Hi,
happy customer here, worked thru the embedded tutorials no problem.
Now I have ordered, received, assembled, and tested the RS-232 Shifter Board Kit (thru-hole), but am having some troubles…
it works fine in loopback mode, just as expected.
However, when connected in place of he MAX232 chip in the embedded tutorials example, it doesn’t work. I’ve tried switching the tx/rx connections and have traced all the leads with a continuity meter, comparing to schematics, all seems good. I have tried connecting to two different computers with same (fail) results. The soldering job is reasonable, I have moderate experience soldering and feel its certainly a passable job. I have a working knowledge of analog circuits, I see how it is supposed to wrok and see nothing obviously wrong with my assembled kit.
Where can I turn to help with further troubleshooting of the shifter board? Is this the proper forum or is another better suited? Should I just order a 2nd one and see if it magically works better? I do not have access to an o-scope.
Thanks in advance, for a great site, easy ordering, and fun so far, just need a little directon on what to do when something doesn’t work.
Thanks,
Eric.