Breadboarding Basics - creating a basic guitar booster, Vlog #10

hello so I had a couple of questions here recently about bread boarding with the last DIY stuff I was doing I wanted to show you real quick I found a piece of software that allows you to allows me to kind of show you how to breadboard a simple circuit and so we're going to try to do this software kinda works a little bit so bear with me and hopefully it doesn't get too confusing now before beginning if you have a breadboard now's the time to break it out if you don't have a breadboard just kind of watch this and hopefully understand kind of how it all works the whole idea is basically it allows you to build a circuit quickly and easily without soldering anything you will need a couple guitar jacks and a little bit of wire you will need to solder some wires to those jacks and to a potentiometer you'll need a maybe 100 K or 500 K potentiometer as well let's jump right into it okay so this is a basic breadboard let me explain how this work this line here these are all connected this line here these are all connected same thing on the other side as well the parts in the middle each row is connected so that rows connected next rows connected next rows connected this way all the way across same thing for this side as well so what that means is if you put a wire in here it's going to have zero resistance between here and here and here and here basically meaning that it's connected let's create a simple circuit now this is software I found online one two three dot circuits dot IO and it's a pretty basic like breadboard type program have a couple of basic components that one might use to do this so what I'm going to do is just create a real simple J phat type of circuit just something that's going to increase the volume of a guitar signal for example and how you would breadboard that so the first thing I want to do this is my power supply showing a battery you can use a regular power supply if you want just connecting the positive and the negative in the same way I will have a wire going from the battery snap to that dot right there again it could be anyone these right here it's just closest to the battery easier job I connect the negative wire to the other row okay now what that does that means this whole row here this top row that's now ground okay and this row here that's all nine volts positive voltage DC voltage if you're using op amps for example or even just if you need this side of the board it's easier a lot of times to pull power or ground from here as well so a lot of times we'll just create a jumper going from one positive side to the other the same thing with ground so those are just jumper wires okay so now this role is positive and now this row is negative simply because we jumpered well first we connected power to this side then we jumper wired to the other side so that puts power and ground at both sides of the breadboard okay now of course we need to get a guitar signal in and out so I don't I didn't see a jack on here so I'm going to assume you know how to wire a basic jack if not then maybe I can show a nut in an upcoming video basically on a mono jack there is a ground lug and a positive lug the positive being what the signal would carry through here's a basic jack alright now if you look at it see that how that ring inside is connected to this tab well that one's that means that this lug that's connected to that tab inside is going to be ground in this other one which connects to this it's going to be that's going to be your positive so if you're wiring this up for a breadboard your guitar cables going to plug into that obviously this wire is going to go into the input or the output since we'll need two of these one for the in and out and then the ground is just simply going to go to the ground on the breadboard any of those holes so let's move on okay so once again I showed you how the jack works you have a wire coming from the ground lug of the jack the ground of that jack is going to go into this row here or the other one and again all the grounds connect together eventually goes back at you know it's connected to the ground on the battery so your guitar jack we just wired up with the ground and a positive right so the ground is going to go into this row that's connected to the ground of the battery this row right here or the opposing row on the other side either one as long as the road as long as it's negative so or the ground same thing in this case the positive let's just run it let's run it into any of these rows right here the positive wires in the jack and I know it's connecting to a resistor it's because there were there's not a jack on this program for whatever reason so I need something to connect it to so just act like this resistor is the positive lug of that jack okay I know that's hopefully that's not going to confuse anyone too awful much so that's where your guitar signals coming in into right here now let me grab some components real quick hang on so now I'm going to make a save that circuit for some reason there wasn't a J fit in this style of casing so I had to use an NPN transistor so ignore the end ignore the markings on there let's just call this a J fat since they both look exactly the same okay a J 201 is what I'm going to pretend this is I'll put it out let's put just somewhere right here did the legs of the of the J FET are in three different rows I need a capacitor and probably probably a resistor of some sort going to this J fat to the input of it for the J tool ones I'll connect it here and for the purposes of this this little demonstration it doesn't really matter if you use the capacitor first or the resistor first I tended like to use the capacitor first for this simple simple circuit take this capacitor here let's make it a point O two two let's just if you're digging through your parts so connect it right there see how the wire is going in this row the first pin of this capacitor is going in this row all right so I have a capacitor first coming to the guitar signal let me take this resistor now connect so one leg one leg of the resistor is in parallel or in other words in the same row as one leg of the capacitor now we need a jumper wire get from here over to this leg so what we'll do is click on this row so now our jumper wire is attached to this leg so now we have where our signal is going to this capacitor and then comes out the other side of the capacitor which attaches to the resistor goes to the resistor and then the sound continues through this jumper get this little jumper wire to this first pin here now this pin here this middle pin we can make it several different values really depending on like what frequency response you want how much gain you want so I'm just going to use I'm going to get quite a bit of gain out of it and I'm just going to use a 1k and you'll see at the input there I have a 1k as well you can make that bigger if you want one case fine for most stuff as a booster with a J FET circuit that resistor that's on this middle pin here we really need to attach one end of it from here to ground now I don't think this breadboard software will allow me to do that so what I can do is run that resistor this way and then connect it to ground so this resistor let's connect one end of it to to the ground and of course the other end is going to go to a hole right there so we're going to take a jumper wire since this whole row is connected and we're just going to go all the way to that middle pin so let's move this transistor up a little bit so we can see what we're doing a little bit easier so now you can see everything a little bit closer so once again this middle pin we're going to get jumper wire go from there to the row that this resistor is in of course this resistor goes to ground now we need to get power to this resistor as well so when it is going to the power to the power side here again we'll need a jumper wire to get it to connect to this pin now here's here's the tricky part resistor is actually going to change it shows it's a 1k here it's probably going to be more around a 15k if I had to guess but the way you need to actually do it is you need to take your multimeter put it on the DC voltage setting and you're going to take the black pan of your multimeter it has two probes on a multimeter you have a black probe and a red probe take the black probe and just touch like this into the resistor that's going into ground just so that's your that's holding ground and with the red probe you're going to touch this pin with the red probe and read what it says and what you're going to actually do is you're going to adjust this resistor size until what you see on your voltammeter says 4.5 so what that means that might be a 15k it might be closer to an 18 K or a 22 K or it could even be something more like a 12 K resistor now it doesn't have to be exactly 4.5 volts I don't like to go below that but I usually say the magic area is about 4.5 to 5 volts so now the transistor is working but we need to get sound out of it right so what we're going to do is take capacitor remember we have that jumper wire here jumper wire that goes from here to here and connects that resistor so on one side of this capacitor it's going to more or less be connected to this pin and from this pin that's where your sounds coming out from this pin that's where you'll connect your other jack that you should have wired up and that part goes to your guitar amplifier you'll have your wire that connects to your other out your output jack the jack that goes to an amplifier let me just connect it to a resistor real quick because it won't let me yeah well let me leave it in midair so again here's your input wire here's your output wire now on your jack like I said before both of your black wires are connected to ground so they're connected to this row here but connected to the ground the battery ground is connected to whenever you connect this breadboard to amplifier just a bit of a warning it's going to be very loud or to your regular guitar signal because we have not put a volume pot or anything in there just yet so if we do want a volume pot let's just get let's not plug-in that output jack yet here's our capacitor that's that's the sound is coming out of this J fat from right here's a potentiometer this is as if you were looking at it you know over the top of it just like just like you would have like in a pedal or something so you'll see these lugs here right now if you are using your pot that is not made for a PCB board mount in other words it's got little round holes that you attach a wire to same idea you'll just have wires coming from it in fact rather than plugging into this I would just I will pretend that we are using that type of potentiometer so what we're going to do is this third lug here the one on the on the right that's going to connect to the other side of this capacitor okay this lug here the one on the far left is going to connect to ground and now there's one lug left right so that lug you're going to connect it to just just connect it to a random hole doesn't matter where and now you're going to connect your output Jack positive wire we just spoke about now that is going to connect to one of these holes here because like we said this whole row are each row is connected right here so your output Jack positive wire is going to connect here and it's going to run out to your jack and now your potentiometer is now your volume knob so I noticed when we're viewing this video before I was getting ready to make it live that I forgot a resistor so here's what we're gonna do I'm gonna have my amazing video guy Bob sink this in for you guys basically we have the entire circuit here except for this one resistor that I forgot this is a 1 Meg resistor and it's going to connect basically right here what that means is one pin of this resistor is going to connect to the same pin that you're basically the input of the FET right and then from the other and the resistor it's just some going to ground still wire that goes to ground all right so here's the basic schematic your input your input wire your positive input wire goes here goes through this capacitor then goes through the resistor here's that resistor to ground right before that J FET if we only put that J FET then you have the 1k resistor to ground so this resistor here is the one that's actually going to this R 5 is the one that's going to change depending on the voltage depending on their bias that's the one that you have to buy us at four point five to five volts with your multimeter the signal goes out through C four from this and exits the J FET goes through this capacitor then here's that volume pot and you'll notice these grounds here these triangles they're actually all connected as you saw on the breadboard so even though it shows them as totally separate things it's just one big ground everything's all connected there at the ground so your input wire goes here your output wire goes there just like on the breadboard circuit your input goes into this here's your get cap here's your resistor it goes in here's that one Meg that goes to ground here's that 15 K is what I put on there at say 15 22 K that's it usually is around that area with most J fats J 2 Owens this 1k to ground is that 1k resistor at the bottom of that J FET here's your volume pot of course and there's the output that is your guitar signal is going to go to okay now I didn't really talk about what size potentiometer I'd like to use probably a 500 K or a 100 K this is a 500 K these are the lugs I was talking about how the wire just connects directly you know you wrap your your wire around that and you solder your wire to that much like you did the jack so you will need to solder that stuff up but that potentiometer on there was basically looking at it like this so the one left connects to ground on the right connects to that capacitor the Monon the middle is the one that goes to your output jack and that's the gist of bread boarding it's basically how it works allows you to build a circuit very quickly and easily without soldering that much if you have any questions or comments please comment below and we'll see you in a couple days

Channel: Wampler Pedals

Views: 94,893

Rating: 4.9409738 out of 5

Keywords: breadboard, breadboarding, pcb, layout, capacitor, resistor, jfet, transistor, NPN, potentiometer, gain, booster, j201, how to, electronics, diy, diyers, breadboard basics, wampler breadboard, breadboard guitar pedal, guitar pedal breadboard, breadboard circuits, guitar booster, breadboard wampler, wampler breadboarding, breadboard pedal, jfet boost, breadboard guitar amp, jfet booster, how to build a guitar pedal, bread boarding, breadboarding basics, breadboarding guitar effects

Id: zkIFdSfFvT8

Length: 15min 45sec (945 seconds)

Published: Wed May 18 2016