I see two possible improvements:- let the visual basic program specify an arbitrary angle instead of just a character which maps to a predefined set of angles;- have a "set" command which the VB program would use to make the motor run to a specified angle, and a "get" which would return the angle of the last "set" command (in simpler words: "set" motor position, "get" current motor position).Just my 2 cents...
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