PIR Sensor does not work, need config support

ESPHome
1

I put everything on a breadboard for testing and added the sensor config to esphome, but it does not work. I have no idea if the esp config is wrong, the breadboard layout or if i used the wrong pin on the hardware.

how do you know what gpio config and esphome config you need for the PIR Sensor EKMC1603113? I can not find it in esphome documentation

binary_sensor:
  - platform: gpio
    name: mmwave_in_bedroom
    pin:
      number: GPIO22
      mode: INPUT_PULLDOWN
  - platform: gpio
    pin: GPIO26
    name: "PIR Sensor"
    device_class: motion

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Any ideas or tips why it does not work or how to test?

2
1 Like
3

In your wiring I see only two wires from the sensor.
You need VCC, GND and OUT.
Connect OUT to the nodemcu pin and check the power supply according to the sensor data sheet

3 Likes
4

So i got the PIR sensor working but it switches very fast from on to off and back, nothing is moving in front of it. Any idea?

5

ok looks like it also switches between on and off when PIR Sensor is not connected to the board :frowning:

6

Is it connected to 5v or 3.3v ?
It should be more stable on 5v :wink:

7

tried both but no difference in stability. But I also wonder why the status changes fast when the Sensor is not connected

8

Possibly need a pullup/down

9

Yeah, thats wierd.
I just connected mine last night, and also have the flickering in “detected/clear” But I have not tried to see what happens if i disconnect the “out”. Just figured it was due to 3.3v and not 5v. (will try both when I get home)

10

What do you mean with pull-up/down?

11

Did you figure this out?

12

Did you try this?

binary_sensor:
  - platform: gpio
    name: mmwave_in_bedroom
    pin:
      number: 22
      mode: INPUT_PULLDOWN
  - platform: gpio
    name: "PIR Sensor"
    device_class: motion
    pin:
      number: 26
      mode: INPUT_PULLDOWN

If it doesn’t work, put a 10k resistor between gnd and the pin 26. this will do a pulldown and prevent fluctuation between on and off.

13

This worked!
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