4 layers122.3 × 96.1 mm
2 layers25 × 19 mm
Photogrammetry with sensor fusion
- Size
- 25 × 19 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 24
- Pads
- 65
- Tracks, vias
- 115, 7
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 9 Mar 2024
- Updated
- 7 Nov 2026
Overview
Imu is an open-source printed circuit board by furbrain, from the furbrain/Cyclops repository on GitHub. It is a 2-layer board of 25 × 19 mm with 18 parts on 24 nets, routed with 115 tracks and 7 vias.
It is built around the ICM-20948, PCA9306D and XC6206P182MR. Its parts include 5 capacitors, 5 resistors, 3 ICs and 1 connector. It belongs with the sensors and measurement boards of this library.
Main components
3
ICM-20948
QFN-24(3x3)-40℃~+85℃ 0.5KB 1.71V~3.6V 16bit 8uA Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps QFN-24(3x3) Accelerometers ROHSTDK InvenSenseAccelerometers
PCA9306D
SO-8-40℃~+105℃ 1 1.8V~5.5V 1V~3.6V 2 2Mbps Automatic direction detection、Output enable high-impedance Bidirectional Level translator Open-drain SMBus、I2C SO-8 Translators, Level Shifters ROHSNXP SemiconductorsTranslators, Level Shifters
XC6206P182MR
SOT-23-25℃~+80℃@(Ta) 1 1.8V 250mA 280mV@(50mA) 40dB@(1kHz) 7uA 8V Fixed Over Current Protection、Short Circuit Protection Positive SOT-23 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSUMWVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdCyclops
Cave surveying with a camera and IMU. Under development
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 2k2 | Resistor_SMD:R_0402_1005Metric | R2, R3, R4, R5 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C4, C5 |
| 1 | 200k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | Conn_01x04_Pin | Connector_FFC-FPC:JUSHUO_AFA07-S04FCA-00_1x4-1MP_P1.0mm_Horizontal | J1 |
| 1 | ICM-20948 | Sensor_Motion:InvenSense_QFN-24_3x3mm_P0.4mm | U1 |
| 1 | PCA9306 | Package_SO:VSSOP-8_2.3x2mm_P0.5mm | U2 |
| 1 | XC6206P182MR | Package_TO_SOT_SMD:SOT-23-3 | U3 |
Questions
How big is the Imu PCB?
It measures 25 × 19 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Imu use?
18 parts, built around the ICM-20948, PCA9306D and XC6206P182MR. 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 Imu KiCad files?
From the furbrain/Cyclops repository on GitHub, at the commit this page was made from: the board is pcb/imu/imu.kicad_pcb and its schematic pcb/charger_mod/charger_mod.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Imu design in my own project?
Its repository states no licence, so its author keeps all rights: ask furbrain before reusing the design.
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