I am using the circuit board from **broken link removed** to try to convert a 232 to 485 signal. I am trying to control a stepper motor in a spectrometer. I have it talking one way so far. It will turn the filter wheel so that it is home, but it will never let the computer know that it is home. I have pretty much gone over the board with a fine tooth comb and I don't see anything wrong. This is one of my first projects of this type and any help would be appreciated. Thank you.
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