This is genuinely a cat detecting poop neutralizer. It's designed to either mount in the wall with a little binic cap, stick on thing, or be hung in the vicinity of your cat's literat. Tre And when it detects movement with the passion for detector, it holds off. It detects it, but it actually triggers but holds off until it detects movement as gone.

and then it turns on a little tiny ozone generator at the bottom to neutralize the odor of the poop. So it does have other applications. It is rechargeable. It's got a very generous CU I've already tested it.

2,700 millia cell. It's got a micro USB charge port and the button for activate. In fact, if I activate this right now, it's probably not. It's a a blue sleep LED has lit so that uh, no, it's not going to detect well.

it's not going to trigger because it is detecting movement right? I shall turn that back off right? Let's open it. That's what we like to do here. So this came from eBay I believe I Got it a while ago, but I was making so many things about ozone at the time I thought I'd better hold off in case I cause fatigue by making too many videos about the same subject that must have been during the pandemic. then.

So once we get inside, we see a juicy 18650. We see the high voltage module. We see the circuit Tre which I shall remove and analyze. What's this little uh, what's this little thing around it for? That's odd H And we've got the uh actual emitter here which is the high voltage emitter bit that generates the ozone.

So I shall take this circuit board out of this and we shall explore the circuitry. I'll do that right now one moment. please. Reverse engineering is complete.

Let's explore so we'll take a look at the back of the circuit board first. So I shall Zoom down onto this for a better view zooming. That should do it on the back, there's not much to see, just a few bus bar tracks for power, we've got the button for selecting well, turning on and off. I don't think there are the other modes I think it's just basically on and off and we've got the USB connector micro USB connector.

On the other side, we have more juicy contents. We have the input Port that that's the USB port uh, decoupling capacitors. We've got a classic 4056 charge chip for the Lithium cell which is in a connector. We've got a 3.3 Vol 662k voltage regulator with decoupling capacitor and we've got the ozone connector uh with one of the connections switch to the negative via this A9t mosfet.

We have the microcontroller uh, couple of LEDs and the NS 612 Passion Frame a detection device which comines a lot of cry and lets you set the sensitivity and the time delays just by the way the pins are connected or in the case of uh, the sensitivity of this one, it's set Aid sensitivity by using a voltage divider on one of the input pins. Okay, let's get the schematic which uh makes more sense then I'll show you the the ozone generating tip if you will. Here's a USB port decoupling capacity the input straight to the 4056 Uh charge controller. It's got a 2K resistor which sets roughly 500 milliamps which is quite low charge current for Uh.

This cell which is labeled 2,600 Milah and I tested it uh when I first got this just a how much charge it took and it showed that it is a pretty decent cell so that's going to take a while to charge at that current. uh the Lithium cells in its connector. It then goes over to the other connector for the Ozone G generator, but it also has a voltage regulator producing a stable 3.3 volt. Supply The reason for that is because these pass in Fored detectors require a very stable Supply and it just makes sense to do that.

There is a little decoupling capacitor on that there is a voltage divider two 1 Mega resistors to set a midpoint voltage. These passion Fored detectors you can set the time delay between 0 volts and the 3.3 volts and the sensitivity between 0 volts and 3 3 volts. and if you whatever voltage you put in that sets the range of that unit so they've set it to a mid sensitivity which is quite good because they don't want to detecting too far given it is just designed for localized areas. The time is pulled to the Zer volt rail, which means that that is set to the shortest time which is about 2 seconds, which is all the microcontroller needs to do its business.

There's a 1K resistor from the output of that Uh going to the microcontroller to tell it when something has been detected. We a couple of LEDs and there are two bits missing here. Uh, the charge and the standby connectors are brought over to the microcontroller as well, so it knows the charging status so it can show that either it's charging or the charge is complete because that also tells it when Uh Power is connected to the USB input in the first place. It basically pulls the Uh microcontrollers lines low um for that particular state.

So the two LEDs are used for indicating two 470 Oh resistors, one for each LED. We get the push button going to a Zer volt rail for turning on and off and we've got the output to the mosfet with a 10K pull down resistor and that res resistor will act of that mosfet is an A9t A9t very common mosfet and that switches the ozone generator. The ozone generator Uh generates a high voltage and it applies that high voltage between this very sharp Spike and this outer ring. This does two things because the air is being charged usually negatively.

That charge makes the air move towards the ring that creates a flow of air through the unit which helps actually do its job, but also because of the high voltage and the Uh electron and air interaction activity. At that sharp point, you get a Corona discharge which is a little purple glow around there and uh in that purple glow you uh are. it's basically Al a a molecular lab. it's stripping the air molecules apart, letting them Rec combine the oxygen uh atoms get split apart from the molecule O2 and they recombine some of them as O3 and or as just single atoms of oxygen and that is what gives it the sterilizing cleaning effect.

Now this is the point that all the Uh, a particular type of people will say that ozone is very harmful. don't breathe it in. This produces Trace levels. You're surrounded with ozone in the air at the moment because it's a natural part of air at very low levels.

What this does is it creates a very slight area of enhanced ozone. um, which uh helps just neutralize the odors in that area. But the levels it produces are not toxic. not unless you actually hel this under your nose and breath it all day long.

but this is uh, as simple as it is. it's a little potted module uh 3.5 to 4.2 volts was the range I Tested it before the glow disappeared which means it's not really using the battery below about half level, but still within the range of 3.3 volt regulator um, noting this doesn't go through that and the current range over that 3.5 4.2 Vols is 20 to 30 milliamps and it literally is just stainless steel plate with a hole in the middle and then a little crimped on stainless steel. Uh, Spike just pushed up behind that and they kind of melt it into the plastic so it fuses in and it stays put. It's all held in with heat staking.

It's very simple, but very effective and this unit does create a very, very slight uh interval Zone if you, uh, sniff it up close while it's running. not that you can because as soon as you get close to it turns off and goes into standby mode again. I Do not know what this ring around the base of the center was for unless it was to make sure the sensor doesn't get pushed in I Don't know, um, it suppose it could get pushed in. That's possibly what it is actually maybe is to keep that sensor pushed against the front plate although it is held in place by the plastic Clips as well.

The actual standoffs in here. so I Really don't know why that uh foam pad is there I Don't think it's going to really, uh, have an effect I Don't think the ozone's really circulating around this area, although some probably will actually permeate the unit, but that is it. Uh, it's an interesting unit. Interesting concept.

I Do feel that it's probably one of those things unless you are particularly delicate to cat whff from from the older, the uh, litter trees. I Think it's one of those things that after you'd uh, run it for a while, uh, when the battery went flat, you wouldn't ever charge it again? Not sure. H This would also possibly useful in the fridge or in a small cupboard just detecting every time there's activity. It would just give another little burst to freshen it up cuz ozone definitely works in the fridge.

I've got a unit here charging that I use in my fridge and it's got the same Arrangement down there. the same hole in Spike with a high voltage C and it just puts a we whff every so often into the fridge and it keeps it smelling very fresh inside. But there we have it. Literally, the cat detecting poop neutralizer.

It's a thing.