ATTINY85 USB Development Board

ATTINY85 USB Development Board 

The ATTINY85 USB Development Board (often called Digispark ATTINY85) is a compact, low-cost microcontroller board based on the Atmel ATTINY85 8-bit MCU.
It includes a built-in USB interface, enabling easy programming through the Arduino IDE without needing an external programmer.

Despite its tiny size, the ATTINY85 offers impressive capabilities including PWM outputs, ADC channels, and onboard I/O—making it ideal for small automation, wearable electronics, sensors, and compact embedded projects.

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Specifications :

• Support for the Arduino IDE 1.0 + (OSX/Windows/Linux).
• Power via USB or External Source or 7-16 v to 5 v (automatic selection).
• The On – board, 150 ma 5 v Regulator.
• Built – in USB and serial was debugging).
• 6 I/O Pins (2 inform the for USB only if your program actively communicates over USB, otherwise you can use all 6 even if you are programming via USB).
• 8 k Flash Memory (about 6 k after bootloader).
• The I2C and SPI (vis USI).
• PWM on 3 pins (more possible with Software PWM).
• The ADC on 4 pins.
• The Power LED and the Test/Status leds.

Applications

• Miniature automation projects
• Simple robotics and motion control
• LED lighting effects (Neopixel/WS2812 control)
• Wearable electronics and compact gadgets
• DIY USB devices (keyboard/mouse emulation)
• Battery-powered IoT sensors
• Small motor/servo controller units
• Prototyping and embedded experimentation
• Capacitive or button-based input devices
• Signal generator or timing circuits

Attiny85 Bootloader

Pinout Diagram