UPDATE: Replaced my PIR-Sensor with a Doppler Microwave Sensor.

Philly

Hi thank you for responding, I recently bought a soldering iron and soldered the pins to the sensor and I’m still having trouble having it turn on the smart mirror. I’ve attached a picture, I don’t think the module is the problem and made sure the cables are attached to the right pins, could it be the soldering? Sorry to bother I’m new at this.

Fozi

@Philly From what I see in the picture the soldering seems to be OK, but I’m not sure you wired it correctly on the GPIO. The picture is somewhat blurry, so I can’t recognize it well enough.

The red wire should go to the first right pin, which provides +5V. From the picture it seems to go to the first left pin, which provides only 3.3V.
The black wire seems to go to the second right pin, which also provides +5V. It should go to the third right pin for GND.
Finally, the brown wire appears to go to the third left pin, which is provides a SCL signal (serial clock) and is reserved for I2C. Don’t use that, but the forth left pin, which is a digital I/O.
Please check the wireing again according to my description and adjust also the config.js accordingly.

{
			module: 'MMM-PIR-Sensor',
			disabled: false,
			config: {
				sensorPin: 4,
				powerSavingDelay: 30, // (seconds) how long the monitor will be turned on

			}
		},

Philly

@Fozi I rechecked my wires and confirmed they were wired on the correct pins although the picture I sent does look off, the red wire is on the 5v, black is on gnd, and the brown wire is on GPIO pin 7. The config.js is also configured accordingly but when I npm start the Magic Mirror a blank screen continues to show. So I tried using the MMM_PIR module instead and got the same results, a blank screen. Not sure why the sensor’s not working

Ghost2000

@Fozi
You wrote that you are using a double sensor is that this one?

zerodis-HB100-Mikrowelle-Sensor-Modul-Doppler-detecor

Fozi

@Ghost2000 I use this one https://amzn.to/35SEYd3

Ghost2000

@Fozi
then did you connect two?

Fozi

@Ghost2000 no, it is a single sensor. You probably got irritated by the noun „Doppler“. This has nothing to do with double or to similar. The sensor uses an effect which was discovered by the physicist Christian Doppler. See also https://en.m.wikipedia.org/wiki/Doppler_effect

Ghost2000

eah right, now I see

MajorC

Hi @Fozi ,

just to make sure that I am on the right way:

Buy a RCWL-0516 module
Wire the module to my Raspberry Pi 4
Install @Bugsounet MMM-NewPIR on my MM

That’s it? Or did I miss something?
My MM is not a mirror, more a wall-mounted picture frame with some nice to have information on it. I would like to have the monitor turned off, if nobody is in the room.

Thank you,

Christian

Fozi

@MajorC yeah, that are the steps to go. The RCWL-0516 module is a 1:1 replacement of the common IR sensors usually used. MAke sure to follow also the instructions I wrote (see link in my signature).