Wednesday, January 27, 2016

How to Build 555 Based DC Motor Speed Controller

ElcoHow. - Do you want to build by your self motor control and driver using 555 IC in this time? In here we will give you one project to build 555 Based DC Motor Speed Controller like this project.

Beside we will give you circuit 555 Based DC Motor Speed Controller based on 555 IC, Diodes, Transistor and also component used, in here we also will give you global description about this circuit and also skill needed and other.

Electronic Circuit
Component List
  1. 555 IC
  2. DC Motor
  3. Resistors
  4. Diodes
  5. Capacitors
  6. LEDs
  7. TIP122
  8. Variable Resistor

Electronic circuit like in Figure 1 above is 555 Based DC Motor Speed Controller circuit. According Electronics-Lab site that published this 555 DC Motor Speed Controller project will control the speed of a DC motor connected to it.  This project is built using the popular 555 timer IC.

  • Power supply input 5-12V DC
  • Motor Load Up to 1 to 2Amps
  • Onboard preset to vary Duty Cycle from 10% to 95% @ 120 Hz
  • Ideal for mini drill and robotics application
  • Transistor based output drive with heat-sink
  • Diode protection for motor surge
  • Power-On LED indicator
  • Screw terminal connector for easy power supply input and output-Motor connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 47 mm x 56 mm

To build 555 Based DC Motor Speed Controller, you need some skill as follow:
  1. Basic soldering.
  2. Read a basic schematic.
  3. Assembling electronic component
  4. Design PCB layout
  5. Testing voltage and current
Tools and Material

In this project, you must prepare some tools and material that used as the supporting to build 555 Based DC Motor Speed Controller as follow:
  1. Tools: soldering iron, cutter, multitester, and Project Board.
  2. Material: Tin, PCB

When you want to realize this 555 Based DC Motor Speed Controller circuit into real application, you can build it as like design PCB layout using good software as like: PCB Wizard. 
How to do?

For more information about this project step-by-step you can follow this project of How to Build 555 Based DC Motor Speed Controller you can read below.
  1. Prepare electronic component listed, material and tools needed.
  2. Firstly you can try this circuit using project board tool.
  3. After you surely with this circuit work properly, now you can begin with design PCB using PCB Wizard.
  4. After designed, now you can make the PCB layout to put these components. You can make PCB by your self or order it according your PCB layout design.
  5. Put all component to the PCB layout and soldering all component.
  6. Now you can test, input and output voltage and current from this circuit. Please read caution below.
  7. Please see more about listing program and other of this 555 Based DC Motor Speed Controller here.
  • Do not put all semiconductor component like IC, Diode, reverse.
  • Using heat sink for component that can make heat in here like transistor TIP122.

Thank you for your coming here in site, we hope the article above will help you to know more about your eletronic circuit design software and other. Please comment here when you want to share and other. Thank you.


  1. hola para poder hacerlo de 6 u 8 amperes... que tendria que modificar... ?