Pwm Dc Motor Speed Controller Using 555 Timer

Good thing about 555 timer is that it can be powered with a voltage from 4 5v up to 16v.

Pwm dc motor speed controller using 555 timer.

Building projects using small permanent magnet dc motor for cars robots quads requires a speed controllers to make them work flawlessly. Basic pwm motor speed control using 555 timer ics. So now using the potentiometer we are able to control the speed of the dc motor or the pwm signal produces by the 555 timer ic. Motor speed rpm is directly proportional to the supplied voltage.

555 timer integrated circuit is only used is a stable condition. Many dc motor speed control circuits have been published here but this is the first one using ne555 timer ic. Here we are going to see how to control the speed of the small dc motor using 555 timer. In this part i will talk.

I hope you enjoyed this tutorial and learned something new. I used 12v high torque dc motor which i powered using there 3 7v li ion batteries connected in series which give around 12v. Pwm can be applied to dc motors fans leds etc. By using this circuit we can operate direct current motor by using 555 timer ic integrated circuit.

This is the first part of supposed to be a two part instructable about speed control of a dc motor using 555 timer ics meant to cater those who are still starting to make electronics a hobby and beginners like me in a way. If you have a motor that requires 12v to turn on but the rpm at 12v is too high for your application pwm will allow you to drop the speed of the motor as if it was seeing 3v for instance. This circuit uses similar pwm technique to control motor speed and uses ic 555 to generate pwm signals. For bigger motors i am using 12v power supply with a dc jack standard dc jack the same that is used in arduino uno you can use smaller and bigger voltage within this range but remember about nominal voltage of your motor.

A pretty cool circuit that allows you to control the speed of a dc motor of considerable size. A simple dc motor controller circuit using ne555 is shown here. On this condition with few adjustment in circuit we can used the pulse width modulator.