BarkBox! Simple Noise & Intrusion Detection Device

BarkBox! This is a device that simply listens for loud sounds, like barking, and looks for motion present and records the events. I created this project because one day I came home to my dog barking and thought how long had he been barking. I could hear him down the hall when I walked into the building. I live in condos btw so I don’t need him barking all day long and making my neighbors upset. Or more to the point why is he barking??? So I thought, “Hey, I got these mic boards laying around from a sensor kit; lets see if I can catch if he is doing it a lot! Oh and I got this PIR motion detector, lets slap that on also!” When i created the first iteration it only had one mic board for sound detection but I was having problems with it either being way too sensitive or not sensitive enough. I couldn’t find the ‘sweet spot’. So my solution was to not only add another mic, but to add adjustable thresholds for when they consider the reading to in fact be barking. I have one mic board turn pretty sensitive but with a higher threshold and the other with low gain and a lower threshold. It works pretty good together. Also on the first iteration I had a lot of problems with the mics picking up the radio rx/tx because it was so close to the esp8266 module. It also created voltage fluctuations slightly which wasn’t helping. I added 2 capacitors & lowered the esp8266 tx power and it almost got rid of it all. Just recently when I was testing a couple new ESP8266-01S chips, i noticed that the “S” chips completely eliminated the noise from the tx signal & voltage fluctuations.”


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