KiCad boards from 4 GitHub repositories tagged “robot-head”, the most starred first; open any of them in PCBKit.
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.