[Solved] MD30C ground connection
Posted: Mon Apr 09, 2018 10:26 pm
Hello,
I read on a post here that that grounds are commoned on the board MD30C; on the R2 I just received, it seems (according to my ohmmeter) that there is a diode between the minus power pin and the Gnd pin of the ext PWM connector (JP6 being on ext position); the cathode seems to be on the power side, anode on the PWM connector side. So my questions are:
1/ how is the Gnd interconnection made, would you have a sketch of it ?
2/ Can you confirm that there is a diode ? If yes, which type is it ?
2/ I'd like to put a 0.05R resistor in order to measure the current in the motor and prevent from overload ; this resistor should be seen by an analog port of the MCU (PIC18F), referenced to ground. Where do you suggest I should place it in the power circuit ? I'm confused with this diode between the 2 Ground...
Thanks a lot in advance,
Gerard
I read on a post here that that grounds are commoned on the board MD30C; on the R2 I just received, it seems (according to my ohmmeter) that there is a diode between the minus power pin and the Gnd pin of the ext PWM connector (JP6 being on ext position); the cathode seems to be on the power side, anode on the PWM connector side. So my questions are:
1/ how is the Gnd interconnection made, would you have a sketch of it ?
2/ Can you confirm that there is a diode ? If yes, which type is it ?
2/ I'd like to put a 0.05R resistor in order to measure the current in the motor and prevent from overload ; this resistor should be seen by an analog port of the MCU (PIC18F), referenced to ground. Where do you suggest I should place it in the power circuit ? I'm confused with this diode between the 2 Ground...
Thanks a lot in advance,
Gerard