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Welcome. I wanted to provide stripboard layouts I've made to help people new to electronics and even the more experienced get into different aspects of electronics.

I verify the layouts before I post them.

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Monday, 30 April 2012

Valve UberScreamer Pedal

Sorry, couldn't resist


Voltage Inverter With 555 IC Stripboard Veroboard


I can't remember why I did this or even when I did it but I did do it, it was quite possibly something out of The Art Of Electronics but I can't be sure - anyway I'm guessing I needed a -5v supply for something and I was too cheap to buy a 7660 or MAX1044 charge pump



Curious C-Beeper Stripboard Veroboard

this is a cool little piece of test gear that I made after seeing one of Alan Yates' videos - you should go and watch the video and I'm sure you'll want to build one too.


reposted without permission - because I couldn't find a contact to ask





Instrumentation Amplifier Stripboard Veroboard

this is not a complete project, I did this to kind of interface an Instrumentation Amplifier with various sensor ideas - the interface works and is a good little experiment platform


Arduino (for extra blog cred) Stripboard Veroboard


I did this sometime ago when I was flirting about with uControllers, needless to say I grew bored of them pretty quickly because it's not really electronics, it's programming and I hate programming however I did a few projects that I wanted to keep and make permanent so I did a stripped down veroboard of the Arduino board. essentially it powers and allows you to interface with the uController I/O's - has a "sketch" reset switch, a main power LED and a flasher LED (if you want to run the LED flasher "sketch")



Simple Adjustable Bench Power Supply Stripboard Veroboard



here is the schematic/layout I made up for it - it's a bog standard LM317 circuit which I made a few additions to, I used a 1k multiturn potentiometer and a 121r resistor to give me a maximum output voltage of about 11 volts
you can also use the extremely common 1117 adjustable regulator - it only gives out 800mA but the beauty of this IC is that it's in just about everything (usually surface mount) 

I also added the power supply needed for the display (layout can be found in the blog under "7107 voltmeter")



EMG Active Preamp for 81/85 pickups Stripboard Veroboard


I recently got a LTD les paul type guitar and it came with the EMG-HZ passive versions of the 81/85 pickups so I searched the internet for a schematic of the preamp circuit and found one, made a verolayout for it and then put it in my guitar and it's pretty cool - here is a song I used the guitar with the preamp in

Dual Op-Amp Tester /Signal Generator Stripboard Veroboard


I bought a ton of LM358s from China (grey market IC's) so I wanted to make sure they all worked - I figured the best way to do that was to make a rudimentary signal generator that outputs a triangle and a square wave.
I've included scope settings so you can easily see if the IC is working or not.
























Mains Finder Stripboard Veroboard


a quick brutal mains finder stick thing - in close proximity to mains it will cause the LED to flash - I've used a weird type of layout in order to stick it in a tube



Buffered Y Splitter Stripboard Veroboard

as an engineer of music one of my biggest frustrations has always been guitarists and "EQ creeping" because they never realize that to get the best results through a microphone you have to severely reduce the EQ settings that you would normally use because what you hear from across the room is much different to what a microphone hears at the sound source - so what happens is that you set the amplifier up for recording, the guitarist would think "that doesn't sound like it normally does, I better adjust it because it won't sound good on the recording" and usually when you aren't looking they go over to their amplifier and turn the mid down and the treble and bass up this is the phenomena of EQ creeping, it becomes a problem when you set up everything to sound good on a recording only to find after recording a whole ton of tracks it isn't to be a nightmare of EQing because of the EQ creeping that has gone on.
so in order to combat this I made a simple little Y box (or Why do they not listen box) which I use without their knowledge so that it records whatever turd they think sounds good from the amp and a separate signal directly from the guitar allowing me to set up an amplifier after they have pissed off to tell their mates how they "laid down some sweet tracks today and it's going to sound awesome cause I helped engineer it" 

so if you have ever been annoyed by "musicians" using the practice of EQ creeping - this is for you.
it needs to be buffered because a very low voltage signal is being split to 2 outputs




Theremin Stripboard Veroboard

quite a nice sounding little theremin - I even had PCBs made up for this one cause I loved it so much but for you here are the veros.
make sure that you do not ground the antenna by attaching the antenna to a metal project box like I accidently did cause it won't work, it is advisable to remove
all unused copper tracks to reduce any noise.
it only draws 65mA so you can use one of the smaller transistor sized voltage regulators with no heat issues.

edit: the trim pot is 10k and the external pot is 1k








Red On Green Off for selector swtiches

a Quick little circuit - essentially it is an inverter which changes the polarity depending on the state of the switch, as I used it in a guitar effect primarily (quite a few other things since) I made a few pictures up to show how to connect it to a guitar pedal switch




Balanced to Line Microphone Preamp VeroBoard Stripboard

this is a nice high quality microphone preamp without all the added audiowank you usually see on these things - it uses quite expensive parts mainly because I got them as free samples from Texas Instruments.

I recorded a few songs with it - acoustic ones in order to show what it's like on acoustic guitars because that's where it excels 

you can of course add phantom power to this however you need to add it pre- the diodes (they are there to protect the instrument amplifier IC) and you also need to make the 2 input caps (C1 C2) non polarized ones 






Boss OD1 14 Pin Version Stripboard Veroboard


a guitar overdrive, quite a nice one - it uses a quad op-amp this buffers the input and output signal before/after it's passed through the overdrive which makes your guitar quite responsive but not with over the top overdrive.

this is one someone asked me to make for them - they wanted the "14 pin version" and not the "8 Pin version" basically Boss decided to reissue this pedal without the buffer parts - most probably because the op-amp they used had a none standard pinout to a jellybean one like a LM324 and instead of redesigning the board to use a different quad they redesigned the board to use a dual op-amp, I'm not entirely sure what the thinking was there but here is my version which is a quad op-amp version to use a normal quad op-amp.

IR Flip Flop switch Stripboard Veroboard

this is a little design I did when trying to figure out a way to turn the light on and off from across the room with a remote control, the drawback to it is that it reacts to any IR remotes but after I made this I replaced the sensor with a hacked off bit of dvd player (the bit with the IR sensor stuff in it) so it now only responds to a few buttons on the remote that belonged to the old DVD player.

for me solutions are better when they are free - I don't care if it looks like shit.



Atomic Clock

just a small "on a whim" eBay purchase - a rubidium clock which was (literately) sawn off an old mobile phone tower.
not really much in the way of electronics all I built were power supplies really but I think it's a cool little project and I use it to sync my midi/digital equipment - not that you need an atomic clock to do that but it cost £40 and all those weird audiophiles will love it.

on the datasheet for this thing, it had a note saying that it's locked into it's super-accurateness when the output goes low on the indicator output. so I made a little transistor switch to light an LED when it goes low

edit: whilst looking up some info on RF I came across this site which has some brilliant information on how to adapt your own version of this very atomic standard Rubidium Standard




Technical Manual


Constant Current Dummy Load VeroBoard Stripboard Veroboard

Constant Current Dummy Load
Similar to the one Dave uses


I thought it was a pretty cool idea for small output power supplies so I made a little veroboard layout for it from the schematic he posts on his whiteboard, my (small) addition was the little regulator circuit to power it a little more easily from a 9v battery or something.also, use a much bigger heatsink than I used, I used a fan in the top half to get rid of heat.





7107 LED Voltmeter Stripboard Veroboard

based largely on articles in The Art Of Electronics I came up with this layout for a DVM based on the ICL7107 DAC I ended up doing 2 different layouts - one with a built in power supply to give me the +/- 5v needed and one that is just the meter circuitry alone.

in the Datasheet - the 7107 calls for the use of a 100pf capacitor however I found this to be far too slow at responding to a multiturn pot in a power supply so I replaced this with a 10pf capacitor which was much much better - meaning of course you don't have to mess about with trying to get accurate readings from the adjustable power supply (if you use it in one) if you build it - try to ignore the displays I've put on the first picture - they were for my reference and it was possibly a very specific display (I tend to use salvaged junk)

I've also included a couple of pictures of things I've used it in.

Add caption
Display wiring layout