2 layers70 × 71 mm
Jewelled lc1
matthiasnowak/jewelled
This is a panel meant for production of the Earrings, allowing for 2 Earrings per panel.
148 parts3
4 layers18 × 13 mm
Mumo
kounocom/Mumo41A compact 13×18mm IMU module featuring the TDK InvenSense ICM-45686 6-axis IMU with integrated 32.768kHz clock and QST QMC6309H 3-axis magnetometer.
- Size
- 18 × 13 mm
- Copper layers
- 4
- Thickness
- 1.2 mm
- Parts
- 25
- Nets
- 22
- Pads
- 99
- Tracks, vias
- 169, 44
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Jul 2025
- Updated
- 9 Oct 2026
Overview
Mumo is an open-source printed circuit board by kounocom, from the kounocom/Mumo repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 4-layer board of 18 × 13 mm with 25 parts on 22 nets, routed with 169 tracks and 44 vias.
It is built around the YF4032K76833T8188081, ICM-45686 and QMC6309H, with the 0402WGF4701, CL05B104KO5NNN and 0402WGF1002 among its other parts. Its parts include 6 resistors, 3 capacitors, 3 ICs and 2 connectors.
Main components
7
YF4032K76833T8188081
SMD3225-4P-40℃~+85℃ 3.3V 32.768kHz 70uA ±10ppm SMD3225-4P Crystal Oscillators ROHSJWTCrystal Oscillators
ICM-45686
LGA-14(3x2.5)-40℃~+85℃ 1.71V~3.6V 16bit 2.2uA 8KB IMU (accelerometer + gyroscope) Motion event detection SPI、I2C X,Y,Z X,Y,Z ±32g ±4000dps LGA-14(3x2.5) Accelerometers ROHSTDK InvenSenseAccelerometersQMC6309H
WLCSP-4UncategorisedQST
0402WGF4701
0402-55℃~+155℃ 4.7kΩ 50V 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSUNI-ROYALChip Resistor - Surface Mount
CL05B104KO5NNN
0402100nF 16V X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT0402WGF1002
0402-55℃~+155℃ 10kΩ 50V 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSUNI-ROYALChip Resistor - Surface Mount
CL10A225KA8NNN
06032.2uF 25V X5R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
README
README.mdMumo - Compact ICM-45686+QMC6309H Module
A compact 13×18mm IMU module featuring the TDK InvenSense ICM-45686 6-axis IMU with integrated 32.768kHz clock and QST QMC6309H 3-axis magnetometer.
Features
- Compact Design: 13×18mm form factor
- High-Performance IMU: TDK InvenSense ICM-45686 6-axis IMU with integrated 32.768kHz clock for precise output timesteps
- 3-Axis Magnetometer: QST QMC6309H for 9-DOF sensing
- Connectivity: Castellated holes for flat mounting on compatible carrier PCBs
- Power Optimization: Solder bridges to disconnect I2C pull-ups for improved power efficiency when using SPI
- Easily Configurable I2C Address: Solder bridge for SD0 pin to change I2C address from
0x69to0x68
Compatibility
The pinout is mostly compatible with popular BMI160 and LSM6DS3 modules found on Amazon and AliExpress, with these differences:
- OSDO: Functions as VIN on AliExpress modules
- CLK_CTL: Not present on AliExpress modules
Schematic
Ordering Information
Important Notes
⚠️ IMU Pin 7: Pin 7 of the IMU is intentionally disconnected as recommended for the ICM-45686. If substituting with another IMU that requires pin 7 as GND, modify the PCB to connect IMU pin 7 to ground.
⚠️ Surface Finish: ENIG surface finish is recommended for easier soldering and better reliability with the BGA magnetometer.
⚠️ Castellated Holes: While castellated holes significantly increase manufacturing cost, they enable flat soldering onto carrier boards. Consider your application requirements before deciding to omit them.
License
See LICENSE.md for license information.
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 4k7 | Mumo Footprints:R_0402 | R3, R4, R5, R6 |
| 2 | 100nF | Mumo Footprints:C_0402 | C1, C2 |
| 2 | 10k | Mumo Footprints:R_0402 | R1, R2 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 1532H | Mumo Footprints:CLK | U3 |
| 1 | 2.2uF | Mumo Footprints:C_0603 | C3 |
| 1 | BOTTOM_PINS | Mumo Footprints:BottomPins | J2 |
| 1 | CS_PU_JMP | Mumo Footprints:JMP_CLSD | JP3 |
| 1 | ICM45686 | Mumo Footprints:IMU | U2 |
| 1 | QMC6309H | Mumo Footprints:QMC6309 | U1 |
| 1 | SCL_PU_JMP | Mumo Footprints:JMP_CLSD | JP1 |
| 1 | SCX_AUX_JMP | Mumo Footprints:JMP_CLSD | JP5 |
| 1 | SCX_PU_JMP | Mumo Footprints:JMP_CLSD | JP6 |
| 1 | SD0_GND_JMP | Mumo Footprints:JMP | JP9 |
| 1 | SD0_PU_JMP | Mumo Footprints:JMP_CLSD | JP4 |
| 1 | SDA_PU_JMP | Mumo Footprints:JMP_CLSD | JP2 |
| 1 | SDX_AUX_JMP | Mumo Footprints:JMP_CLSD | JP7 |
| 1 | SDX_PU_JMP | Mumo Footprints:JMP_CLSD | JP8 |
| 1 | TOP_PINS | Mumo Footprints:TopPins | J1 |
Questions
How big is the Mumo PCB?
It measures 18 × 13 mm and has 4 copper layers, 1.2 mm thick.
What parts does the Mumo use?
25 parts, built around the YF4032K76833T8188081, ICM-45686, QMC6309H and 0402WGF4701. 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 Mumo KiCad files?
From the kounocom/Mumo repository on GitHub, at the commit this page was made from: the board is Mumo.kicad_pcb and its schematic Mumo.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mumo design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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