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Use this Battery for 50 Years without Charging

Last Updated on January 16, 2024 by Swagatam 4 Comments

betavolt battery

A novel battery technology, developed by Beijing-based firm Betavolt, has been introduced. It boasts an astounding 50-year lifespan without the need for maintenance or charging. With 63 radioactive isotopes contained in a module the size of a penny, this ground-breaking nuclear battery is a leader in the field of atomic energy miniaturization. https://twitter.com/Byron_Wan/status/1746801325722239367/photo/1 Advancements in […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charging, without, Years

Line Follower Robot Circuit without Microcontroller or Arduino

Last Updated on March 26, 2025 by Swagatam 8 Comments

line follower diagram

In this article I have explained a simple line follower robot circuit, also known as line tracker vehicle, using just a couple of op amps from the IC LM324 and a few other components, without using complex Arduino or microcontrollers. It means this project can be built without any coding, just by using discrete components, […]

Filed Under: Automation Projects Tagged With: Arduino, Follower, Line, Microcontroller, Robot, without

Build this Mosquito Bat without Battery

Last Updated on January 2, 2024 by Swagatam 57 Comments

bat

This simple homemade mosquito swatter bat neither requires a circuit nor a battery for the operation. The entire design works using a single high voltage capacitor and through quick charging from mains AC socket. (Designed by me) Introduction In a few of my earlier posts I have discussed how to make mosquito zappers using the […]

Filed Under: Pets and Pests Tagged With: Battery, Build, Mosquito, without

Obstacle Avoiding Robot Circuit without Microcontroller

Last Updated on June 21, 2020 by Swagatam 48 Comments

setup

In this post I have explained a simple obstacle avoiding robot circuit without microcontroller and without using special motor driver circuits or ICs. The idea was requested by Mr. Faiyyaz The Design Basically it’s in the form of a moving vehicle which is able to detect and avoid potential obstacles on its path and change […]

Filed Under: Sensors and Detectors Tagged With: Avoiding, Microcontroller, Obstacle, Robot, without

How to Trigger a Camera Remotely without Physical Presence

Last Updated on July 3, 2019 by Swagatam 10 Comments

In this article I have explained a simple RF remote control circuit which can be used for activating a digital camera remotely, by a press of a button. The idea was requested by Mr. Pat Circuit Objectives and Requirements I’m Pat, from France. Congratulations for your blog & website about electronic’s devices : it’s the […]

Filed Under: Remote Control Circuits Tagged With: Camera, Physical, Presence, Remotely, Trigger, without

Quadcopter Remote Control Circuit without MCU

Last Updated on July 6, 2019 by Swagatam 106 Comments

DRV

Although a quadcopter remote control circuits can be very easily procured from the market or from any online store, an avid electronic hobbyist is never allowed to learn how actually these function and whether or not these can be built at home? In this article I have explained how to build a simple quadcopter remote […]

Filed Under: Remote Control Circuits Tagged With: Control, MCU, Quadcopter, Remote, without

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