PCB 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