Comments on: Arduino with PIR Motion Sensor

By: Sara Santos

Sara Santos — Mon, 17 Jun 2024 13:39:43 +0000

In reply to Steve R.

Hi.
Thanks for the suggestion.
I’ll take a look at those models.

Regards,
Sara

By: Steve R

Steve R — Sun, 16 Jun 2024 17:44:53 +0000

The PIR shown is used by many projects. I got a bunch of these to use for my ESPHome projects around the house, and all of them fail miserably, with false positives. Every few seconds with some of the sensors, to every few minutes for the better ones. If you search for this sensor, people complain about how useless they are, and the frustrations and waste of money. No amount of pull-up or pull-down resistors, added capacitors are going to fix it. I found a place they suggested to use the Panasonic EKMB or EKMC series PIR’s. You can buy these from DigiKey or Mouser. They are a little more. I got some of them, and they work perfectly. The one I got said the data pin would be VIN minus half a volt. So for my ESP32, I powered it with 3.3 volts so I wouldn’t overpower the data line to my ESP32.

By: Simon

Simon — Sun, 12 Nov 2023 11:00:13 +0000

Hello, I need an application with a very low sensitivity. I need a sensor that does not detect movement at a distance larger than 10 centimetres. Is it possible to do that using potentiometer or should I look for different type of sensor?

Thank you.

By: Maren Wallin Hansen

Maren Wallin Hansen — Thu, 02 Feb 2023 09:17:46 +0000

In reply to Rui Santos.

how do you do it?
i would like to know 🙂

By: Sara Santos

Sara Santos — Sun, 05 Jun 2022 16:13:18 +0000

In reply to Jack.

Hi.
If you have a multimeter, check the output from the PIR motion sensor. Check if it changes to LOW and HIGH on the right times. Also, double-check if everything is connected properly.
Regards,
Sara

By: Jack

Jack — Sun, 05 Jun 2022 13:24:47 +0000

Hello
I am using the code provided and followed the schematic but the LED stays lit all the time, no matter the position of the potentiometers. What could the problem be. It is all new parts from a beginner kit as I am a beginner. Not sure how to trouble shoot this. Any advice?
Thanks
jack

By: turuysal

turuysal — Fri, 23 Apr 2021 10:53:59 +0000

In reply to priyadarshini. With the rcwl-0516 sensor, it is more possible to find a creature that can move partially in the debris.

By: dierickx

dierickx — Fri, 09 Apr 2021 12:19:04 +0000

hi
good project
is someone able to help me on connecting an extra LDR (Light Detection) on the PIR Board ?
I try to but it is not working
thanks

By: shannon

shannon — Sun, 30 Aug 2020 14:38:10 +0000

Hi,can you make it work without the wire connecting to the arduino,and use batteries instead?

By: Sara Santos

Sara Santos — Mon, 22 Apr 2019 10:38:26 +0000

In reply to Mark.

Hi Mark.
Inside the following if statement, add the code to control the strip.
if (state == HIGH){
Serial.println(“Motion stopped!”);
state = LOW; // update variable state to LOW
//your code to control the strip

What type of strip do you want to activate? Addressable or just an RGB LED strip?
We have a tutorial on how to control an addressable RGB LED strip with Arduino: https://randomnerdtutorials.com/guide-for-ws2812b-addressable-rgb-led-strip-with-arduino/

If want to control a simple LED strip, we only have a tutorial with the ESP8266. You can follow this tutorial to figure out how to wire the strip to the Arduino (it shows how to do with an ESP32/ESP8266, but the logic is the same: https://randomnerdtutorials.com/esp32-esp8266-rgb-led-strip-web-server/

The code to control the strip is the same as controlling an RGB LED. You can read our tutorial about the RGB LED with Arduino here: https://randomnerdtutorials.com/electronics-basics-how-do-rgb-leds-work/

I hope this helps.
Regards,
Sara