ATTINY85 Mini USB Development Board

ATTINY85 Mini USB Development Board 

The ATTINY85 Mini USB Development Board (Digispark-style) is a compact microcontroller board built around the Atmel ATTINY85 8-bit MCU.
It includes a USB interface built directly on the PCB, allowing you to plug it into a computer without needing an external USB-to-serial converter or AVR programmer.

Despite its small size, the board supports PWM, ADC, software I²C/SPI, and multiple digital I/O options—making it perfect for ultra-compact embedded and automation projects.
It is fully programmable using the Arduino IDE via a USB bootloader.

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Features :

• High Performance, Low Power AVR® 8-Bit Microcontroller
• Non-volatile Program and Data Memories
• 8K Bytes of In-System Programmable Program Memory Flash
• Endurance: 10,000 Write/Erase Cycles
• 512 Bytes In-System Programmable EEPROM
• 512 Bytes Internal SRAM
• Peripheral Features
• Two High-Frequency PWM Outputs with Separate Output Compare Registers
• USI – Universal Serial Interface (12C, SPI, 1-wire) with Start Condition Detector
• 10-bit ADC
• 4 Single Ended Channels
• Two Differential ADC Channel Pairs with Programmable Gain (1x, 20x)
• Speed Grade
• 0 – 10 MHz @ 2.7 – 5.5V, 0 – 20 MHz @ 4.5 – 5.5V
• Industrial Temperature Range
• Low Power Consumption
• Active Mode:1 MHz, 1.8V: 300 µA

Applications

• Mini USB-based embedded projects
• DIY USB devices (keyboard, mouse, HID emulation)
• LED controllers (Neopixel / WS2812 effects)
• Wearable electronics
• Compact IoT sensors
• Small robots / servo controllers
• Portable, battery-powered gadgets
• Touch or button-based user interfaces
• Timers, counters, and automation circuits
• DIY USB security tokens or authentication devices