Auto Power Off Circuit for Microcontrollers: Save Power

Reduce Your Microcontroller Power Consumption down to 0 Watt using the Method Explained In this Course to Extend Battery

  Ashraf Said

   Microcontroller, IT & Software, Hardware

  Language - English

   Published on 05/2022



In this course, You will learn how to build an Auto Power Off Circuit for Microcontrollers: Save Power.

You can use this circuit to auto-power off the Arduino, ESP32, ESP8266, PIC Microcontroller or any other microcontroller.

This circuit allows you to cut off power completely when the microcontroller is not executing any task. In other words, as soon as the microcontroller finishes executing a task it turns itself off via software. This is a great way to make batteries last longer in your electronics projects.

The main feature of the auto power-off circuit is that it cuts off the power completely. So, no power consumption at all when the microcontroller is not executing a task.

why you should take this course?

  • Uses an innovative circuit design to reduce power consumption

  • You do not need external components like resistors, capacitors, or crystals

  • The circuit is perfect for microcontrollers that are always running but don't maintain data or perform much computation during their operation

  • It reduces the power consumption to the point where they can be powered off without risk of data corruption

  • It's also great for powering tiny circuits (like RFID tags) without having to worry about battery life

  • No more worrying about rebooting your system or buying new batteries because of low power


The Latching Power Switch Circuit, also known as an Auto Power Off Circuit allows you to turn off your microcontroller via software, whether you’re using an ESP32, ESP8266, Arduino, or any other board. This circuit is especially useful to save power: the microcontroller turns itself down after executing a task.

In our example, we’ve used a pushbutton to close the circuit to provide power to the microcontroller, but you can use any other component to close the circuit – like a reed switch for example. We hope you’ve found this tutorial useful and you’re able to use it in your electronics projects to save power.

Who this course is for:

  • Anyone Interested in Learning How to make Battery operated Microcontroller based Projects last longer
  • Anyone Interested in Learning How to Auto Power Off a Circuit instead of using deep sleep mode
  • Anyone Interested in Learning the difference between deep sleep and Auto Power Off

What Will I Get ?

  • What is Auto Power Off Circuit?
  • Why You Should Use Auto Power Off
  • How Auto Power Off Circuit will save more than 90% of Your Project Power
  • Auto Power Off vs Deep Sleep
  • Hardware and Software Requirements
  • How the Auto Power Off Circuit Works
  • Circuit Design and Connection
  • PCB Design and 3D View
  • Microcontroller Code modification
  • Connect Auto Power Off with Your Microcontroller


  • A Computer
  • An Internet Connection
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