Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

12V DC Motor controller

  1. Sep 19, 2014 #1
    I have attached a 12v DC electric drill moter to a fishing pole.
    I need a 12v dc motor controler or PWM that will allow me to cut the rpm's down from 550 rpm to about 20 to 100 rpm. less then 20 would work better for bottom fishing.
    I believe a PWM would work but I am not sure as to a schematic I can use to build one.
    Any ideas or input would help. I am not wanting to buy something. I want to build it with my son. it's our project together. thanks for the help. Just F.Y.I we are makeing this so I can go fishing independtly I only have the use of 1 arm.
  2. jcsd
  3. Sep 19, 2014 #2


    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    hi there
    welcome to PF :)

    do some google searching PWM+H-bridge+motor+circuits

    you should come up with lots of ideas :)

  4. Sep 19, 2014 #3
    No will not need a H-bridge It is only going to turn 1 way.
  5. Sep 19, 2014 #4
    What you want can be done very simple and cheap using a 555 IC, a power transistor and a few passive components. It's probably one of the most well-documented hobby projects around since so many start out building exactly that circuit.

    Like davenn suggested, do a Google search for something like "555 pwm motor" - you should find plenty of material.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: 12V DC Motor controller
  1. DC Motor Control (Replies: 5)