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Homecadia sensor-01 harness board

vavallee·homecadia·circuit-board-maker/hb-01/hb-01.kicad_pcb

Homecadia sensor-01 harness board layout, top view — open source board by vavallee

About the Homecadia sensor-01 harness board

Homecadia sensor-01 harness board is an open source PCB design by vavallee, published on GitHub under the MIT license. It is a 2-layer board measuring 48 × 40 mm, with 14 components from 12 distinct parts.

By type, the board carries 5 connectors, 5 resistors, 2 diodes, 1 switch and 1 capacitor.

It belongs with the iot & wireless, sensors and displays & leds designs in this gallery.

From the project

Home-built Matter-over-Thread devices for Home Assistant — battery-powered e-ink room sensor on XIAO ESP32-C6

Investigation into replacing the hand-wired sensor-01 build with a custom PCB, and the board designs that came out of it.

Don't build a full custom PCB for three units. Build hb-01, hand-wire the three units, and measure the assembled device before letting any power argument justify a board spin. Full reasoning in pcb-evaluation.md.

Audited 2026-08-13 against the main docs. None of these are fatal to the evaluation's conclusion, but every one must be resolved before hb-01 is ordered.

Homecadia sensor-01 harness board, from the project README
From the project README

Homecadia sensor-01 harness board bill of materials (BOM)

14 components, 12 distinct parts.

QtyPartRefs
1
USB-C 16P
J1
1
XIAO field 2x7
J2
1
BAT JST-PH
J3
1
SHT40 JST-SH
J4
1
5V out
J5
1
PEC11R-4220F-S0024
SW1
1
SP0503BAHTG
D1
1
LED 3mm
D2
1
100nF
C1
2
5.1k
R1, R2
2
1M 1%
R3, R4
1
1k
R5

Homecadia sensor-01 harness board design files

The KiCad project lives in the vavallee/homecadia repository on GitHub; these links point at the commit this page was built from.

Homecadia sensor-01 harness board: common questions

How big is the Homecadia sensor-01 harness board?

The Homecadia sensor-01 harness board measures 48 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Homecadia sensor-01 harness board?

14 components, from 12 distinct parts. The full bill of materials is listed on this page.

Where can I download the Homecadia sensor-01 harness board design files?

From the vavallee/homecadia repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Homecadia sensor-01 harness board design in my own project?

Yes, under the terms of its MIT license, which vavallee chose for the repository.

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