Hi, did anyone try to detect washing machine or dryer emd sound with OpenHAB? My raspberry Pi running the OH is in the same room with those machines so I thought it might be good idea to do it that way. The machine emits characreristical tone when ended. I tried to search but I didn’t find anyth…

Besides power meters/plugs, you could use microphones on the Pi (?) or maybe better a DIY ESP to detect noises, example .

Maybe you could hook up something like this? Sound Detector Hookup Guide - SparkFun Learn I’ve never tried it, but it looks interesting. You might prefer a tone detector, not a sound detector, but this one looks simple and cheap and might be worth a try.

This may be a start: [image] A low cost decibel meter to use on openHab DIY I have made a low cost dB meter that almost any-one can build. This sound meter sends the data by MQTT so it can be easely used in openHAB. The costs are less then € 7.50 [dBmeterESP…

Thanks @chrismast , I had a look but I don’t think that is what I am looking for. I would need to detect the sound tone pattern, not just the noise. Sound detection only might for example detect the centrifuge noise and trigger the output. @Seaside , I know that addon, I already use it.

[image] jswim788: You might prefer a tone detector Yes, the laundry room can get noisy so false triggers can be expected unless there is detection of the chime tone [image] hafniumzinc: I’d just stick a power sensor inline on the power cable and call it a day I would probably go that …

I think I’ve heard of people using vibration sensors, but have no experience with them myself. I’d also just go with a power sensor, unless you’re just doing it for the fun and adventure. :wink:

You can actually detect sound patterns via code, but I agree with the previous posters, power meters are way easier. Would go the DIY way if you want to learn and tinker only.

The tone is much more interesting than the power meter. Look at this: Sound Whistle Tone Frequency Picker LM567 - ElectroDragon . It’s based on the LM567 (an old National part since acquired by TI). You can find some info around the web. Look at this: Tone Detector Now, we are assuming that the …

[image] jswim788: Now, we are assuming that the “tone” your washing machine makes is a single frequency or close to it. The circuit above will be looking for a single frequency. That’s probably good enough. Darko said that it’s a pattern, so I don’t think it’s a single tone/frequency. [im…

Washing machine ended beep detection?

Setup, Configuration and Use Scripts & Rules

Seaside (Seaside) March 16, 2022, 11:27am 3

I would still suggest you do this with a power plug, zigbee, zwave or similar.
I have an add-on that makes this easier, it also possible to do the logic.yourself in rules.