Chapter 5 · ESP32 Sensors 15 min
ESP32 Sensors
Hook up DHT22, BMP280, PIR and more - and pipe their values into LVGL widgets.
The pattern is the same for every sensor: wire it, add a sensor block, react in
on_value to update an LVGL widget. Three examples below cover the three common buses you'll meet. Sensors
DHT22
Measures: Temperature & humidity
Bus: 1-wire (single GPIO)
Difficulty
BMP280
Measures: Pressure & temperature
Bus: I²C (2 pins, shared)
Difficulty