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Automatic Door Controller Circuit Diagram using a Single Push-Button

Last Updated on June 30, 2026 by Swagatam 17 Comments

door controller circuit

This door controller circuit works in this way: Initially the door is in the closed state. When a push button is pressed, the door begins opening until it reaches the end of the course. When it reaches the end, it automatically reverses its direction and now the door begins closing. It keeps moving until it […]

Filed Under: Motor Controller Tagged With: Automatic, Button, Controller, Door, Push, Single

LM35 IC Temperature Controller Circuit with Push Button

Last Updated on February 23, 2024 by Swagatam 250 Comments

LM35 temperture controller circuit diagram with push button

In this post I have explained a simple yet very accurate temperature controller circuit using IC LM35, featuring an automatic cut off with a push button latch. LM35 is a precision temperature sensor IC, which can be effectively used for detecting temperature differences accurately. For more details regarding this IC you can refer to this […]

Filed Under: Temperature Controllers Tagged With: Button, Controller, LM35, Push, Temperature

DC Power Controller Circuit

Last Updated on January 3, 2024 by Swagatam 12 Comments

DC power controller circuit

In this post I have explained a DC power controller circuit which can be used for controlling the power of motors and lamps with maximum efficiency. By Sangeeta Naik How MOSFETs conduct to Handle Power Efficiently A minimum amount of power is lost whenever a power transistor (BJT or MOSFET) is in the turned off […]

Filed Under: Voltage Control and Protection Tagged With: Controller, DC, Power

Traffic Light Controller Circuit [Signal Red, Green, Amber]

Last Updated on May 16, 2026 by Swagatam 11 Comments

traffic light signal

A traffic light controller circuit can be used for controlling the sequential illumination of the RED, ORANGE and GREEN traffic signal lamps, by maintaining appropriate delays between the illumination sequence. In real traffic signal light system we all have seen how the red, orange and green lamps switch ON/OFF in sequence with specific amount of […]

Filed Under: Automobile Electronics Tagged With: Amber, Controller, Green, Light, Signal, Traffic

RGB Light Strip Controller Circuits

Last Updated on June 8, 2026 by Swagatam 32 Comments

image5

In this post we are going to see how we can construct an RGB LED light strip controller circuit for PC cabinets and also for general decoration purposes. In this post we will construct a couple of RGB light strip controller designs, one for a PC cabinets and one for general purpose which can be […]

Filed Under: Lamps and Lights Tagged With: Circuits, Controller, Light, RGB, Strip

Model Train Controller Circuit: Delay Acceleration and Braking

Last Updated on September 3, 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

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