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

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.

Surface mount soldering on an ATTINY13 breakout

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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