ESP32 Temperature Monitoring Module
Budget: $30 – $250 USD
The goal is to design a high-voltage, industrial-grade PCB board connecting to 8 external temperature/humidity
1. Core Components & Specifications:
ESP32-C3-MINI-1-N4
TCA9548A I2C Multiplexer
INMP441 microphone
8x JST-XH 4-Pin Vertical Connectors (2.5mm pitch).
LM5164 Buck Converter Must convert to 5V
Secondary Power: AP2112K-3.3TRG1 LDO (SOT-23-5). Converts 5V to 3.3V
2- Mechanical & Layout Constraints
All 8 JST-XH ports should be aligned along one edge
USB Port: One USB-C port for programming and data transfer.
Audio Isolation: Keep the INMP441 microphone on a separate ground plane
Mounting: Include 4x M3 mounting holes
3-Deliverables:
Schematic (PDF and Source files).
PCB Layout (Gerber files, Drill files).
Bill of Materials (BOM) with LCSC/Digi-Key part numbers.
3D STEP file of the assembled board.
1. Core Components & Specifications:
ESP32-C3-MINI-1-N4
TCA9548A I2C Multiplexer
INMP441 microphone
8x JST-XH 4-Pin Vertical Connectors (2.5mm pitch).
LM5164 Buck Converter Must convert to 5V
Secondary Power: AP2112K-3.3TRG1 LDO (SOT-23-5). Converts 5V to 3.3V
2- Mechanical & Layout Constraints
All 8 JST-XH ports should be aligned along one edge
USB Port: One USB-C port for programming and data transfer.
Audio Isolation: Keep the INMP441 microphone on a separate ground plane
Mounting: Include 4x M3 mounting holes
3-Deliverables:
Schematic (PDF and Source files).
PCB Layout (Gerber files, Drill files).
Bill of Materials (BOM) with LCSC/Digi-Key part numbers.
3D STEP file of the assembled board.