ATtiny85 Projects

Build a compact temperature monitor using an ATtiny85 microcontroller, an NTC temperature sensor, an LED, and a buzzer. When the temperature gets too hot, the LED flashes and the buzzer sounds an alert.

Turn an analog knob to steer an SG90 servo motor smoothly from 0 to 180 degrees. Learn how microcontrollers read knob angles and generate precision timing pulses without external libraries.

Cycle an RGB LED through solid red, green, blue, and an animated color strobe using a single push button. Learn how multi-color LEDs mix light and how to build a clean multi-state controller with an 8-pin microcontroller.

Press a button and watch a red LED flash while a buzzer beeps out the international SOS signal — three short, three long, three short. This project teaches you how to control timing precisely with a tiny 8-pin microcontroller.

Connect a light sensor and a red LED to an ATtiny85. When the room goes dark, the LED slowly fades on like a breathing glow. When light returns, it quietly fades off. This project shows how to read a sensor and smoothly control brightness — all from an 8-pin chip.

Connect a red LED and a resistor to an ATtiny85 microcontroller and watch it blink on and off once per second. This is the first project everyone does with a new chip — simple, satisfying, and a solid foundation for everything else.