons and those 10k resistors will be perfect for the pullups. Thanks for your help.