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.
Specs and Features
Dimension
0.40" x 0.45" (10.3 mm x 11.5 mm)
Weight
0.04 oz (0.68 g)
Microcontroller
ATmega32U4
Operating Voltage
3.3 V
Input Voltage
4 - 13 V
Digital I/O Pins
12 + 3 (RGB LED)
PWM Channels
4 + 3 (RGB LED)
Analog Input Channels
4
Interface
USB, SPI, I2C (TWI), ISP
Peripherals
Reset button, RGB (rainbow) LED
Bootloader
Arduino Leonardo
Flash Memory
32 KB (ATmega32U4) of which 4 KB used by bootloader
SRAM
2.5 KB (ATmega32U4)
EEPROM
1 KB (ATmega32U4)
Clock Speed
16 MHz
Pin Pitch
0.05" (1.27 mm)
Atto Pinout Diagram
Atto Schematic
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