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I have a 12V motor, which I need to control from my Raspberry Pi (through the RaspiRobot Board). However, the RaspiRobot Board gives me only 3.3V for the motor. At the same time, I have a 12V adapter (that came with the motor).

What I now require is, that I power the Motor from the 12V Adapter, and Switch it On/Off from the RaspiRobot Board (with the 3.3V output).

The RaspiRobot Board also lets me Switch the polarity, so it would be better if I could control the direction of the motor in this way too.

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    I don't know the capabilities of the RaspiRobot board. You need to edit the question and include far more information if you want help. – joan Mar 25 at 13:49
  • @joan As in this, the capability of the RaspiRobot Board is just supplying (or not supplying) 3.3V, and change the polarity of the supply. – Mrigank Pawagi Mar 25 at 14:18
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    Seems a waste of money if that is all it does. I repeat you need to edit the question and include any relevant information. – joan Mar 25 at 14:24
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    It seems you need a hardware interface to make this work. A hardware interface is simply some switches (transistors or relays) that take the 3.3V signals from your RPi as control inputs. These control inputs cause the hardware interface to turn a 12V switch ON or OFF - or FORWARD, REVERSE and STOP as the case may be. But @joan is correct - we can't help you with the information you've provided so far. – Seamus Mar 25 at 15:11
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    @MrigankPawagi I don't think so, the RaspiRobot board provides full voltage from the connected battery pack. You should power your system via battery pack connected to RaspiRobot board (not from RPi usb port) The offical docs says: "The RRB3 provides power to the motors direct from the battery pack." Check the corresponding section here: monkmakes.com/rrb3 Use a multimeter and measure voltage on the motor screw terminals. – ijavid Mar 26 at 12:02

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