DIY Electric Car Forums banner

Alternative to Buying a Controller?

9117 Views 16 Replies 9 Participants Last post by  pyroboy1080
I'm looking for a way to make a cheap and easy to build (by theory) controller.

I've poked around on the forums and really liked the idea of the mechanical PWM controller (
HTML:
http://www.diyelectriccar.com/forums/showthread.php/mechanical-pwm-46258.html
) but it looks like there are too many limitations for an EV application.

This sounds like a dumb question to me, but what the heck. Is there any reason why I can't just put a large potentiometer in series with the batteries and the motor and use that as my throttle to control the power output?

Have there been any other feasible attempts to build a simple (DC motor only) controller for EV applications?

My specialty is ME, not EE so try to explain it in a way that will make sense to me! :D
1 - 2 of 2 Posts

· Registered
Joined
·
8 Posts
I'm looking for a way to make a cheap and easy to build (by theory) controller.

I've poked around on the forums and really liked the idea of the mechanical PWM controller (
HTML:
http://www.diyelectriccar.com/forums/showthread.php/mechanical-pwm-46258.html
) but it looks like there are too many limitations for an EV application.

This sounds like a dumb question to me, but what the heck. Is there any reason why I can't just put a large potentiometer in series with the batteries and the motor and use that as my throttle to control the power output?

Have there been any other feasible attempts to build a simple (DC motor only) controller for EV applications?

My specialty is ME, not EE so try to explain it in a way that will make sense to me! :D
I don't see why you couldn't drive your PWM from a circuit?
There are some nice schematics for PWM driver circuits here:
Code:
http://www.picotech.com/applications/pwm_drivers/
Or even perhaps an Arduino, but I'm not exactly sure if the Arduino would be able to work at the amount of current you would need to drive a nice big motor.
You might have to modify them a bit to better suit your needs, but I feel like you could make this happen, it would just take some planning. Also, I would consider a servo for your pedals if you didn't have any better plans for that. Servos have positional awareness, at a very precise level. Also, you'd be one step closer to car automation :p
 
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top