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The temperatures sensor responds to the temperature surrounding its probe. The higher the temperature it senses the more signal it sends out.
HOW IT WORKS
The temperature sensor determines temperature via the IC that is located on top of the board. It communicates via I2C with an MCU located on the bottom of the board. The MCU gets a temperature reading in Celsius applies a hysteresis to the reading then converts it to Fahrenheit if necessary. The final determined temperature is converted to a number Bit readable analog value. Every 50mV on the output of the bitSnap represents a single degree in either Fahrenheit or Celsius. Since heat will conduct through the board itself there are slots around around the temperature sensor which provide thermal relief from board conductivity.
