Adafruit Neo Trinkey - SAMD21 USB Key with 4 NeoPixels - Adafruit 4870

Adafruit Neo Trinkey module is half USB and Adafruit Trinket. The board is equipped with four RGB NeoPixel LEDs. Adafruit Trinkey was based on the ATSAMD21 chip. Four LEDs are operated by one pin of the microcontroller. Two other pins are used for touch buttons, which were placed on the left and right edge of the board, they are used to adjust the light intensity. The reset button allows the module to enter bootloader mode. An undersized USB connector allows the module to be plugged into a computer port or powerbank, adding the function of a USB flashlight. The module can be programmed in CircuitPython or Arduino with NeoPixel and FreeTouch libraries for the touch button. The USB connector provides a serial, MIDI or HID connection. The module can be used as a simple status notification tool, timer, macro keyboard, random color generator or as an LED flashlight.

• Microcontroller: ATSAMD21E18
• Core: ARM Cortex M0+ 32-bit
• Clocking: 48 MHz
• Flash memory: 256 kB
• RAM: 32 kB
• Communication: native USB port, supported by any system, can work with Arduino or CircuitPython as USB serial console, MIDI, HID or small disk to store Python scripts
• Programming: Arduino IDE or CircuitPython
• Number of LEDs: 4 x RGB NeoPixel
• Two capacitive touch buttons
• Reset button to run code or enter bootloader mode
• Dimensions: 31.7 x 12.2 mm

• Manufacturer's website: Adafruit 4870
• User guide
• ATSAMD21 documentation
• ATSAMD21E18 chip homepage
• PCB EagleCAD files
• 3D model
• Object for Fritzing program