Digispark USB ATtiny85 microUSB

Product detailed description

The Digispark USB with the ATtiny85 microcontroller is a miniature development board that you can program directly via the microUSB connector using the Arduino IDE – without the need for an external programmer. Thanks to the Micronucleus bootloader and software USB emulation, it is suitable for simple USB HID devices, such as macro keyboards or game controllers, as well as for small projects with sensors and LEDs. You can power the board via USB or from an external source via the VIN pin, where the onboard linear regulator reduces the voltage to 5 V.

Specifications:

• Microcontroller: ATtiny85 (8-bit AVR), 16.5 MHz
• Memory:
  • Flash: 8 kB (approx. 6 kB for the program, the rest is used by the bootloader), min. 10,000 write cycles
  • SRAM: 512 B
  • EEPROM: 512 B
• Inputs and outputs:
  • Digital I/O: 6 (P0–P5), of which P3 and P4 are used by USB
  • PWM: 3 (P0, P1, P4)
  • ADC: 4 (P2, P3, P4, P5)
  • Output load: max. 20 mA per pin
  • LED: user LED on P1
• Power Supply:
  • USB: 5 V (microUSB)
  • VIN pin: 7–12 V DC, never exceed 12 V
  • 5V Pin: direct regulated 5 V
  • Max. regulator current: 500 mA (actually less when powered via VIN – the higher the input voltage, the more the regulator heats up)
• Programming: Arduino IDE (Digistump AVR Boards package), Digistump drivers must be installed on Windows
• Dimensions: 26 × 18 mm
• Weight: 5 g

Important power supply notice:

• Apply a maximum of 12 V to the VIN pin. Higher voltages (e.g. 13.8–14.4 V from a lead-acid battery, charger, or unregulated adapter) and voltage spikes when connecting the power source can permanently damage the board – typically, the microcontroller will fail to boot, and Windows will report an unknown USB device (code 43).
• If you need to power the board from a higher voltage, use a step-down converter to reduce the voltage to 5–9 V.
• The linear regulator converts the voltage difference into heat – the board will heat up significantly with higher input voltages and higher current draw.

Package contents:

• 1× Digispark USB ATtiny85 microUSB
• 1× pin header (unpopulated)

Note:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.