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References: Temperature, Humidity, and Distance Sensors

  1. Temperature measurement - Wikipedia - Explains how electronic sensors convert heat into readable values. Background for this chapter's DHT11, DHT22, and BME280 temperature work.

  2. Hygrometer - Wikipedia - Describes instruments that measure humidity and how capacitive sensors detect moisture. Reinforces the chapter's coverage of humidity sensing.

  3. Time of flight - Wikipedia - Explains how measuring travel time of a signal yields distance, the principle behind ultrasonic and laser sensors. Directly supports the chapter's distance-sensor section.

  4. Make: Sensors - Tero Karvinen, Kimmo Karvinen & Ville Valtokari - Maker Media - A hands-on cookbook of sensor projects, including temperature, humidity, and distance, that mirrors the experiments in this chapter.

  5. Environmental Monitoring with Arduino - Emily Gertz & Patrick Di Justo - Make Community - Practical projects measuring temperature, humidity, and more; the concepts transfer directly to the MicroPython sensors in this chapter.

  6. DHT11 & DHT22 Sensor Tutorial - Last Minute Engineers - A detailed walkthrough of how the DHT sensors work, with wiring diagrams and code. Reinforces the chapter's temperature/humidity examples.

  7. Adafruit BME280 Sensor - Adafruit - Guide to the I2C BME280 that reads temperature, humidity, and pressure. Directly supports the chapter's multi-value weather sensor.

  8. HC-SR04 Ultrasonic Sensor Tutorial - Last Minute Engineers - Explains the echo/trigger timing that produces a distance reading, matching the chapter's HC-SR04 math.

  9. VL53L0X Time-of-Flight Sensor - STMicroelectronics - Official product page and datasheet for the laser distance sensor used in this chapter. The authoritative source for its specifications.

  10. machine.I2C - MicroPython - Reference for the I2C interface used to read the BME280 and VL53L0X. Connects the chapter's sensors to MicroPython code.