4 layers36 × 50.2 mm
Racer
StuckAtPrototype/Racer
These are structured into their own files. I could have used submodules, but decided against it.
83 parts3.8kApache-2.0
2 layers30 × 45 mm
Mitsubishi2zigbee
Cleboost/mitsubishi2zigbee1KiCad PCB for a Waveshare ESP32-C6-Zero carrier that plugs into a Mitsubishi CN105 service port.
- Size
- 30 × 45 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 22
- Pads
- 42
- Tracks, vias
- 69, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 29 Jun 2026
- Updated
- 30 Oct 2026
Overview
Mitsubishi2zigbee is an open-source printed circuit board by Cleboost, from the Cleboost/mitsubishi2zigbee repository on GitHub. It is a 2-layer board of 30 × 45 mm with 10 parts on 22 nets, routed with 69 tracks and 0 vias.
It is built around the BSS138. Its parts include 5 resistors, 2 transistors, 1 capacitor, 1 IC and 1 connector. It belongs with the ESP32 and RISC-V boards of this library.
Main components
1README
hardware/README.mdHardware
KiCad PCB for a Waveshare ESP32-C6-Zero carrier that plugs into a Mitsubishi CN105 service port.
| Item | Details |
|---|---|
| MCU footprint | Waveshare-ESP32:Waveshare-ESP32-C6-Zero_THT (2×9 pin headers) |
| CN105 connector | JST:JST_PA_B05B-PASK-1_1x05_P2.00mm_Vertical_CN105 |
| Level shifting | 5 V UART from the unit → 3.3 V for the ESP |
CN105 UART wiring (rev 1 errata)
Mitsubishi CN105 pinout (viewed from the board):
| Pin | Signal | Direction (unit) |
|---|---|---|
| 4 | TX | unit → ESP (ESP must receive here) |
| 5 | RX | ESP → unit (ESP must transmit here) |
Rev 1 PCB bug: pins 4 and 5 were swapped at the JST connector (ESP TX was routed to unit TX pin 4, ESP RX to unit RX pin 5). Symptom: yellow LED (Zigbee OK but CN105 silent), no UART traffic - no amount of firmware fixes this.
Fix on assembled board: cross only CN105 pins 4 ↔ 5 (swap the two UART wires on the cable or at J1). GND / 5 V unchanged.
Fixed in mitsubishi2zigbee.kicad_pcb for the next fabrication run.
Open in KiCad
kicad hardware/mitsubishi2zigbee.kicad_proProject-specific symbol and footprint libraries live in libs/.
Layout
hardware/
├── README.md
├── schematic.png
├── mitsubishi2zigbee.kicad_pro
├── mitsubishi2zigbee.kicad_sch
├── mitsubishi2zigbee.kicad_pcb
├── fp-lib-table
├── sym-lib-table
└── libs/
├── JST.pretty/
├── Waveshare-ESP32.pretty/
└── Waveshare-ESP32.kicad_symParts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4 |
| 2 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | 0R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | CN105 | JST:JST_PA_B05B-PASK-1_1x05_P2.00mm_Vertical_CN105 | J1 |
| 1 | ESP32-C6-Zero | Waveshare-ESP32:Waveshare-ESP32-C6-Zero_THT | U1 |
Questions
How big is the Mitsubishi2zigbee PCB?
It measures 30 × 45 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mitsubishi2zigbee use?
10 parts, built around the BSS138. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Mitsubishi2zigbee KiCad files?
From the Cleboost/mitsubishi2zigbee repository on GitHub, at the commit this page was made from: the board is hardware/mitsubishi2zigbee.kicad_pcb and its schematic hardware/mitsubishi2zigbee.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mitsubishi2zigbee design in my own project?
Its repository states no licence, so its author keeps all rights: ask Cleboost before reusing the design.
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