Piezo amplifier with mpf-102 (and a bit of homebrew etching)

Surface mount soldering on an ATTINY13 breakout

Book with a secret compartment, making a booksafe.

Building a piezo pre-amp using TL072 - Video one (testing)

Home made pcb's with dry film etch resist.

Solar garden spider light.

Phone holder modified into 5v power supply

Barely adequate robotry - starting robot tank build - One.

20w resistor - Show us your gubbins.

Getting rid of tape or adhesive residue

Fixing a $1 flashlight, quick repair.

Overhead camera rig for $5

Introduction video

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