The Robot - Progress and a VideoDec 02, 2008, 10:01 (0 Talkback[s])
(Other stories by Adam Palmer)
[ Thanks to Adam Palmer for this link. ]
"The motor controllers sometimes dropping/misinterpreting commands during heavy load was solved by a number of different fixes. Firstly, I believe with the USB to TTL converters the data lines are pulled up to 5v with a 4.7K resistor. I added a second 4.7K resistor in parallel to Tx to give the controller more of a chance against interference. I also added various smoothing capacitors, and edited my serial port byte transmit tool to restore the serial port settings graceefully on exit. Oh - I also cut the cables from their default 1m to the 12cm that I needed.. No more dropped commands.
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