Basic gesture sensing using 4 cardinal locations of photodiodes - this sensor is a little tough to use but it does work with practice.Ambient light sensing - how dark or bright is it in the room?.RGB color sensing can detect color when light refects off of an object - good for bright colorful items like LEGO bricks.Proximity sensing up to about 6" away by bouncing IR light off an object.The star of this Trinkey is the APDS9960 from Avago Technologies, which has a few different capabilities thanks to integrated IR LED, photodiodes, and RGB sensing: The Proximity Trinkey is perfect for simple projects that want to use motion, light or color sensing as an input to make fun and intuitive user experiences. Over the USB connection, you can have serial, MIDI, or HID connectivity. The SAMD21 can run CircuitPython or Arduino very nicely - both have existing APDS9960, NeoPixel and our FreeTouch (capacitive touch) libraries. A reset button lets you enter bootloader mode if necessary. Two other pins are used as capacitive touch inputs on the end - if you look carefully you can see the slotted end has left and right touch pads. One pin of the microcontroller connects to the two NeoPixel LEDs. There's an ATSAMD21 microcontroller on board with just enough circuitry to keep it happy. The PCB is designed to slip into any USB A port on a computer or laptop. We wanted to make it super-easy to add one of our most popular combination-sensors to any computer with a USB port and this one is ready to go in an instant. it's Proximity Trinkey, the circuit board with a Trinket M0 heart, APDS9960 Proximity, Light, RGB, and Gesture Sensor, and two RGB NeoPixels for a customizable glow. It's half USB Key, half Adafruit Trinket M0, half APDS9960 breakout. Adafruit Proximity Trinkey - USB APDS9960 Sensor Dev Board Product (AF-5022)
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