P

pcb-design

USB‑C, hand‑solder desk toy that rolls two six‑sided dice — an ATtiny85 watches a light sensor and shows the result on a 12‑LED bar display.

A USB‑C powered, hand‑solder Morse code learning tool — taps on the capacitive touch pad like a telegraph key; an ATtiny85 decodes the dots and dashes, sounds them on the buzzer, and shows the message on a 5x7 LED matrix via the MAX7219.

USB‑C, hand‑solder countdown toy — an ATtiny84 drives a single 7‑segment digit and a piezo buzzer through a rocket‑launch countdown.

USB‑C, hand‑solder desk toy that flashes an LED when it hears a sharp sound — a mic front‑end and a 555 timer fire a ~2.4 second "lightning flash."

Documentación y diseño de hardware/PCBs caseras para nodos Meshtastic (R-Node): routers solares autónomos, nodos portátiles y HATs.

A two-stage audio amplifier: active band-pass filter (TL071) into unity-gain power buffer (OPA551). Designed in Proteus, built on breadboard and PCB.

Rust split keyboard designed with a y2k aesthetic

heat-sensor using Proteus and Altium

PCB made in KiCad 5.1.6. Makes use of NFC and includes some test PCB art.

AC powered relay control board using Lora radios. Turn on lights, heaters or whatever else you need at a distance.

A controller for a custom, open source, linear actuator dual-swing gate opener. Uses Arduino and LoRa!