2 layers70 × 72 mm MBusHMI, the printed circuit board in 3D

MBusHMI

mBusHMI dev board

Size: 70 × 72 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 160
Nets: 126
Pads: 518
Tracks, vias: 1,995, 126
Pours: 21
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 28 Jun 2026
Updated: 8 Jul 2026

Overview

MBusHMI is an open-source printed circuit board by jmysu, from the jmysu/mBusHMI repository on GitHub. It is a 2-layer board of 70 × 72 mm with 160 parts on 126 nets, routed with 1,995 tracks and 126 vias.

It is built around the CMT-7525-80-SMT-TR and FH55-22S-0.5SH. Its parts include 23 resistors, 16 capacitors, 8 connectors, 3 switches and 2 diodes. It belongs with the ESP32, RP2040 and RISC-V boards of this library.

Main components

README

hardware/readme.md

mBusHMI hardware folder

Provide the PCB design files V2607(schematic/PCB layout) with KiCad10 format.

As Autodesk stop the EAGLE PCB supporting and move to the cloud Fusion360,
I choose the KiCad for faster PCB 3d renderning and circuit documentation.

Parts

160

Qty	Value	Footprint	References
10	0.1uF	Lib:C0603	C1, C3, C5, C6, C7, C8, C10, C13, C15, C16
7	LB_3V	LB_3V3	LB3, LB7, LB10, LB13, LB15, LB16, LB17
6	10K	Lib:R0603	R1, R2, R18, R19, R21, R22
5	33	Lib:R0603	R5, R6, R12, R23, R24
5	330	Lib:R0603	R10, R11, R13, R15, R20
4	5.1K	Lib:R0603	R3, R4, R16, R17
4	GND0	GND0	U$1, U$3, U$5, U$12
3	10uF	Lib:C0805	C2, C4, C9
3	1uF	Lib:C0603	C11, C12, C14
3	4K7	Lib:R0603	R7, R8, R9
3	TACT4X3	Button_Switch_SMD:SW_SPST_TS-1088-xR020	SW1, SW2, SW3
2	#__I2S_AUDIO__0	#__I2S_AUDIO__0	U$6, U$8
2	5V0	5V0	U$4, U$11
2	CMT-7525-80-SMT-TR	XDCR_CMT-7525-80-SMT-TR	BZ1, BZ2
2	DIODE_PMEG3020EJ,115	SODFL2512X80N	D1, D2
2	DNP	1X09_OLED_EC11	J3, J9
2	FH55-22S-0.5SH	Lib:HRS_FH55-22S-0.5SH	J10, J11
2	GREEN	LED-0603	LD1, LD2
2	GROVE-CONNECTOR-DIPSCLSDA	GROVE_SCLSDA-2.0_NO	J4, J8
2	HEADER-1X10I2S	1X10_ROUND_I2S_AUDIO	JP3, JP5
2	NMOS-BSS123	SOT23	Q1, Q2
2	PINHD-1X2NOSILK	1X02_NOSILK	JP1, JP4
2	RUTLER70MM	RULER70MM	RULER1, RULER2
2	TF0475710001	MOLEX_0475710001	J5, J7
2	USB-C	Lib:CUSB31-CFM2AX-01-X	X1, X2
2	WS2813-2020	WS2813C2020	RGB1, RGB3
1		dummyfp7	UNK_HOLE_7
1		dummyfp1	UNK_HOLE_1
1		dummyfp10	UNK_HOLE_10
1		dummyfp23	UNK_HOLE_23
1		dummyfp48	UNK_HOLE_48
1		dummyfp11	UNK_HOLE_11
1		dummyfp28	UNK_HOLE_28
1		dummyfp47	UNK_HOLE_47
1		dummyfp24	UNK_HOLE_24
1		dummyfp14	UNK_HOLE_14
1		dummyfp12	UNK_HOLE_12
1		dummyfp15	UNK_HOLE_15
1		dummyfp31	UNK_HOLE_31
1		dummyfp27	UNK_HOLE_27
1		dummyfp53	UNK_HOLE_53
1		dummyfp44	UNK_HOLE_44
1		dummyfp30	UNK_HOLE_30
1		dummyfp38	UNK_HOLE_38
1		dummyfp51	UNK_HOLE_51
1		dummyfp19	UNK_HOLE_19
1		dummyfp26	UNK_HOLE_26
1		dummyfp3	UNK_HOLE_3
1		dummyfp29	UNK_HOLE_29
1		dummyfp21	UNK_HOLE_21
1		dummyfp9	UNK_HOLE_9
1		dummyfp35	UNK_HOLE_35
1		dummyfp49	UNK_HOLE_49
1		dummyfp36	UNK_HOLE_36
1		dummyfp13	UNK_HOLE_13
1		dummyfp45	UNK_HOLE_45
1		dummyfp16	UNK_HOLE_16
1		dummyfp6	UNK_HOLE_6
1		dummyfp20	UNK_HOLE_20
1		dummyfp37	UNK_HOLE_37
1		dummyfp41	UNK_HOLE_41
1		dummyfp40	UNK_HOLE_40
1		dummyfp39	UNK_HOLE_39
1		dummyfp42	UNK_HOLE_42
1		dummyfp5	UNK_HOLE_5
1		dummyfp2	UNK_HOLE_2
1		dummyfp0	UNK_HOLE_0
1		dummyfp46	UNK_HOLE_46
1		dummyfp8	UNK_HOLE_8
1		dummyfp25	UNK_HOLE_25
1		dummyfp32	UNK_HOLE_32
1		dummyfp18	UNK_HOLE_18
1		dummyfp52	UNK_HOLE_52
1		dummyfp33	UNK_HOLE_33
1		dummyfp4	UNK_HOLE_4
1		dummyfp17	UNK_HOLE_17
1		dummyfp43	UNK_HOLE_43
1		dummyfp34	UNK_HOLE_34
1		dummyfp22	UNK_HOLE_22
1		dummyfp50	UNK_HOLE_50

The 137 most common of 160 parts.

Questions

How big is the MBusHMI PCB?

It measures 70 × 72 mm and has 2 copper layers, 1.6 mm thick.

What parts does the MBusHMI use?

160 parts, built around the CMT-7525-80-SMT-TR and FH55-22S-0.5SH. 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 MBusHMI KiCad files?

From the jmysu/mBusHMI repository on GitHub, at the commit this page was made from: the board is hardware/mBusHMI.kicad_pcb and its schematic hardware/mBusHMI.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the MBusHMI design in my own project?

Its repository states no licence, so its author keeps all rights: ask jmysu before reusing the design.

Category and platform

ESP32 RP2040 RISC-V

Topics

arduino esp32-c3 kicad pico platformio

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/jmysu-mbushmi" title="MBusHMI in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/jmysu-mbushmi.jpg" alt="MBusHMI" width="1200" height="900">

A picture that opens the board, for a README

[![MBusHMI](https://pcbkit.io/embed/boards/jmysu-mbushmi.jpg?size=s)](https://pcbkit.io/boards/jmysu-mbushmi)

Source

Repository: jmysu/mBusHMI
Board file: hardware/mBusHMI.kicad_pcb
Commit: cbf3f96
Licence: Not stated

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