4 layers99.9 × 99.9 mm
Hub
BCIT-BAJA/BCIT-BAJA-DAQ
The telemetry system for BCIT-BAJA car, collects strain across suspension components of car to allow BAJA to optimize material and reinforce weak areas of suspension.
101 parts
2 layers22 × 40 mm
Sensor interface
911RSR/RaceTemp_BLELike RaceTemp, but using STM32WB with integrated BLE instead of UART + an RF module.
- Size
- 22 × 40 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 25
- Pads
- 108
- Tracks, vias
- 119, 63
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 28 Aug 2025
- Updated
- 21 Aug 2026
Overview
Sensor interface is an open-source printed circuit board by 911RSR, from the 911RSR/RaceTemp_BLE repository on GitHub. It is a 2-layer board of 22 × 40 mm with 35 parts on 25 nets, routed with 119 tracks and 63 vias.
It is built around the MAX31856MUD+T, 74LVC1G14Z and CRCW08051M00FKEAC, with the CC0805JRNPOCBN100, C0805C222KAGECAUTO and BAT54S among its other parts. Its parts include 13 capacitors, 10 resistors, 3 connectors, 2 ICs and 1 diode. It belongs with the interfaces and adapters and radio and wireless boards of this library.
Main components
6
MAX31856MUD+T
TSSOP-14-40℃~+125℃ 10uA 19 3V~3.6V Programmable gain、Digital filtering、Built-in temperature sensor SPI Thermocouple-to-Digital Converter TSSOP-14 ADCs/DACs - Special Purpose ROHSMaxim Integrated (Analog Devices)ADCs/DACs - Special Purpose
74LVC1G14Z
SOT-553-40℃~+125℃ 1 1.2V~3.33V 1.65V~5.5V 200uA 32mA 32mA 6.5ns@5V,50pF 74LVC 750mV~2.35V Power shutdown protection、Noise suppression function Push-pull Schmitt trigger SOT-553 Inverters ROHSDiodes IncorporatedInverters
CRCW08051M00FKEAC
0805-55℃~+155℃ 125mW 1MΩ Thick Film Resistor ±1% ±100ppm/℃ 0805 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount
CC0805JRNPOCBN100
080510pF 1kV ±5% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMTC0805C222KAGECAUTO
08052.2nF 250V C0G ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSKEMETMultilayer Ceramic Capacitors MLCC - SMD/SMT
BAT54S
SOT-231 Pair Series Connection 1V@100mA 200mA 2uA@25V 30V 600mA SOT-23 Schottky Diodes ROHSMDDSchottky Diodes
README
HW/sensor_interface/readme.mdA sensor interface PCB designed and ordered on NiNo's 22 years birthday.
The PCB has four inputs:
- RPM -- engine speed
- EGT -- exhaust gas temperature
- NTC1 -- water temperature
- NTC2 -- cylinder head temperature
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100n | Capacitor_SMD:C_0805_2012Metric | C3, C5, C11, C12, C13 |
| 4 | 10n | Capacitor_SMD:C_0805_2012Metric | C6, C7, C9, C10 |
| 4 | 1k | Resistor_SMD:R_0805_2012Metric | R5, R7, R8, R9 |
| 3 | 1M | Resistor_SMD:R_0805_2012Metric | R1, R3, R10 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R4, R6 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C4, C8 |
| 2 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2 |
| 2 | TestPoint | TestPoint:TestPoint_THTPad_4.0x4.0mm_Drill2.0mm | TP1, TP2 |
| 1 | 10p | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 1k @ 100 MHz | Resistor_SMD:R_0805_2012Metric | FB1 |
| 1 | 2.2n | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 47k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 74LVC1G14 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U1 |
| 1 | BAT54S | Package_TO_SOT_SMD:SOT-23 | D1 |
| 1 | Berg | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Vertical | J1 |
| 1 | MAX31856 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U2 |
| 1 | Screw_Terminal | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal | J4 |
| 1 | Screw_Terminal_01x04 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-4-2.54_1x04_P2.54mm_Horizontal | J2 |
| 1 | TestPoint | TestPoint:TestPoint_THTPad_D4.0mm_Drill2.0mm | pickup1 |
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Questions
How big is the Sensor interface PCB?
It measures 22 × 40 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sensor interface use?
35 parts, built around the MAX31856MUD+T, 74LVC1G14Z, CRCW08051M00FKEAC and CC0805JRNPOCBN100. 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 interface KiCad files?
From the 911RSR/RaceTemp_BLE repository on GitHub, at the commit this page was made from: the board is HW/sensor_interface/sensor_interface.kicad_pcb and its schematic HW/sensor_interface/sensor_interface.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sensor interface design in my own project?
Its repository states no licence, so its author keeps all rights: ask 911RSR before reusing the design.