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Arduino for Motorised Wheelchair

bobbyppaul

How effectively can we use Arduino for Motorised Wheelchair ?

I am a faculty of Mechanical Engineering and I am in the process of developing a Low Cost Motorised Wheelchair.

I heard from someone that Arduino is not reliable and it will burn off easily is it true ?

Can anyone help me developing a circuit which is reliable and consistent ?

I did some experimentation with Arduino and Relays we had jerks in wheelchair as it was just helping to switch on and off and Relay was burning off frequently.

I am trying to use motor Driver L293D to control the motors.

Can I use 'map' function to link Joystick input and motor output. Is it the best way to do it ?

Or is their any other alternatives.

 

Motor Specifications

 

Two Motion tech 24 Volt, 320 Watts, 3 Amps DC motors are used to run the wheelchair.

 

Looking forward for some helps.

 

Thanks in advance

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  • Hi Bobby,

    You might want to check the specs on your motor before you look for a larger H-Bridge. The 24 Volts 3 Amp specification would only yield 72 Watts. If the motor in fact can deliver 320 Watts at 24 volts you may be looking at 13 to 14 Amps. As far as the dependability of the Arduino I have found it to be very reliable when properly used and engineered into the application. Some of the aftermarket inexpensive knockoffs may be a little questionable. Relays may not be the best way to go as they deliver all or nothing of the power that you need. Ideally the power to your motors should be control by technique called Pulse Width Modulation PWM which allows you to gradually increase and decrease power to the motor and thus eliminate high acceleration starts and stops.

    John

  • in reply to jw0752

    Thank you very much. This gives me more clarity.

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