 Right guys, so here I have a genuine highland board And I'm going to show you what it's supposed to do Okay, so first of all, I'm going to just wind this down My ten turns probably should have done this and what we got here is we've got a ten ohms ten volt ten ohms resistor, okay, and And We are going to the reason I put this is because this is plastic on top it enables right on here So I put those up just on here to stop this and heads against to one sit on there So we've got a voltage meter That is connected here and here and we've also got a current meter and We are connected You know we're coming from the positive through a meter about through the native through the resistor Okay, so what I'm going to show you now is first of all is I'm going to show you how This pop down here the rest that we call it in the instructions the instructions That you get with these fake boards these ones Are actually the original instructions kidding if you look on there I'll put a picture up if you look on there from the original instructions You'll also see that the board has the voltage regulator Facing the same way as the past transistor, okay, so they both face the back. I mean it's ideally Situated in a way that you could probably Connect this to you He's saying if you want it to bet So what we're going to show you and then I'm going to show you You know how it doesn't actually work on this So first of all, let's give it some power and I'll just turn this down all the way. Let's give it some power Okay So as you'll see on both these meters not lots really happening till I start turning up and as you can see we're on one volt and automatically Just bring that down a little tiny touch. You can also see that we're on Yeah, not quite a hundred milliamps But that would be around about a hundred milliamps there and if we go up Couple of volts Let's go to Let's just get to five volts and that's in fact because that'll put us halfway between What we're gonna be looking for what we're gonna be looking for is around about half an amp So yeah, it's not to run about five volts Okay Here we go and we have Just about there. It's tracking up pretty much the same But I got them Which is lovely One is easy to do this ten-term price a bit sensitive in areas But it is probably one of the cheapest ones I could find put a couple of them that are really really cheap off eBay So I didn't expect them to be really good to be honest with you But they do the job just for these playing around and that makes some idea now What we're gonna do as well as now we're gonna go to ten volts Because this is how you can set up and you can start marking off if you wanted to on your current Whatever enclosure pull it into like it suggests in the instructions or the destructions as we like to call it sometimes But yeah, you can set up then to calibrate your one amp And this is exactly what we're doing here like this and that's what we've got at ten volts We've got one amp and our current limits kicked in now I just turn off But I don't even know it's that's a nice little red color nice little red and It's not too in your face like you can still read that I think it was up on her if it was up on your If it was up on your You know, let's say you're doing a video at night. Last thing you want is a bright white LED shining in your face Why are you trying to look at your meter? Unfortunately, what comes with these boards is that bright white LED? I Don't know what to say when it comes to these boards. It's just a bit terrible. Anyway, and now what we want to do as well It's now I've got this The voltage all the way down now He doesn't say we should do this with a load or not, but I think just for this I'm gonna take the load Out of the circuit So we don't have this load anymore I'm just looking down at these the voltage down here Then what you can do with this trim part down here is you can just calibrate your voltage and beautifully or You know get it to the best you can with them and the pot that you got So if I take this down like this one, I think I go there we go No Just a little bit back again Just turning this back and forward a little bit just trying to find that little sweet spot Very quite happily just six on the zero I think we're probably good there Just a little you go sit and play around there we go Now we're gonna plus look at this one But this is something you're gonna find, you know, you can't expect all these to be absolutely Absolutely spot on but it's gonna give you good enough Okay, it's gonna give you good enough and that's and it certainly can give me good enough So I'll do for me and then this is millivolts But if we put that We start turning this up again, and then we see how far we go All the full voltage. There's no load on this I'm just gonna twist that up a bit quicker just a bit more aggressively Just to get it running up there And this will do itself. You don't have to calibrate this. This is because I've got 24 volts coming in This is what I'm gonna get out once you take into account the losses of the circuit Because 24 volts to DC would be 36 volts And that's how it's supposed to work. This is how one of these is supposed to work and they work great I've had this one for years And it works great But now I'm gonna show you what happens With these other boards such as I may as well just leave it rolling while I swap this out, man So, first of all Just pop those in there Now I've got 12 volts and 12 volts on this so I've joined them together in series And that enables me to have 24 volts AC Okay, all right, so now what I'm gonna do is first of all we're gonna use this little Neatome, I'm gonna take these out of here because if you notice Just shift that up a little and I'll turn that off for a moment And I'm gonna pop these over here because this is where our output is And these little grips are quite happy to grip all of those And they're insulated away from each other which is quite nice And we're gonna look first of all at the What we're looking for is to bring our voltage to zero The radians there Okay, and again we're gonna be using this little This is from the 1010 pop for that So let's switch it on and see what we've got No surprises from last night, hopefully All right, well straight away we've got our LED coming on as you can see So, get that out of the way actually It's a bright white, lovely, that's what you want facing you Or you're trying to look at, yeah You display on there Okay, and then on here look We're gonna put our A voltage motor, can you see that? Okay, and then we're gonna use our twigler to adjust this Now, probably what I found is we can't really adjust it Mid-volt range Hear that clicking? Yep, as well at the end of the range So we're gonna slowly get out Because it is a bit of a sweet spot on this that you gotta find For it to start making adjustments But if I turn my voltage all the way to zero My current all the way to zero Even if I turn the current up It's still not turning out this It's still saying the current is being regulated Which is no good to us It's obviously no good But let's carry on going around with this And see if we can just get this To adjust it all At the middle of a minus Seven Point seven We're gonna see if this makes any difference I'm going slower and slower Because I do realise that, you know Like I said, there is a bit of a sweet spot on this And so you can have to just Slowly go through to see this start to fluctuate Oh, this fluctuates the right way I don't know, I didn't get a very good education so But you'll see a difference If this pot is making any difference We should see a difference here I'm afraid Let's just go back there a bit We did see a slight bit of difference going on Yeah, if we make that to go any lower I don't think we're going to be able to Because just because I don't think it's actually I think that could have just been I don't know what that was But I'll just keep twiddling this around Keep twiddling it around And nothing To be honest with you We've been around more than ten times now But it's not clicking I don't know, a little Let's get back up a little tiny bit Just fine there Trying to find a sweet spot like this You get a lot more area For trying to find that sweet spot A little place where you just bring it all down to zero It's full voltage for a deal for itself But look, this is doing nothing We've gone around this more than ten times And this pot isn't giving any indication But at the end That possibly faulty pot But look what I haven't done We've turned the voltage all the way up Now this is supposed to set itself With 24 volts going in To give you 31 volts basically coming out But that is the follow-up Can't turn it anymore 26.31 And if you think about 31 volts and 26 volts That's around about 5 volts difference Is that relevant? I don't know I don't know but it is that difference But it just means that we can't really do anything For current either because I can turn this current pot All the way up to the right And turn the voltage all the way up to the right And there's still no difference Now this is before, this is how I left The other board And this would be the other board And I'd just left it like that I'd just leave it and see what happens And what happened with that Let me turn the lights back on Is it... It did that But it did that It cooked it Cooked it straight across the op-amp Beautiful, huh? And that was sparking And all sorts of things Which is great for having these things It's very easy just to off that Of course to put it back on again But that's... That's the problem with these With this particular one this doesn't do anything We can try another one We can stick this one on as well Just to show you the difference I've actually changed out the op-amp The claim to be the real ones It's hard to tell My future will be buying from proper places Unfortunately I'm getting a bit... Before when I started buying stuff I didn't mind, it was cheap Cheap for it to come You know, you get a bag of 100 nanofarad Milo film capacitors For a dollar You know, basically nine to nine cents Post it I don't think we can post anything in this country To my neighbours I wouldn't be able to post to my neighbour For less than that price Of the components But so as you can see You can see what one That's supposed to work And does work And is in fact an original That they work But these ones, they don't work So buy at your own... You know, your own risk there But if I was you, I'd look out for these I wouldn't just trust the first image The one on Banggood Because, well, they've obviously got Another image of these types of boards And it's these ones that they send out to you Not these ones Okay guys, I'll Look at some more things for this Maybe in the next video