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Topic: motor shield r3 output in series (Read 947 times) previous topic - next topic


dear all,

i'm using the arduino motor shield r3 in order to controll a 24v DC motor (http://en.manu-systems.com/EMG49.shtml)
as I can understand from the motor shield datasheet (http://arduino.cc/en/Main/ArduinoMotorShieldR3) is not allowed to control more than 18V motor.

Is it possible to connect in series the 2 output of the shield (12v+12v) to obtain 24v?

thank you



No because both shields need a common ground for the logic signals.

Even if that were true it would be problematical to say the least since these are H-bridges and output polarity reverses - separate floating power supplies into the shields would be needed - all seems like a can of worms.

The absolute maximum is quoted as 18V for one of the shields: a different shield/controller is going to be the answer for 24V operation.
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]


thank you MarkT,

I see, i found this shield in the forum (http://www.robotshop.com/eu/arduino-compatible-mega-motor-shield-1a-5-28v-2.html).
this seams to be the solution.

thank you again


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