Electronics Projects Archive

PCB layouts for integrated audio amplifier circuits of various power levels. Many also include schematic diagrams. Most are prepared according to the example application schematics in the integrated circuit’s datasheet…

The charging circuit current is adjustable between 0 and 5A. The output voltage is pulsed for fast charging. Additionally, an integrated voltage monitor automatically reduces the charging current when the..

Two documents prepared by Texas Instruments for their digital logic gate integrated circuits. One document contains detailed information about the internal structure and operating systems of the 74xx and 40xx..

Control of a 108kHz ultrasonic water atomizer with PIC12F1840. A high-power nebulizer crystal circuit is designed to operate 3 atomizers simultaneously. The ultrasonic water atomizer device has 3 different operating..

This system uses an LED strip with 80 WS2812B chips. One LED chip lights up every 0.5°C, and the temperature ranges from -5°C to +34.5°C. Each chip contains one red,..

In my article “How to Spot Weld Batteries? Tips & Tricks,” I provided detailed information about spot welding batteries. I’m not an expert; I’m researching and applying the techniques, and..

An Arduino Nano-based spot welding machine for spot welding 18650 batteries. All the details of the Arduino spot welding machine project, including 3D drawings, are shared. The spot welding machine..

Transformer Tester: After designing a microcontroller-based wide-range ring tester, the question arose whether a basic version of the Coil Tester could be designed, usable by anyone with electronics skills, using..

As I mentioned in my “Handmade 50W LED Flashlight” post, I built myself a high-powered flashlight. I can say it’s the best I could do with the materials I had..

A long-term timer circuit designed to remind you when your machine or equipment needs maintenance. If the warning or blocking time is not reached, the LED-2 indicator will remain lit,..