 there they guys so another kit here to build this one's a 38 LED lamp and they use a couple of watts three two two and a half watts of not bad little lamps I've got one on the go at the table at the moment which is the the core looking light as in cool color get underneath see the lamp there you can get them off cheap enough I actually bought mine quite a while ago because I've got quite a few of these I actually use I don't know why I keep saying naturally but yeah I got mine a little while ago and I find them to be pretty good so I thought I'd just do a little video just building one of these up just to show how easy they are it's not really complicated at all you don't need to learn exactly how the circuit works for anything because it's a kit which is ideal I don't think I could demonstrate the whole thing anyway I know that this is a this capacitor is used this is what governs the current flow pretty much do you get because we're using a bridge rectifier a full wave rectifier get about 7 milliamp to 100 nanofarad and there's 480 sorry 680 nanofarad here because we've got a 6 8 and the 4 at the end represents how many zeros this is known for its special type of pasta I mean it's an x2 just means I think it's more sturdily built and it's for high voltages so we don't want this being a pain so what we're gonna have is we're gonna have our bridge rectifier it's gonna be taken in the AC mains and then rectifying it out to a rather ripply DC and at the end of that we're gonna have this smoothing capacitor again 400 volts because I'm on 240 volts here so the voltage swing will go up as high as 380 and as low as 380 on the AC but by the time we've DC rectified it AC rectified DC we're not gonna have that swing as such up and down below zero imagine that's a zero line here up and then down it's just gonna go up and then it's gonna go up again and up again and up again all these little dips are gonna be where the ripple is and this will help smooth it out to stop these things from being visibly flashing at you yeah so I'm just gonna check this together you could have you looked around I'm sure I'm getting a bit cheaper than one pound 81 or two US dollars I just did a quick little look like I said I bought these quite a while ago and I just been using them and as you know I think I bought six or eight of them I'm not quite sure but sometimes it is worth just messaging the seller if you've got your eBay account and just say look if I buy ten of these can I have them a bit cheaper and they might say yeah you come for one pound fifty or you know what would that be probably one pound sixty in dollars I don't know what's going on with the British pound keep a check I put these in the right way around because you definitely want to put these in the right way around otherwise it's not gonna work now there are three resistors on this board and one of them is saying it's 100 ohms so the other two are gonna be the same we're gonna look at this one here we've got a brown blood like so it's all up brown blood but I think this is gonna be 100 ohms we could check it do I just look at the other ones and I'm gonna be looking for a hundred and fifty that should be brown and green we've got four resistors on here so let's run it wrong that should have been a hundred ohm let's have a look at this there we go 101 so now we know that we've got a hundred we can put that in there I'm not sure if this is a like a fuse type of resistor or something but we're just gonna check that in quickly and then we're gonna use let's just look at these again let's just check that these are all the same yeah they are I wonder why the other one is 150 then I just presume this is supposed to be like a bleed resistor but the capacitor could be completely wrong of course and I'd say be very careful especially we're gonna build one of these and then try testing it with why it is going into say one of these things because it's a direct connection to the mains and you really don't want to be doing that just checking again I didn't realize I was gonna be that extra there we go still 200k just chuck that in might look a bit of a mishmash on the back for all the wires but we can just snip a couple as we're going along soldering and it'll get some of the excess out the way oh do you the two big components last but that's it that's pretty much put on I'll get this sorted up and it would be good to go with the bigger ones so it's up and here's a little circuit tells us exactly where to put the LEDs they've all got to be in series so you've got a positive and minus positive and minus all the way around I will test these I'll do it off camera just to make sure I want the warm globe I know that's it sometimes you get a mixed bag even like you asked for the warm glow ones so but I've got other ones I can swap them out with just so I can have the the warm glow I don't really want too much of the blue light stuff so but I do a check on those and we'll see what we got there we're just going to take the face value of the values of these right let's get it sorted up I'm just going to put this in this way around so the value of this thing is facing upwards makes no difference and what you want to do when you put this in it make sure you can turn this over like this because this is going to be facing underneath and a circuitry here you don't want it like this so this is against here that's no good you're gonna want it so if anything if it touches anything it's gonna be touching the top of this but it shouldn't but it's still nice to have that little bit of clearance so when you put this in where you're you'll see when I put it in yeah you want that little bit of clearance again with this you're gonna be doing the same thing a long lead positive short lead negative but you've always got the stripe on there for the negative so I really do like about these kids as well as like I say they're hard to use any power and it's nice to have a night light on and you know I've got one in the hallway there which was also at my last place and so that's been running for probably close on two years all night every night with pets the last thing you want to do is get up in the night and it's pitch black and tread on one of them doesn't make up very good or it could even be worse and that it could be that they've been sick or worse inside where you are and you're going to trade in that without anything on your feet lovely okay now the other thing that we've got to put down now is that we'd have to connect these these wires for the LEDs positive to negative don't get these mixed up because it is you know polaritized really not from the AC you actually get two different colors you know we're not gonna not gonna argue about that so let's just pop these in I don't think it really matters which way the AC goes around this might be a bit of a pain if you can't get it to stay still see what we can do just make sure you had the AC and the AC ones AC and the AC ones can I put that on there do it not really just get it to stay always with this sort of stuff it's just a bit patience isn't it but a patient so nice thing about it now this particular camera I'm using it's just an S21 camera he has got this thing actually which is really annoying it uses you know it says it's 30 frames but it's not it's a mixed frame rate so when I go and put it in my editor I've always got to transcode it into something that's a fixed frame rate I don't know how to change that I suppose I've not really done them in terms of looking up interviews to do it never used to be more like it but all of a sudden this thing wants transcode in every time so I've obviously changed the setting somewhere done something somewhere I'm gonna pop these in just while I'm at it doesn't matter which you know because they're both black but it will matter when you're actually connecting it to the the PCB itself the LED side in the whole Hawaii goes through so that might be a bit challenging Kimmy well great and the why doesn't get through but I think long enough to do is just pop it through the hole there and then just bend it over a bit just stop it from just falling out you know that should do it and if an excess on there can be clipped off the end as you again I'm gonna do the same thing just pop it in the hole and bend it over at the top that's on the same path anyway so don't really matter but I will just be nipping off anything that could possibly penetrate you know do any sort of damage but as that should be facing down I shouldn't be too much for a problem actually don't worry about it too much it's always worth just keeping in mind look I don't know what's happening it's good enough for me good all right now this hole here is where it's gonna go over this part here when we're inside of this and it's gonna be a case of just sort of trying to just jam it down a little bit but there is enough space to clear anything coming off the bottom of this of this so let's get to it and just connect this up you can see actually where the the positive which will be this end one on the edge here it's gonna go into the middle here so it's positive and then there's the negative so all these are connected in series okay so I'm gonna yeah I'm gonna just pause and come back to doing this once this is done you've got this done so we just got to make sure we get these the right way around now and so that is the negative that is the positive I'm not going to try and put this through a hole all I'm gonna do is just soldered onto that tab so let's just bring that in I'm just gonna put a little bit of a solder on there onto that tab and I'm just soldered this into that double checking again that we get it the right way around actually do myself a solder the soldering I'm not to be touching anything else I need to start with looks good okay and then the same for this maybe to go over here hello Felix it's up behind me on the jet a little now and it doesn't matter that's connected to that there because it's all part of the same trace anyway so there we go now when we put this in then we're just gonna put this over the top of this so that goes in with that white bit sticking through there I don't know I mean I've tried this so many times to sort of press it down so it stays in and that's all staining I do that it's not gonna come out I believe even if it does once this is on it doesn't matter now this all you got to do is push it in at the edge and just get it to click into place yeah like I said some of them are easier than others the one I did the other day that was much easier there you go so both ends in that's in there but it does make it nice and easy to pop back out again because there's a little bit so you can just get something in pop it out because if one of these goes difficult to get them out but it's still easier in some respects just to check on before you put them really we got two LEDs and one spare resistor out of our batch so moment of truth and I suppose let's let's swap it out on the light there let me turn the soldering iron off as well just tin the end of the tip to keep it nice that's any minute there for the minute now the wire on this lamp isn't very long at all so I'm gonna do so I'm just gonna turn this up to here turn that on first for safety and twizzle this one where's our new one there's the new one and twizzle there's what this in and flick it on