How can I build a 12V DC motor controller for my fishing pole?

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Discussion Overview

The discussion revolves around building a 12V DC motor controller for a fishing pole, specifically focusing on reducing the motor's RPM from 550 to a range of 20 to 100 RPM. The context includes DIY approaches and the desire to create a project with a child.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant describes the setup of a 12V DC electric drill motor attached to a fishing pole and expresses the need for a motor controller or PWM to reduce RPMs.
  • Another participant suggests searching for PWM and H-bridge motor circuits online, implying that there are many resources available.
  • A different participant argues that an H-bridge is unnecessary since the motor will only operate in one direction.
  • One participant proposes using a 555 IC, a power transistor, and passive components as a simple and cost-effective solution, noting that this is a common hobby project.

Areas of Agreement / Disagreement

Participants express differing views on the necessity of an H-bridge, with some suggesting it is not needed for a single-direction motor. There is no consensus on a specific schematic or design approach, as various methods are proposed.

Contextual Notes

The discussion lacks detailed schematics or specific component values, and the feasibility of the proposed solutions may depend on the user's familiarity with electronics and circuit design.

Who May Find This Useful

Individuals interested in DIY electronics, hobbyists looking to build motor controllers, and those seeking to engage in projects with children may find this discussion relevant.

yrliner
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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.
 
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hi there
welcome to PF :)

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

you should come up with lots of ideas :)

cheers
Dave
 
No will not need a H-bridge It is only going to turn 1 way.
 
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.
 

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