Thursday, September 28, 2023
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ATTO Board – The World’s Smallest Arduino Compatible Board

Atto is the world’s smallest Arduino compatible board! It is based on the ATmega32U4 microcontroller and comes with reset push-button as well as an RGB (rainbow) LED controlled by 3 PWM channels.

Atto’s tiny profile allows it to fit into any miniature projects! Perfect for wearables and portable devices. There are also available two different types of breadboard friendly expansion boards and all products from are available for pre-order. According to website, Additional accessories and add-ons, such as battery power shields, will be coming soon!

Specs and Features of ATTO Board

ATTO board specifications:

  • MCU – Microchip (Atmel) ATmega32U4 8-bit AVR microcontroller @ 16 MHz with 32KB flash pre-loaded with Arduino Leonardo bootloader (~4KB footprint), 2.5KB SRAM, 1KB EEPROM
  • Expansion – 2x 8-pin 1.27mm pitch through holes for 12 digital I/Os, 4x PWM, and 4x analog input channels. UART, SPI, I2C/TWI, and ISP interfaces are also supported
  • USB – Micro USB port for power and programming
  • Misc – RGB LED via 3x PWM, Reset push-button
  • Power Supply – Input: 4-13V DC via Vin, 5V via micro USB port; 3.3V operating voltage
  • Dimensions – 11.5mm x 10.4 mm
  • Weight – 0.68 grams


atto dev board

ATTO Pinout Diagram

atto pinout diagram

Watch this video:

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Harshvardhan Mishra

Hi, I'm Harshvardhan Mishra. I am a tech blogger and an IoT Enthusiast. I am eager to learn and explore tech related stuff! also, I wanted to deliver you the same as much as the simpler way with more informative content. I generally appreciate learning by doing, rather than only learning. If you want to help support me on my journey, consider sharing my articles, or Buy me a Coffee! Thank you for reading my blog! Happy learning!

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