June 12, 2009
about 6 years ago
MotiveForce: Before purchasing this part you need to know if you have a condition called UART dyslexia. This is a neurological disorder that will render you incapable of properly wireing this device no matter how my times you triple check the the wiring.
Here’s a hint that works for me. It’s fairly easy to remember that for basic serial comms, the numbers to know are 2, 3 and 5. Two and three are data, five is ground. The problem is always to keep track of which data line is which….and on the corner of whiteboards around the office, I write “PC talks on Three!"
Once you know that, everything else falls into place.
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