Opla IoT Kit - Home Security Project - Movement Alarm not working

Official Hardware MKR Family MKR WiFi 1010
1

Hello,

The Movement Alarm (PIR sensor) is not working for me. The others two (Light, Shake) work fine. The sensor is recognised as digitalRead(pir) returns 1. Also when I disconnect the PIR from the carrier the alarm is triggered. However no movement is detected at all.

Any advice?

Thank you,
Alexandre

2

So for me this sensor was not working until I made some changes and looked at the serial output to figure out what was going on.

First I played with the potentiometers on the side of the sensor. I adjusted them until I saw the value change on the serial output whenever I moved around the sensor. After I made these changes, if I move around the sensor the value will briefly change from 0 to 1 and then back to 0 once movement has stopped.

Because the sensor value is changing to 1 when it detects movement, I changed the code to check for HIGH:

//movement alarm, can be activated from cloud
if (movement_alarm == true) {
if (pirState == HIGH) {
movement_event = true;
}

Now it seems to work pretty well for me.

3

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