Tag: hc-sr501

Articles tagged "hc-sr501".

• 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.