Julian Ilett
Electronics on the cheap - electricity for free.
I buy cheap electronics modules and components direct from Chinese sellers via eBay.
Most of this stuff works fine and the gadgets that I build work OK. But some of it is dodgy (even fake) and that's where the fun starts!
I like to use solar panels to power my workshop. This free energy is low voltage, so it's safe (mostly).
Coupon code: "JLCPCBcom" - for all and valid permanently

Modular Shed - Floor Joists

Batteries, Capacitors and Chords

Xtar USB Type C 1.5V Lithium Ion AA Batteries

Nickel or Sodium

Insulation Displacement

Ten Channels

Faulty Op Amp

The Cheapest Music Keyboard

998 Live Sound Card Test with the Vocoder

A CD4016 is added to the Vocoder

The Vocoder is back!

4-Wire Fan Controller/Tester

LTC3780 Module costs $4

EVE C40 LiFePO4 20Ah Cells from Hakadi Battery

Asperx 65W USB PD Power Bank Review

Lithium Ion Super Capacitors

Ideal Diodes from AliExpress

Voltage Controlled Relay gets Ideal Diode

Xtar 18650s have 4000mAh Capacity

Battery Testers Analysed

Supercapacitor Playground

Atorch DT20 has New Firmware

Coulometers Tested TK15 H56C

CHEAP Lidl Parkside Cordless Engraver 4V CHEAP

Sodium Battery with Voltage Display

Spot Welding 32140 Sodium Ion Cells using Supercapacitors

Atorch DT20 DC Energy Meter with WiFi Tuya

ZK-SJ30 Buck Boost 30A Converter uses LT8705

Fnirsi HRM-10 Internal Resistance Tester

Xtar VX4 Battery Charger Capacity Tester