Welcome - Please Read

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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Sunday, 14 December 2014

Electronic 3 Band Equaliser Stripboard Veroboard Layout


There are lots of circuits on the net for 3 band EQs but I wanted something a bit more powerful than the usual 20+dB/20-dB things on offer so I went on eBay and bought some grey market MC3340P attenuators from china and made this thing.

I made mine for a send/return loop in a very simple valve amp I have but it's perfectly capable for hi fi audio.

it's worth noting that this works very well if you turn the knobs slowly because they aren't actually in the audio chain - they are part of the voltage control architecture of the chip

It's also worth noting that it will work on 9 volts if you want to make it into a guitar pedal.



Tuesday, 11 November 2014

Obsidian Overdrive Stripboard Veroboard Layout

This is quite a brutal high gain overdrive by Joe Davisson based on another pedal called the massacre.
it's a very mod friendly circuit - some good places to start are changing some of the capacitors (C1, C6 and C8) for example.
I actually knocked the layout up in 15 minutes but because I have been in so much pain due to a dislocated knee - it took me 2 sittings to actually build it (the valium kicked in 30 minutes into the first half)
anyway it sounds immense
if you have any issues with switching refer to FX Switching

REMEMBER THIS IS A POSITIVE GROUND CIRCUIT - it needs it's own isolated supply eg a battery
otherwise you're going to have a bad time



Sunday, 19 October 2014

Guitar FX Switching Diagrams


I keep getting requests to do some diagrams on how to wire up guitar FX circuits so I've done the ones I use.


Sunday, 12 October 2014

Vox 1901 Distortion Stripboard Layout


Well - it's been a while, I'm in the late stages of moving house and I also dislocated my knee quite badly - I had to shift it back into place myself cause where I fell trapped me.
Anyway all that has prevented me from doing any new projects until now. things are still hectic and I can't walk so it may make things a little sporadic.

I thought I would do another guitar distortion cause I am recording an album at the moment and I wanted to try out the Vox 1901 Distortion so I did and here it is.



Sunday, 20 July 2014

Simple Dual LED Battery Monitor stripboard layout


I got some 3 pin dual LEDs and I thought a good use for them is as little 9v battery status monitors for my guitar pedals. so I came up with this quick circuit that fades from green to red as the battery voltage drops (as shown in the video)

it's a good little mod circuit for any project you want to build that uses a 9 volt battery (or existing stuff you own)




Wednesday, 16 July 2014

Ruby Amplifier Stripboard Layout


I got the schematic of this from http://www.runoffgroove.com/ruby.html - I just wanted to make a really quick test amplifier and the Ruby amp is good for this. it's quite loud relative to its size.

if you want some power amplifiers with more power than this one check out the "Power Amplifier" stripboard layouts on my site. http://www.paulinthelab.com/search/label/Power%20Amplifiers




Saturday, 5 July 2014

Mains Failure Alarm Stripboard Layout


I have a fish tank and in it - lives many tropical fish - however the other day the plug socket switch the heater was plugged into somehow got knocked off. luckily I noticed the heaters light wasn't on and the water temp hadn't dropped so the fish were safe however I wanted to make a little device to warn me if the mains got turned off somehow without having to wire it to the mains directly.

So here we have a little device that starts beeping if the mains is turned off - obviously this is battery powered but the battery should last a long time because it's very low current draw.

the trim pot on the board adjusts the sensitivity of the antenna which is just a piece of wire than you wrap around the cable you want to monitor.


Tuesday, 24 June 2014

Green Wizard Guitar Overdrive Distortion Stripboard Layout


I've been working on this for quite some time. I've always wanted to design my own distortion pedal and finally I have.
I used 2 main parts for this - one is a TL081 general purpose J-FET op-amp and the other is a more special LT1037 op-amp - I chose this for the high-end clarity and low end solidness... haha not really (I don't believe that crap) no, I chose this because it is a very fast and low noise op-amp. it also has input current limiting diodes which affect the type of distortion this pedal gives you. it is also quite low power (in the order of about 2.5 mA)

I did a quick video demonstrating how it sounds which I will attach below.

the name comes from my favourite cartoon growing up - "the flight of dragons"  hopefully I will make 3 more of my own stompboxes for the other 3 wizards in that film.

NB - I put germanium diodes in this and it improved it drastically 









Thursday, 19 June 2014

Ellas Stylophone Stripboard Layout


I have a 2 year old niece called Ella and I wanted to make her something - so I thought I would make her a Stylophone.

NB: there were a couple of errors due to me somehow pressing the "up" button in "DIY layout editor" after I had built this but before I had rendered the image. these errors have been corrected

the original error was; the "tuning board" was listed as being connect to pin8 of IC2 - however it should be connected to pin 7 of IC2
I also missed out "R4" in the schematic (cause I drew the schematic after building it)







Me and Ella

Sunday, 8 June 2014

Hifi OPA2134 General Purpose Preamp Stripboard Veroboard Layout


in my last post I made a RIAA preamp for my turntable and I decided I wanted to make a general purpose hifi preamp for iPods, PCs, and whatever else you need to plug into your HiFi

so here it is - based on the OPA2134 opamp (again)

although I haven't tried it for this, I'm sure it'll work well as a instrument preamp too