Practical Application of One‑Wire Communication: Full Breakdown of DHT11 Device Principles, Protocol
This paper introduces DHT11 single-wire communication timing, 40-bit data format, MicroPython driver with pulse capture and checksum, and Pico hardware test, pl
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Project description
【Preliminary Note】The original hardware example in this article was written based on the RP2040. The actual hardware used in this hands-on demonstration features the W55RP20 as the main controller chip. The circuit logic and UF2 flashing operation principles are universally applicable, with only the main controller model differing. The original chip model mentioned in the circuit descriptions below is provided for reference purposes only. DHT11 Sensor Temperature and Humidity Reading The DHT11 digital temperature and humidity sensor is a temperature and humidity composite sensor with…
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