8. Radiation Shield Wiring

The radiation shield houses integrated environmental sensors to ensure accurate readings:

• Temperature: Monitored via the SHT31D & MCP9808 which measures ambient air temperature using a precision thermistor.

• Relative Humidity: Detected by the SHT31D, which calculates moisture levels via capacitance changes in a polymer layer.

• Atmospheric Pressure: Measured by the BMP390, a piezoresistive sensor that converts pressure changes into digital signals.

Wiring: All three sensors connect via I2C (shared SDA/SCL lines) to minimize wiring complexity. The radiation shield’s passive ventilation design protects sensors from direct sunlight, precipitation, and debris while maintaining airflow for precision.

Instruction Slides

Radiation Shield Wiring - Slides