ATTINY85 Arduino Development Board

ATTINY85 Arduino Development Board
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  • Brands CJMCU
  • Product Code:SQ2086
  • Availability: 1000
  • $2.35
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  • Ex Tax:$2.35
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Tags: ATTINY85, Arduino board, Digispark, ATtiny85 development board, Micro USB board, tiny AVR, Arduino compatible, IoT development board, low power microcontroller

The ATTINY85_arduino is an ultra-compact Arduino-compatible development board built around the ATtiny85 8-bit AVR microcontroller, designed for projects where space, cost, and power consumption are critical. This board brings the Arduino ecosystem to the tinyAVR family, allowing users to program the ATtiny85 directly through the Arduino IDE via an onboard Micro USB port. The ATtiny85 microcontroller provides 8KB of in-system programmable flash memory, 512B of SRAM, and 512B of EEPROM, along with 6 general-purpose I/O pins that can be configured for digital input/output, PWM, and analog input functions.

The Digispark ATtiny85 development board integrates an onboard voltage regulator, a status LED, and the necessary USB interface circuitry, eliminating the need for external programmers or USB-to-serial adapters. With 6 I/O pins, the board supports up to 4 analog inputs and 3 PWM outputs, while I2C and SPI communication are available through the shared digital pins using the ATtiny85's Universal Serial Interface (USI). Because the pins serve multiple functions, designers should plan their interfaces carefully when combining I2C, SPI, and analog sensing in a single project.

This board is well suited to compact IoT nodes, wearable electronics, small control modules, and educational projects. Its low power consumption and miniature form factor—approximately 2.6cm × 1.8cm per the Aftab Rayaneh listing—make it a practical choice for embedding into space-constrained enclosures and battery-powered devices. The board is programmed through the Arduino IDE, making the ATtiny85 platform accessible to makers who are already familiar with Arduino development.

Digispark ATtiny85 development board Application

  1. Compact Internet of Things (IoT) sensor nodes
  2. Wearable electronics and miniature embedded devices
  3. Small control modules and automation projects
  4. Educational projects for learning Arduino and AVR programming
  5. Battery-powered sensor and data-logging circuits
  6. USB HID devices and simple interface controllers
  7. Space-constrained prototype development
  8. Low-power standalone microcontroller applications

Digispark ATtiny85 development board Specifications

  1. Product Model: ATTINY85_arduino
  2. Microcontroller: Microchip/Atmel ATtiny85 (8-bit AVR RISC)
  3. Clock Speed: 1 MHz (per Aftab Rayaneh) / 16.5 MHz typical for Digispark-style boards
  4. Flash Memory: 8 KB (approximately 6 KB usable after bootloader)
  5. SRAM: 512 B
  6. EEPROM: 512 B
  7. Digital I/O Pins: 6
  8. Analog Input Pins: 4 (10-bit ADC)
  9. PWM Outputs: 3
  10. Communication Interfaces: I2C, SPI (via USI)
  11. USB Interface: Micro USB
  12. USB Implementation: Software-based (V-USB / Micronucleus bootloader)
  13. Operating Voltage: 5 V (logic)
  14. Input Voltage (VIN): 7–35 V (automatic selection, per Digispark reference)
  15. Onboard Regulator: 500 mA 5 V regulator
  16. Status LED: Yes (onboard LED)
  17. Programming: Arduino IDE (Digispark board support package)
  18. Board Dimensions: 2.6 cm × 1.8 cm (per Aftab Rayaneh) / ~25 mm × 18 mm (Digispark reference)
  19. Operating Temperature: -40 °C to +85 °C (ATtiny85 industrial grade)

Features

  1. Ultra-compact Arduino-compatible board based on the ATtiny85 microcontroller
  2. Micro USB port for programming and power via the Arduino IDE
  3. 8KB flash memory with approximately 6KB available for user sketches
  4. 512B SRAM and 512B EEPROM
  5. 6 general-purpose I/O pins with multiplexed functions
  6. 4 analog input channels with 10-bit ADC resolution
  7. 3 PWM outputs for dimming and control applications
  8. I2C and SPI communication via the ATtiny85 USI interface
  9. Onboard 500mA 5V voltage regulator for external power input
  10. Onboard status LED for visual feedback
  11. Low power consumption suitable for battery-powered and wearable projects
  12. Software-based USB (V-USB/Micronucleus) eliminates the need for a dedicated USB-to-serial chip
  13. Miniature form factor of approximately 2.6cm × 1.8cm
  14. Compatible with the Arduino IDE using the Digispark board support package
Electrical Parameters
Input Voltage 5V Or 7-9V
Board Parameters
EEPROM 512 Bytes
FLASH 8K Byte
SRAM 512 Bytes
Physical Parameters
Size 26 mm x 18 mm

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