8. Radiation Shield Wiring
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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.