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This code is updated on July 18, 2017 and tested on one 2DM542 and one TB6560 driver.
It has following features:
1. One relay is used to connect SMPS to loads (LASER and motors). This relay is driven by Arduino board.
digitalWrite(13, LOW);
2. Second relay is turned on automatically when SMPS is found to be ON.
if(analogRead(smps)>=300)
3. Second relay is driven by the output of step down module (4v). Earlier it was driven by Arduino board.
4. "Start Calibrate" does not switch ON second relay.
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