https://procrastineering.blogspot.com/2007/12/ir-led-pen-schematic-and-ir-keychain.html?showComment=1199684880000
Procrastineering - Project blog for Johnny Chung Lee: IR LED pen schematic and IR keychain lights
I've uploaded a simple schematic of the IR LED pen I used. If you use a good LED, you can probably run it safely directly off a 1.5v AAA ba...
project blogchung leeir ledkeychain lightsjohnny
https://lightorati.in/keychain-lights/nitecore-flexible-usb-c-cable-stand
Nitecore USB-C Flexible Stand - Bendable USB-C Cable for hosting Small Keychain lights as work...
Nitecore USB-C Cable Flexible Stand for Small flashlights, Keychain Lights- Can be used as both charging cable and reading light or work light stand - Can...
usb chosting smallkeychain lightsnitecoreflexible