{"title":"Adafruit ATSAMD09 Breakout with seesaw","handle":"adafruit-atsamd09-breakout-with-seesaw","url":"/products/adafruit-atsamd09-breakout-with-seesaw","description":"The Adafruit ATSAMD09 Breakout with seesaw is a versatile I2C peripheral board built on the Adafruit seesaw framework. Seesaw is a near-universal converter that lets you add GPIO, ADC, PWM, and more to any I2C-capable microcontroller or single-board computer — all over a simple I2C connection.\n\nRather than sourcing separate I2C GPIO expanders, ADCs, and PWM drivers, this single board provides a wide range of capabilities controlled through an easy-to-use library. It's ideal for adding extra hardware support to platforms like Raspberry Pi, ESP8266, or Arduino.\n\nKey Features\n\n\nSeesaw I2C Framework – Universal converter providing GPIO, ADC, PWM, and NeoPixel control over I2C\n\n3× 12-bit ADC Inputs – High-resolution analogue-to-digital conversion\n\n3× 8-bit PWM Outputs – For LED dimming, motor control, and other applications\n\n7× GPIO – With selectable pullup or pulldown resistors\n\nNeoPixel Output – Drive up to 340 NeoPixel LEDs from a single pin\n\n64-byte EEPROM – Non-volatile memory for storing access tokens or MAC addresses\n\nInterrupt Output – Trigger from any of the configured peripherals\n\n2× I2C Address Selection Pins – Run multiple boards on the same bus\n\nActivity LED – Visual feedback for board status\n\nReprogrammable – Customise the firmware to adjust peripheral allocation (requires J-Link programmer and SWD adapter)\n\n\nAlso Available\n\n\nATtiny1616 Seesaw Breakout with STEMMA QT – More GPIO/ADC/PWM, 16KB flash, STEMMA QT connectors\n\nATtiny816 Seesaw Breakout with STEMMA QT – Compact alternative with STEMMA QT connectors\n\n\nIdeal For\n\nAdding extra I/O to Raspberry Pi, ESP8266, or Arduino projects\nNeoPixel control from I2C-only platforms\nRapid prototyping with configurable peripherals\nSeesaw firmware development and testing\n\n\nPackage Contents\n\n1× Adafruit ATSAMD09 Breakout with seesaw\n1× Header strip set\n\n\n\nNote: This board does not include a bootloader. To customise the seesaw firmware, you will need a J-Link programmer and an SWD adapter breakout. Custom firmware builds use Atmel Studio (or arm-gcc with a Makefile). No support is provided for custom seesaw builds.\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":6677,"title":"Default Title","sku":"AF-3657","price":9.65,"on_sale":false,"in_stock":true,"available_quantity":19,"option1":"Default Title"}]}