36mm Encoder Motor to Arduino

#1

Currently, I have 2 36mm DC encoder motors from makeblock. I have wired this to a high power motor encoder driver also by makeblock, this is connected to an arduino uno. The wiring is as such:

UNO->Driver
A4 -> SDA
A5 -> SCL
Vin -> 5v
GND -> GND

For some reason the motors do not turn when testing the makeblock library examples. I have heard a humming noise from one of the motors once, but I’ve attempted hundreds of times. The motors also turn manually, with great force. The driver is connected to a 11.1V Li-Po Battery, and the arduino is connected to the computer.

If someone could suggest possible issues or things to consider when reattempting I would be very grateful. The biggest roadblock in my project is getting these motors to turn.

Thanks!

#2

Is the arduino uno powered with battery or external power supply?
I think it may not get enough power to send the communication signal to the drivers if it only gets power from USB connection to computer.

If the motors still don’t move when power the mainboard properly, you may need double check the connection (according to the electronic circuit) and the program (most of makeblock example program was written base on our Me Orion board, if use the Arduino uno board, you may need to modify the program according to your connection).

#3