4 layers39 × 39 mm
OneInchEye
will127534/OneInchEye
A One Inch CMOS sensor (IMX283) camera board designed for Raspberry Pi
94 parts355MIT
6 layers50 × 50 mm
Sensor board
dale-lim29/Hardware_IMU_Array_Sensor1The PCB is designed with a 6-layer stackup:
- Size
- 50 × 50 mm
- Copper layers
- 6
- Thickness
- 1.57 mm
- Parts
- 142
- Nets
- 111
- Pads
- 521
- Tracks, vias
- 526, 375
- Pours
- 32
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 2 Aug 2025
- Updated
- 4 Aug 2025
Overview
Sensor board is an open-source printed circuit board by dale-lim29, from the dale-lim29/Hardware_IMU_Array_Sensor repository on GitHub. It is a 6-layer board of 50 × 50 mm with 142 parts on 111 nets, routed with 526 tracks and 375 vias.
It is built around the ICM-42688-P. Its parts include 61 resistors, 50 capacitors, 18 ICs, 1 diode and 1 connector. It belongs with the sensors and measurement boards of this library.
Main components
1README
README.md16x IMU Sensor Board
This board based on use IMU sensor (ICM42688-P) and Multiplexer (TCA9548A)
IMU Array Sensor Block Diagram
IMU Array Sensor Structure
The PCB is designed with a 6-layer stackup:
This multi-layer design ensures proper signal integrity, power distribution, and electromagnetic compatibility for the IMU array sensor system.
PCB Design Overview
Complete PCB Layout:
PCB Layer Images
Layer 1:
Layer 3:
Layer 4:
Layer 6:
Note
Firmware Check
To verify the hardware connectivity of the IMU array sensor board, upload the provided firmware to your STM32 microcontroller:
- Binary file:
fimware_check/STM32F401.bin - Hex file:
fimware_check/STM32F401.hex
Upload either the .bin or .hex file to your STM32F401 microcontroller to test and validate the hardware connectivity of all IMU sensors in the array. This firmware will help you verify that:
- All IMU sensors are properly connected
- The I2C multiplexer (TCA9548A) is functioning correctly
- Communication with each sensor channel is working as expected
Expected Output
The expected result shows channel 7 of both multiplexers working correctly with sensors at address 0x68, demonstrating proper hardware connectivity and communication with the IMU array.
References
Parts
142| Qty | Value | Footprint | References |
|---|---|---|---|
| 36 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R14, R15, R17, R18, R20, R21, R23, R24, R26, R27, R28, R29, R30 +20 |
| 24 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R11, R12, R16, R19, R22, R25, R34, R35, R36, R37, R46, R47, R48, R49, R58 +8 |
| 18 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C12, C15, C16, C17, C18, C27, C28, C29, C30, C39, C40, C41, C42 +2 |
| 16 | 10nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4, C7, C10, C13, C19, C20, C21, C22, C31, C32, C33, C34, C43, C44, C45, C46 |
| 16 | 2.2uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C8, C11, C14, C23, C24, C25, C26, C35, C36, C37, C38, C47, C48, C49, C50 |
| 16 | ICM-42688-P | Sensor_board:PQFN50P300X250X97 | U3, U4, U5, U6, U7, U8, U9, U10, U11, U12, U13, U14, U15, U16, U17, U18 |
| 7 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP3, TP4, TP5, TP6, TP7, TP8, TP9 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 2 | TCA9548APWR | Sensor_board:TSSOP24_1.2mm | U1, U2 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13 |
| 1 | Conn_01x14 | Sensor_board:1.25-12P WT | J1 |
| 1 | RED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
Questions
How big is the Sensor board PCB?
It measures 50 × 50 mm and has 6 copper layers, 1.57 mm thick.
What parts does the Sensor board use?
142 parts, built around the ICM-42688-P. 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 Sensor board KiCad files?
From the dale-lim29/Hardware_IMU_Array_Sensor repository on GitHub, at the commit this page was made from: the board is Sensor_board.kicad_pcb and its schematic Sensor_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sensor board design in my own project?
Its repository states no licence, so its author keeps all rights: ask dale-lim29 before reusing the design.
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