 Wel, dwi'n gweithio'n gwirio eu cyntaf. Mae'n gweithio'n gweithio'n cyffordd o'r cyfrannu. Cyfrannu o'r cyfrannu. Mae'n gweithio, ond mae'n gweithio, ond mae'n gweithio i'r ffan, ac mae'r fan hyn yn ymddangos ar y teimlo. Rwy'n meddwl, mae'n meddwl o'r panel ac mae'n meddwl o'r panel. Mae'n meddwl o'r panel. Rwy'n meddwl o'r llun o'r llun o'r NTC. Rwy'n meddwl o'r meddwl o'r meddwl o'r meddwl o'r meddwl o'r meddwl. Let's just pull that up. Can you see that? You can see that good. That's the NTC. That's the 5k at 25 C, a negative temperature coefficient resistor. This little circuit which I have already done a video on, but I hear it when it comes in. This is where before I had a 4.7k resistor. Just across here. But now it goes out and goes up there to that NTC. And as it warms up, it puts the fans on. It does have a variation of speed on the fan, but there's not a great deal in it. You've still got slow, but it's not as low as they'll be going round it like that sort of fashion. If you're more like this sort of fashion, faster and faster. But it's not on full blast if the temperature's not that high. So the variation on the resistance does mean that it works okay. Ignore these little batteries. These are just charged. That one's there charged ready to go on this one when this battery sort of fails. Because that keeps that little clock going. It'd be nice now if it would warm up enough for it to kick in. I decided to start doing this because it's on a day where I was hoping there would be some clouds. It would go on, it would go off, it would go on and go off. And that's exactly what I wanted this to do rather than before when I was just connected up the fans in series. Two 12V fans in series to the maximum of 22V open on this solar panel. But it gives me roundabout sort of 17V with a load on it. So really the two in series, they never go full pelt. These fans, because they're just connected up in series. I know the widest bit of a mismatch, but I know what they all do where they all go and it's fine. And it would just be nice if it kicked in now. But what I may have to do is just add to this video. Because obviously you can see they're not running at the minute. They were a few minutes ago. So I decided to pull the camera out and do this. But hopefully within the next maybe a few minutes it might just kick in. But it works really well. I've had this working now. When did I put that video out? Well about the day later or the next day. The NTCs came. I'm sure I said that in the video as well. Did you see it? It's just tried to start kicking off there and I can even feel a bit more warmth coming through now. There we go. Look at that little poetry in motion. And it's not full blast. The other one hasn't actually got enough energy for the other one to be spinning just yet. So we've already got one on. But I don't know if you notice it just slightly moved then. Oh and again and again and again. Here we go. Look at what a good one. I think now it's calling. So that one's gone. That one stopped as well. Oh you can't really see the other one. There you go. Seeing the way this works is when those two fans are kicking in because it's nice and warm on that panel. On that NTC. The air blows through here and it comes out between the batteries. So it blows air up here. It blows air up the top between the blinds and the fan. Keeping that cool comes out of the batteries. It also blows a bit of air in this area. So it goes between these cooling fins on the bottom of this solar charger. This is brilliant. It's a bit dusty. It's going there to give everything a clean. But this is absolutely brilliant. You know it does. It sucks every little bit of... It's an MPPT. Maximum power point tracking. And even first thing in the morning. Even when there's no sun out there and it's just light. Even on those horrible wintery days. I think I only had two days where it wasn't really capable of doing anything. There we go. It's warming up a bit. So one fan's kicked in. The other one's just getting a little bit of a... Not enough to get it going. But as that sun comes up, it's a little bit of a thing. And like I say, as that gets warmer, as it gets warmer, that will just get quicker. And it's great. It also means that when there's not so much warmth there and the sun's not coming down on the panel, those fans stop and the power that it would take to run those fans then goes to my batteries. Which is what we want, yeah. I don't know if it says 23 in here. But I don't know if you can see that there. Yeah, it's flashing because my batteries are charged already. Even though I left the lights on. I have the lights on. As soon as it starts getting a little bit... Not dark. I just want the lights on. I put them on. And sometimes I just put them on during the day just so it's like pulling some energy from the battery because I keep thinking, I'm good at it because this energy is going to waste now. But I am going to set up some more fans in here and I'm going to set up some more little circuits like this just for myself in here. And I'll put the NTCs up in the window so it starts kicking on the fans in here. Nobody can hear that, but they're on a bit louder now. A bit faster. It just goes to show that it works great. It works great. And this has been like this running now for a couple of weeks or since I did the video literally the next day or the day after the NTCs came. I actually got three different types of NTCs. I got one which was more expensive that I've not even used. It was a lot more expensive. These are 25 seconds for temperature coefficient or something and the other one's seven seconds. I don't know what that means. I need to look that up. I think the faster acting, I'm not sure. I don't know. I need to look that up. But in order for me to get the free delivery act and there were five, I spent five quid on these parts NTCs. I've got three different types. One was just a singular of one and the other was a couple of fewer of one and one was five of these particular ones that I'm using here. I will put in... I don't know if I can put comments on these videos that I'm doing at a minute because I'm using a different system or I may do it through my Windows machine just because I'm about to do another video on the Windows machine just to debunk some things that have been said about what happens if you don't activate Windows 10. Or... because they went to the extremes of saying after an hour of you're not having... if you're using Windows 10 machine that's not activated after an hour it'll mess up your softwares. You won't be able to get updates, everything turns to hell and they were pretty insistent but that's not the case. I'm going to show you how that's not the case at all. Right, so... just so you can see that that actually does work it works very efficiently and I'm very pleased with the way this is set up and I will be converting this to a proper board because it's worth it and I want this back because I want to do some more practice typing. Cheers watching boys!