Recent Projects

possibly the world's first pencil plotter

AutoGraph

john-opsahl John Opsahl

Rust espresso control. RP2040 PIO offloads pressure & flow, while Embassy runs PID & Wi-Fi on a single Pico W.

oximite

A Raspberry Pi PICO powered Synth using CD74HC4067 Multiplexer

Pi Synth

arnov-sharma Arnov Sharma

An artificial jellyfish on CYD (Cheap Yellow Display, ESP32).

Denki Kurage / Electric Jellyfish

A relay-based adder that performs arithmetic in balanced ternary trits. It can add two numbers in the range −13 to +13 per operand.

A Balanced Ternary Adder Built from Relays

jeroen-brinkman Jeroen Brinkman

See logic happen. This 3-bit relay adder uses diode grids and relays to show the steps of binary addition

A 3-Bit Visual Binary Adder

jeroen-brinkman Jeroen Brinkman

TritBits shows the working of Binary coded numbers, binary 2-complement coded negative numbers and balanced ternary numbers.

TritBits

jeroen-brinkman Jeroen Brinkman

This is a power plant design Boyscout logic and high school math (Particles removed desalination available R O ready water is end product)

Tidal Pulse Tower

alan-cyr Alan Cyr

Using 5 cheap BJT (BC547) I built a small, cheap and easy class C QRP amplifier for HF bands.

1-30 MHz 0.5-1W class C amplifier

Lilka: DIY ESP32-S3 Learning Console with NES Emulation & Lua Support

Lilka

bsverdlyuk b.sverdlyuk

I bought a broken function generator from a scrap yard for ₹10 and I'm trying to repair and understand how it works.

Reviving a Scrap Yard Function Generator

santanu-roy Santanu Roy

A studio ghibli inspired simple add on offering you candy

Soot Sprite Simple Add-On SAO

My idea is to build a small solar panel using 24 power transistors in a TO3 package. To do this, I'll uncover the transistors.

SOLAR BJT PHONE CHARGER

Portable SMD Electronic Components Counter

ReelTrack

How to attach cables to the desk which shall not be clamped

The perfect clamp

lion-mclionhead lion mclionhead

PixiJS port of the "Substrate" (XScreenSaver) algorithm.

Substrate | Pixi