Orange DIY LM555 Based Motor Speed Controller


Out of stock

Approx Restocking Date: 25 to 30 Days
SKU: 1174664
  1. Input Voltage ( V ): 12 V DC
  2. Operating Current ( A ): 100mA 
  3. IC: NE555E
  4. Transistor: TIP122 


(Including GST)

Out of stock

Free Delivery above ₹499
Free Delivery
above ₹499
Cash On delivery
Cash on Delivery*

Didn’t find what you are looking for?

You must register to use the waitlist feature. Please login or create an account
Brand: Orange
Category: Orange Electronic Hobby kits

We use DC Motors in many systems in our day to day life. For example, CPU fans, fume extinguishers, toy cars etc. are all DC Motors that are operated by DC power supply. Most of the time we will have to adjust the speed of the motors as per our requirement.

A CPU Fan, for example, must be operated at high speed when the CPU is performing heavy tasks like games or video editing. But for normal usage like editing documents, the speed of the fan can be reduced. Although some systems have an automatic adjustment system for fan speed, not all systems possess this functionality. So, we will have to adjust the speed of the DC Motor ourselves occasionally.

In this circuit, the DC motor is operated by a 555 integrated circuit. TheIC 555 in this circuit is being operated in astable mode, which produces continuous HIGH and LOW pulses. In this mode, the 555 IC can be used as a pulse width modulator with a few small adjustments to the circuit. The frequency of operation of the circuit is provided by the passive parameters of resistances and capacitors attached to it.


  1. Orange Untitled 4Pin 1 of 555 is connected to GND. Pins 8 and 4 are connected to +V
  2. Pins 6 and 2 are short and a 100nF Capacitor is connected between Pin
    2 and GND. The wiper pin of the POT is connected to Pin 3 of 555. Two
    Schottky diodes (1N5819) are connected to the other two pins of the
    POT as shown in the circuit diagram.
  3. The common point of the diodes is connected to Pin 2. Pin 7 is pulled
    high with the help of a 10KΩ Resistor. The Gate terminal of the MOSFET
    is connected to Pin 7 of 555. The motor is connected between +12V
    Supply and Drain of MOSFET while the Source of MOSFET is connected
    to GND.


  1. To control the speed of the motor efficiently.

Package Include:

1 x Orange DIY LM555 Based Motor Speed Controller

SKU: 1174664 Category:
Input Supply Voltage (VDC)


Operating Current (A):


IC Chip




Shipping Weight 0.08 kg
Shipping Dimensions 13 × 9 × 4 cm

Based on 0 reviews

0.0 overall

Be the first to review “Orange DIY LM555 Based Motor Speed Controller”

There are no reviews yet.


Questions and answers of the customers

There are no questions yet. Be the first to ask a question about this product.

Only registered users are eligible to enter questions
Country Of Origin: India