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I have 2 og those 12v motor and a 12v battery http://www.enigmaindustries.com/Motors/Bosch_EV_Warrior.htm

I want to know what s the best solution to controle the motor with an arduino Uno. Is the motor controller need to be 100amp proof?

I though of a 100amp transisor connected to the pwm pin of arduino, an then, it will controlle the motor with pwm.

Is voltage regulator better than pwm?

Thanks a lot, Bernard

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  • \$\begingroup\$ Heh--Good luck finding a 100A transistor that can be connected directly to an Arduino. They tend to be VERY expensive and usually cannot be controlled directly by an Arduino. You'll probably need an in-between transistor that the Arduino can drive, and use that transistor to switch the Base/Gate of the high-current transistor. IGBTs are often used for motor drive applications, you may want to look into those. \$\endgroup\$ – DerStrom8 May 20 '15 at 13:53
  • \$\begingroup\$ yeah I will try with mosfet, it may work better \$\endgroup\$ – Bernard Meunier May 20 '15 at 23:04
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The motor in the link is of different kind. I am not sure about it weather it is used as a generator or motor. Please specify your application. It is preferable that you first check the basics. you have 12 v motor and 12v battery, however the current capacity of the battery is not specified(A/H)

In the question you have asked about how to control a motor from Arduino. Assuming that the motor is a simple dc motor, you can simply control it by interfacing a external H-bridge driver (IC) to your Arduino UNO or you can simply use Arduino Leonardo-compatible with L298P motor controller which has the same driver on board.

PWM is easier to control in a digital environment, the efficiency of PWM is way better than voltage regulation.

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