USB Digispark ATtiny85 Development Board – Ultra-Compact Arduino Compatible Module

The Digispark ATtiny85 is the smallest and most affordable Arduino-compatible development board available. Perfect for when an Arduino Uno is too large or overpowered for your project, this miniature module plugs directly into your computer’s USB port for easy programming and power.

Based on the Atmel ATtiny85 microcontroller, it offers 6 I/O pins and support for I2C and SPI, making it a powerhouse for wearable electronics, small IoT devices, and DIY robotics. Its compact “keychain” size and low power consumption make it a favorite for students and hobbyists across Pakistan looking for a versatile prototyping platform.

Technical Specifications:

• Microcontroller: ATtiny85 (8-bit AVR RISC)

• Flash Memory: 8 KB (Approx. 6 KB available after bootloader)

• Operating Voltage: 5V (USB) or 7V to 35V (External via Vin)

• Internal Oscillator: 8.0 MHz (Software adjustable to 16.5 MHz)

• I/O Pins: 6 Digital Pins (2 are used for USB communication)

• Analog Inputs: 4 Pins (ADC)

• PWM Channels: 3 Pins (Software PWM possible on more)

• Interfaces: I2C and SPI (via USI)

• Regulator: On-board 500mA 5V Regulator

• Indicator LEDs: Power LED and Test/Status LED (Pin 1)

• Dimensions: 25mm x 18mm