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Newly Updated Circuit Projects:

A4988 Motor Driver Circuit Diagram with IC 555

Last Updated on June 30, 2026 by Swagatam 2 Comments

In this article we now talk about a very simple but very useful stepper motor controller that uses one A4988 driver module and one 555 astable pulse generator. Overview Of The Circuit So we first see the main building blocks. We have one A4988 module that drives any small 2 phase stepper motor. We also […]

Filed Under: Motor Controller Tagged With: 555, A4988, Driver, Motor

Model Train Controller Circuit

Last Updated on June 30, 2026 by Swagatam 9 Comments

model railway train controller compressed

In this post I have explained how to build a simple yet a realistic model train controller circuit, which can be integrated with the rail tracks of an existing motorized train system and used for controlling its speed, acceleration, deceleration with original effects. How the Circuit Works A schematic diagram for the Train Controller can […]

Filed Under: Motor Controller Tagged With: Controller, Model, Train

Adjustable Drill Machine Speed Controller Circuit

Last Updated on June 30, 2026 by Swagatam 16 Comments

drill speed controller

The proposed variable drill speed controller circuit maintains a constant (adjustable) speed over the drill machine motor, regardless of the load. One of the most used power tools is the power drill machine. Despite its innumerable advantages, the power drill has one major setback – constant high speed for many applications. Even when there are […]

Filed Under: Motor Controller Tagged With: Adjustable, Controller, Drill, Machine, Speed

5 Simple DC Motor Speed Controller Circuits Explained

Last Updated on June 30, 2026 by Swagatam 422 Comments

PWM motor control circuit

A circuit which enables a user to linearly control the speed of a connected motor by rotating an attached potentiometer is called a motor speed controller circuit. 5 easy to build speed controller circuits for DC motors are presented here, first one using MOSFET IRF540, second one using IC 555, the third concept with IC […]

Filed Under: Motor Controller Tagged With: Circuits, Controller, DC, Motor, Simple, Speed

Automatic Curtain Open-Close Circuit

Last Updated on June 30, 2026 by Swagatam Leave a Comment

We are happy to share an automatic curtain control circuit kindly provided by Mr. August Peterson. This design helps to open and close curtains by sensing light from the surroundings. It uses an LM393 comparator, a solar panel as a light sensor and a 24V motor. The circuit makes the curtain open in the morning […]

Filed Under: Motor Controller Tagged With: Automatic, Close, Curtain, Open

Line Laser Controlled Motor Alignment Circuit

Last Updated on June 30, 2026 by Swagatam 17 Comments

laser line motor compressed

In this post I have explained a simple line laser controlled motor driver circuit, which works by responding to a precision horizontal laser line, generated from a line laser level device, and automatically adjusts the alignment of the connected tool or the job work with extreme perfection and accuracy. What is Line Laser The line […]

Filed Under: Motor Controller Tagged With: Alignment, Controlled, Laser, Line, Motor

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