This took about a month of weekends. The result is a full-size bartop arcade running RetroPie, with proper arcade buttons, joystick, marquee lighting, and authentic sound. Cabinet: • 18mm MDF cut on a friend's CNC — I'll share the DXF in the comments. • Dimensions: 460mm wide ×…
The non-I²C version of the standard 1602 LCD needs 16 wires and a contrast trimmer. The I²C backpack takes it down to 4 wires and gives you contrast control over software. If you're doing anything more than blinking an LED, this is the upgrade to make. Parts list: • 1602 charact…
What I made: a snap-fit enclosure that holds an Arduino UNO, a half-size breadboard, and a 9V battery pack — so a finished project doesn't end up as a loose pile of jumper wires on the desk. Designed in: Fusion 360 (free for personal use). STL + STEP files in the comments — your…
This is NOT a real radiation detector. It's a teaching tool that produces statistically realistic Poisson-distributed clicks at any background rate you choose, so you can demonstrate randomness, dose-rate maths, and counter electronics without owning an actual SBM-20 tube. Why b…
