Sensors

How to choose and configure temperature, presence and energy sensors.

• How to Wire an LDR Sensor to the ESP32: Diagram and Reading

  Published: 30 Sep, 2026 |  at  10:00 AM

  Sensors

  Learn how to wire an LDR photoresistor to the ESP32, read its value with the ADC and use it as the basis for an automation.

• DHT11 vs DHT22: Differences, Accuracy and Which to Pick

  Updated: 29 Sep, 2026 |  at  04:00 PM

  Sensors

  DHT11 vs DHT22: we compare range, accuracy, sampling rate, wiring and ESP32 readings to pick the right sensor for your project.

• PIR HC-SR501 Sensor: Datasheet and Wiring

  Published: 29 Sep, 2026 |  at  11:15 AM

  Sensors

  How to wire and configure a PIR HC-SR501 motion sensor with an ESP32: pins, power, trigger time, range, calibration and the most frequent errors.

• HLK-LD2410 mmWave Presence Sensor with Home Assistant

  Published: 29 Sep, 2026 |  at  11:00 AM

  Sensors

  How to use the HLK-LD2410 mmWave sensor with ESPHome and Home Assistant: wiring, presence zones, configuration and common errors.

• BME280 Sensor: Datasheet, I2C Wiring and Calibration

  Published: 29 Sep, 2026 |  at  10:45 AM

  Sensors

  A BME280 guide with the datasheet, I2C wiring for the ESP32, ESPHome configuration, I2C addresses, calibration checks and the mistakes to avoid.