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attiny85

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.

ATtiny85 Digistump USB HID keyboard token using modern firmware development.

MAX7219tiny - Tinusaur MAX7219 Library for LED 8x8 Matrix

El objetivo de este proyecto es para emitir un pequeño sonido que nos alerte tanto por alto ruido o por cercanía. Lo planteo principalmente para un perro que se acerca a la basura demasiado y además ladra constantemente.

code for the book Lets learn ATTiny85 board programming using Arduino

The Poor Man's Rubber Ducky is an open source automated HID (human interface device) project based on the Digispark ATtiny85 USB Development Board.

The Open-Drip-Sensor is a frugal scientific instrument that counts and display the drip-rate of an intravenous-line. It can be adapted on any kind of drip-chamber.

Bluebox PCB using an ATtiny85 AVR microcontroller and a 3 x 4 resistor-ladder keypad

Minimal, Transmit-only Software Serial for ATtiny85

Simple pulse divider for irrigation flow meter