2 layers15 × 11.2 mm
4 layers47.8 × 23.1 mm
Soar sense
MaxBaex/hw_sensePCB design for tiny temperature and humidty sensor
- Size
- 47.8 × 23.1 mm
- Copper layers
- 4
- Thickness
- 4.69 mm
- Parts
- 58
- Nets
- 56
- Pads
- 203
- Tracks, vias
- 662, 167
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 9 Jan 2022
- Updated
- 19 Sep 2024
Overview
Soar sense is an open-source printed circuit board by MaxBaex, from the MaxBaex/hw_sense repository on GitHub. It is a 4-layer board of 47.8 × 23.1 mm with 58 parts on 56 nets, routed with 662 tracks and 167 vias.
It is built around the MAX3051EKA, SHT35-DIS-F and SPX3819M5-L-3-3. Its parts include 19 capacitors, 14 resistors, 11 diodes, 7 connectors and 4 ICs. It belongs with the sensors and measurement and interfaces and adapters boards and the STM32 boards of this library.
Main components
3
MAX3051EKA
UncategorisedMaxim Integrated Products
SHT35-DIS-F
DFN-8_2.5X2.5DFN-8_2.5X2.5 New Arrivals ROHSSensirionUncategorised
SPX3819M5-L-3-3
SOT-23-5-40℃~+85℃@(Ta) 1 20V 3.3V 420mV@(100mA) 500mA 5uA 70dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdPCB design for sense module
Minimalistic very small temperature and humidity sensing device with CAN interface. Could also be used for other CAN bus attached sensing tasks.
Facts
- SWD interface
- STM32F103 48LQFP 8 MHz Crystal
- CAN transceiver: MAX3051EKA+T
- 5 to 16V power supply with 3.3V LDO: SPX3819M5-L-3-3/TR
- Temperature and Humidity sensing with SHT35-DIS-B or SHT31
- 4 analog inputs, SPI, 2 I2C and UART
- Boot0 pin available for flashing via UART
- Pcb size 47.7mm x 23.2mm
3D Preview
TODO
- backside solder pads for differential pressure package
- more backside connectors
- review and feedback
- are the cable solder connections the right choice?
- make sensor voltage switchable!
- add some signal leds
Parts
58| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 100n | Capacitor_SMD:C_0603_1608Metric | C2, C6, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19 |
| 8 | D_TVS | Diode_SMD:D_SOD-323 | D5, D6, D7, D8, D9, D10, D11, D12 |
| 7 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R9, R10, R12, R13, R14, R15 |
| 3 | 4k7 | Resistor_SMD:R_0603_1608Metric | R4, R5, R6 |
| 3 | Conn_02x02_Top_Bottom | OWN_Parts:pcb_edge_2_2 | J3, J4, J5 |
| 3 | Conn_02x03_Top_Bottom | OWN_Parts:pcb_edge_2_3 | J1, J6, J7 |
| 2 | 10u | Capacitor_SMD:C_0603_1608Metric | C1, C7 |
| 2 | 30p | Capacitor_SMD:C_0402_1005Metric | C3, C5 |
| 2 | LED_Small | Diode_SMD:D_0603_1608Metric | D1, D2 |
| 2 | R200 | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 1 | 10n | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 120R | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 27k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 8MHz | Crystal:Crystal_SMD_5032-4Pin_5.0x3.2mm | Y1 |
| 1 | Conn_01x06 | Connector_Molex:Molex_PicoBlade_53048-0610_1x06_P1.25mm_Horizontal | J8 |
| 1 | D_Small | Diode_SMD:D_SOD-323 | D3 |
| 1 | FerriteBead_Small | Inductor_SMD:L_0805_2012Metric | FB1 |
| 1 | MAX3051 | Package_TO_SOT_SMD:SOT-23-8_Handsoldering | U4 |
| 1 | SHT35-DIS | Sensor_Humidity:Sensirion_DFN-8-1EP_2.5x2.5mm_P0.5mm_EP1.1x1.7mm | U3 |
| 1 | SPX3819M5-L-3-3 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | STM32F103CBTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1 |
Questions
How big is the Soar sense PCB?
It measures 47.8 × 23.1 mm and has 4 copper layers, 4.69 mm thick.
What parts does the Soar sense use?
58 parts, built around the MAX3051EKA, SHT35-DIS-F and SPX3819M5-L-3-3. 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 Soar sense KiCad files?
From the MaxBaex/hw_sense repository on GitHub, at the commit this page was made from: the board is pcb/soar_sense.kicad_pcb and its schematic pcb/soar_sense.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Soar sense design in my own project?
Its repository states no licence, so its author keeps all rights: ask MaxBaex before reusing the design.
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