Comprehensive Guide to the HW-416-B PIR Motion Sensor The is a compact, highly efficient Passive Infrared (PIR) sensor module widely used in DIY electronics, security systems, and automated lighting projects . Often categorized alongside the popular HC-SR501, the HW-416-B is favored for its smaller footprint and reliable performance in detecting human or animal movement.
Digital output. High (3.3V) when motion is detected; Low (0V) when idle. GND: Ground connection. 3. Onboard Adjustments hw-416-b pir sensor datasheet
The HW-416-B PIR sensor can be used in various applications, including: HW-416-B Comprehensive Guide to the HW-416-B PIR Motion
As soon as he powered it on, the sensor went haywire. The serial monitor scrolled "Motion detected!" in a frantic loop, even though the room was empty. Remembering a tip from an old forum, Leo checked the distance; the sensor was too close to his Raspberry Pi, and the electromagnetic noise was causing "odd behavior". He moved the sensor five feet away, but it still stayed "HIGH" for way too long. Operating Voltage: 4
The PCB is double-layered with a ground plane to reduce noise. The FR-4 material ensures decent thermal stability, though prolonged exposure to direct sunlight or heat sources can trigger false positives (a common trait of all PIR sensors).
is a common Passive Infrared (PIR) motion sensor module, widely recognized as an equivalent or specific variant of the
| Parameter | Min | Typical | Max | Unit | | :--- | :--- | :--- | :--- | :--- | | Supply Voltage (VCC) | 4.5 | 5.0 | 20 | V | | Output Current (sink/source) | – | 10 | 100 | mA | | Output Logic High | 2.4 | 3.3 | 3.5 | V | | Output Logic Low | 0 | 0.4 | – | V | | Standby Current | 20 | 45 | 60 | µA | | Warm-up Time (initial power-on) | – | 30 | 60 | sec |