The Digispark ATtiny85 is an MCU development board based on the Atmel ATtiny85. It is similar to the Arduino line, only cheaper, smaller, and a bit less powerful. With a whole host of shields to extend its functionality and the ability to use the familiar Arduino IDE, the Digispark is a great way to jump into electronics, or perfect for when an Arduino is too big or too much.
Key Features
Direct USB Plug: No cables required! The PCB has USB contacts built-in for instant programming and power.
HID Emulation: Can act as a USB Keyboard, Mouse, or Joystick—popular for “Macro Pads” or automated script injection.
Arduino IDE Support: Easy to program using the standard Arduino environment (with the Digispark board manager).
6 I/O Pins: Includes 2 pins used for USB (only if your program communicates over USB), leaving 4 to 6 usable pins.
Onboard Regulator: Built-in 5V regulator allows you to power it with up to 12V DC via the “VIN” pin.
Technical Specifications
Feature
Specification
Microcontroller
ATtiny85 (8-bit MCU)
Clock Speed
16.5 MHz (Internal Osc)
Flash Memory
8 KB (Approx. 6KB after bootloader)
I/O Pins
6 Pins (I2C, SPI, PWM, ADC)
Interfaces
I2C and SPI (via USI)
Power Options
USB 5V or External 7V–12V (VIN)
Status LEDs
Power LED and Test/Status LED (Pin 1)
Dimensions
25mm x 18mm
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