Tiny 10x10mm ear studs (inspired by Mitxela) with 16 LEDs on each, arranged in a 4x4 matrix. Each matrix is controlled by an Analog Devices MAX32660 microcontroller paired with a Bosch BMA530 accelerometer to react to orientation changes. Each stud features a tiny 3.7v-3.3v step-down converter to accept rechargeable Li-ion cells. All tied up together in a CNC'd steel enclosure.
- 4-layer double-stacked rigid PCB (8 layers when assembled)
- Matrix on one "part" of PCB, other electronics on other "part"
- Features interconnect pads on back of each PCB to interface between the two "parts"
- 0.4mm thickness, 0.8mm total stacked thickness
- Features 1mm pads for programming, power pins
Top Layer
Bottom Layer
3D Model (Bottom Side)
3D Model (Top Side)
- 4-layer double-stacked rigid PCB (8 layers when assembled)
- Side 1:
- Battery charging circuitry for two batteries (fuel gauge and charger)
- USB-C Port
- ATMega328P microcontroller for controlling lights
- Side 2:
- 9x WS2812B 2mm NeoPixel Lights
- Reset SPDT switch for MCU
Top Layer
Bottom Layer
3D Model (Top Side)
3D Model (Bottom Side)
- CNC stainless steel construction
- Two-part design, one for battery side, one for top side
- Translucent PP diffuser over LED matrix
- Push-lock mechanism two secure both sides
- Permanent power wire going from battery side to top side in accent colour
- Points on back of top side for rotational stability while on ear
- CNC steel upper construction, 3D-printed plastic lower construction
- Battery charging GND connection made through upper case, positive connection made through insulated copper springs
- Magnets to secure studs
- USB-C charging, SoC indication through adressable RGB strip
