PCB Design for Sensors


Done — I generated the first PCB preview for Pi Zero Sensor HAT.
What’s included:
  • Bottom-mounted 40-pin Raspberry Pi Zero header
  • Top-side JST-PH 4-pin connector for the Waveshare MLX90640
  • Top-side placeholder headers for SCD41, PIR, IMU, and OLED
  • Board outline set to 65 mm × 30 mm, with parts placed cleanly
Open items:
  • The MLX90640 is wired, but the board is not routed yet.
  • SCD41, PIR, IMU, and OLED headers are still placeholders until you provide exact pin orders.
  • Review shows expected airwires/floating pins because those modules are not fully wired yet.
Suggested next steps:
  1. Send the pin order for SCD41, PIR, IMU, and OLED.
  2. Confirm if MLX90640 VCC should use 3.3 V or 5 V.
  3. Ask me to wire the remaining headers.
  4. After wiring, I can route the PCB.
I NEED 10*10CM BOARD
I’ll resize the PCB outline to 100 mm × 100 mm and re-place the existing Pi/sensor connectors so you can view it on the larger board.
Done — the PCB is now 100 mm × 100 mm.
I also re-placed the parts for the larger board:
  • Pi 40-pin header remains on the bottom
  • MLX90640 JST connector is on the top edge
  • Other sensor headers are spread out on the top with more space
Open item: the board still needs the remaining sensor pinouts before I can finish wiring and route it.
Wire, route, review
Use 3.3V thermal
Wire standard I2C
Add silkscreen labels
Run design review

Schematic of Pi Zero Sensor HAT

Pi Zero Sensor HAT

Pi Zero Sensor HAT thumbnail