Free Circuit Lab

ZB2L3 Lithium Battery Capacity Tester

I'Ve HACKED a cheap Weight Scale into a High End Multimeter!!!

DIY Electronic Ludo Dice: 1-6 Random number by 555 & 4017

Finally got Datasheet of Multimeter IC: How it works

I got SCAMMED!! and How I knew this...

How to Digitally Control Buck Converter Feedback: Lab Bench Supply Making

How to fix Liquid damage LCD: 90% Recovery Possible

Android Touchpad Works!! on Arduino/ ESP/pico

3-in to 1-out HDMI switcher (₹290/-) Review & Teardown

Low Budget 3D Printer for around 10,000 Rupees: Creality Ender3 Review

Convert Voltmeter to Ammeter!! Very easy

What I've Learned from a Failed LFP BMS

JLGW LiFePO4 4S 20A BMS All Protection Test; 1 Problem Found

How to set safe current for small lithium battery

How do Multimeters Read Temperature with no Sensor

Is Rs25/- Boost Converter Really a Thing? Full test Done

I Found a BIG Design ERROR in XL6009 Boost Module

How to Run a No Display/No Battery Phone: only Motherboard Can Run

Someone Hacked a MCB into RCCB !! does it protect Electric Shock?

This simple MOD turns any Multimeter into a Clamp Meter

How to connect BIG battery to a UPS, Full Guide in Hindi

How to repair Crompton BLDC remote: button not working

How to Digitally Control the Feedback of a Buck Converter

Medium Size Solar Installation (200W Load, No Electric)

Flipkart Smartbuy Mixer grinder Review: Good or Bad?

300W, 20A buck converter Test, Diagram & more

Real mAh testing of some chinese smartphone batteries

Bluetooth Mouse Keyboard Combo Review and Teardown

How to modify a UPS for all day running with BIG Battery

I Found a Serious Design Error in This Power Supply