
Knuckle
HeyPCB/knuckle
35 mm round FOC driver for a GBM2804 gimbal motor that answers on the Open Duck Mini's servo bus as an STS3215. 6-layer KiCad 10 board plus printed standoff, cover and horn adapter.
Open-source boards designed in KiCad by HeyPCB on GitHub, from 28 repositories. A board’s address here is its repository’s there.

HeyPCB/knuckle
35 mm round FOC driver for a GBM2804 gimbal motor that answers on the Open Duck Mini's servo bus as an STS3215. 6-layer KiCad 10 board plus printed standoff, cover and horn adapter.

HeyPCB/moon-light
Luna, the night-light moon: A sleepy moon that turns on at dusk and tucks itself in after you fall asleep. KiCad 10, heypcb.ai merch.

HeyPCB/quack-core
Brain board for the Open Duck Mini: Pi Zero 2W carrier, 14-servo STS bus, fused 2S power path in stitched copper zones (15-18 A battery side), USB-C charging with balancing, IMU.

HeyPCB/air-ghost
Air Ghost: A little ghost that blushes red when your room needs fresh air. KiCad 10, heypcb.ai merch.

HeyPCB/badge-blob
Blob, the social battery badge: The name badge that tells people whether to come say hi. KiCad 10, heypcb.ai merch.

HeyPCB/cable-bunny
Cable Bunny: Is it a charge-only cable? Ask the bunny. KiCad 10, heypcb.ai merch.

HeyPCB/esp32-s3-devkit
ESP32-S3 dev board in the DevKitC-1 layout (31 x 64 mm, 4 layers, KiCad 10), built through HeyPCB's MCP server

HeyPCB/esp32-sensors-2
ESP32-S3 boards, one sensor each: KiCad 10, JLCPCB-ready, CERN-OHL-S-2.0

HeyPCB/fridge-owl
Hoot, the fridge reminder owl: The fridge owl that blinks at you until you've taken your meds and had your water. KiCad 10, heypcb.ai merch.

HeyPCB/hello-8051
HELLO: a tiny 8051 computer shaped like a 1984 desktop. AT89S52, 32 KB SRAM, 128x64 ST7920 LCD, USB-C. 112 x 158 mm 2-layer KiCad 10 board, DRC clean, firmware that writes hello. Built through HeyPCB's MCP server.

HeyPCB/iris-brainstem
Iris Brainstem: power and servo hub of the Iris robot head. 9 V USB-C PD in, 6 V / 5 A servo rail in stitched copper zones (measured), 5 V rail, half-duplex servo bus with ten ports, speaker amp.

HeyPCB/iris-brow
Iris Brow: forehead sensor strip of the Iris robot head. VL53L1X distance, APDS-9306 light, two I2S microphones 108 mm apart, touch pads, on a brow-shaped board. 2-layer KiCad 10 board, DRC-clean, fab-ready.

HeyPCB/iris-cortex
Iris Cortex: head controller of the Iris robot head. ESP32-S3 (16 MB flash, 8 MB PSRAM), OV2640 eye-camera FPC, iris-ring LED drivers, harness hub.

HeyPCB/iris-ring
Iris Ring: the 18 mm annular LED board behind each iris of the Iris robot head. 12 WS2812-2020 pixels around the camera lens. 2-layer, 0.8 mm KiCad 10 board, DRC-clean, with gerbers, BOM, CPL, STEP and renders.

HeyPCB/kestrel-esc
Kestrel 4in1: 6S 4-in-1 ESC running stock AM32 on four STM32G071s, with 24 CSD18540 FETs, LM5109B drivers and battery current sensing. 48 x 52 mm 6-layer KiCad 10 board, DRC clean, with gerbers, BOM, CPL and STEP.

HeyPCB/kestrel-fc
Kestrel H7: STM32H743 FPV flight controller with ICM-20602 + BMI088, MS5611, 16 MB blackbox, 5 V and switchable 10 V BECs.

HeyPCB/kestrel-gps
Kestrel GPS: u-blox MAX-M10S under a 25 mm ceramic patch with an LIS3MDL compass, for Betaflight, INAV and ArduPilot. 28 x 28 mm 4-layer KiCad 10 board, DRC clean, with gerbers, BOM, CPL and STEP.

HeyPCB/led-art
Shaped LED boards inspired by films, each in its own colour: KiCad 10, JLCPCB-ready, CERN-OHL-S-2.0

HeyPCB/led-art-2
More shaped LED boards inspired by films, each in its own colour: KiCad 10, JLCPCB-ready, CERN-OHL-S-2.0

HeyPCB/phone-robot
Bolt, the phone stand robot: A little robot that holds your phone, charges it, and peeks over the top to tell you how it's eating. KiCad 10, heypcb.ai merch.

HeyPCB/plant-buddy
Sprout, the plant buddy: A circuit-board sprout that cries a little blue tear when your plant is thirsty. KiCad 10, heypcb.ai merch.

HeyPCB/pomodoro-pal
Pomodoro Pal: A tomato on your desk that keeps you focused for 25 minutes, without your phone. KiCad 10, heypcb.ai merch.

HeyPCB/power-kit
Six open power and charging boards: KiCad 10, JLCPCB-ready, CERN-OHL-S-2.0

HeyPCB/quack-face
Face board for the Open Duck Mini's head: eye LEDs, projector driver, I2S amp and mic, antenna servos, shaped to the head. 4-layer KiCad 10 board plus printed standoffs, fit-checked in the head CAD.