 Hey guys I've been playing around a little basic simple circuit. It's a It's a little circuit that just flushes from 1L 1LE1LED to the other It's it's got an a stable multi-vibrating circuit or a stable my multi-vibrator A stable because it keeps going I suppose the multi-vibrator you break it down multi means many vibrates and vibration oscillation movement But yeah, I thought I'd put it together it's switching on nine volts DC input And it is a very basic Circuit, but do not I'm finding I'm finding I'm learning more by playing with these very basic circuits Then I do when I you know when I put together a bigger project I Think it's because these are quicker and simpler to set up the parts more easily obtainable In this circuit, we've got a 210k resistors two four hundred and seventy home resistors Two little 1LE1LEDs as you can see To 25 volts. Oh, they could be 50 volt actually. It doesn't really matter 25 volt 50 volt These are a hundred mic Little capacitors and these transistors to men to two to twos So everything, you know, you're gonna find these bits in every every kit and everything pretty much Now you can play around with this circuit you can get it to speed up and slow down you can put a Swap the 10k 5k's and that will speed things up you can pop in some different capacitors. I know this because I've been doing it Try different capacitors You can actually try a big capacitor and a small capacitor Which is quite good because the big capacitor states on for a lot longer and the smaller class They can come on once nearly twice in the time that the big pastor So you end up with you I'll show you then you end up with a More of an effect I'll put the little circle up in a second and so I switched it off make it easier to see So that's the big capacity is still on There's a small one That's all the big ones It doesn't actually get chance To fade out fades out a little bit and then comes back on Switches like I can't get into sorry so anybody's got what sense device So let's put something in there not quite so big. This is that that was a thousand Mike. This is a 470 So pop this in Sorry about the lights again As I could just leave a light on I couldn't know you can see it what it's doing, but it looks a bit nicer Yeah, so We can This is a smaller 470 I'm sure that you shouldn't really do it like this just pull out So again there's a Change again in the time like I say, you know, you can swap out these resistors and play around like that Some big old pastas in just put them all in the right way around And there we go because that's all equal to 10k is going in to 100s And yeah, but it's a great little thing you can find this little circuit on the internet And you can hook it up to Hey, it's an escape if you've got one You should see this sort of thing because it's a square wave The left side is the capacitor charging on the right side the straight drop down Is the discharge? It's not that easy to see but it drops down very quickly I mean it is instant don't straight down to bear on this person There you go so Yeah, little basic circuit great fun great fun to play around with BC Five four five sevens. I think these are five four seven. Sorry Yeah, five four sevens and you can The wiring's different These ones are collector base emitter and on the two in 222 twos their emitter base and collector so So you can swap these around if you haven't got the two in 222 twos You can swap them for these BC Five four sevens or any of them. That's the common MPMs. Just check The pin out to ensure you get on the same place There you go little basic circuit. Well worth building. I'm gonna take it part now and build something else See you guys