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Oct 5

th

 2015 

www.thonk.co.uk 

Vactrol Mix 

Eurorack DIY Kit 

Instructions 

Version 1.1 

  

VACTROL MIX OVERVIEW 

 
For the most recent version of this 
document please visit – 

https://thonk.co.uk/documents/turing/

 

 
 

For all technical support please visit this 
thread on Muffwiggler - 

http://bit.ly/1VzDXPR

 

 

NOTE IF YOU ARE USING A NEW STYLE 
ALUMINIUM PANEL THEN TAKE CARE 
TO READ THE SECTION ON LEDS 
CLOSELY. 

 

 

 
All  Thonk  kits  are  sold  under  our  standard  Terms  and  Conditions  - 

http://www.thonk.co.uk/faq/

 

 
 

DIY INSTRUCTIONS 

 
This document gives detailed instructions that assume you have purchased a 
complete kit from 

www.thonk.co.uk

. It also assumes no previous knowledge 

of electronics.  
 
To learn to solder try 

https://www.youtube.com/watch?v=IpkkfK937mU

 and 

the 

Adafruit guide to excellent soldering

 – http://

bit.ly/1l77tF4  

 

Watch and understand that whole YouTube video! If you’re not achieving the 

results shown in the video then you need to buy new tools or seek advice. 

You will not end up with a working module otherwise. 

 

TOOLS REQUIRED 

 

Soldering iron, snipe nose pliers, wire strippers, small flat head screwdriver 
and diagonal cutters AKA snips AKA side-cutters. A Digital Multimeter is 
always helpful for checking for bad solder joints and continuity. Thonk sell a 
range of inexpensive tools here - 

http://bit.ly/1jxqF3n

 

 
 
 
 

Summary of Contents for VACTROL MIX

Page 1: ...assume you have purchased a complete kit from www thonk co uk It also assumes no previous knowledge of electronics To learn to solder try https www youtube com watch v IpkkfK937mU and the Adafruit gu...

Page 2: ...h sides then stop Work out why from the soldering guides linked and don t continue until you are getting those results This isn t about perfectionism you are very likely to end up with a destroyed dam...

Page 3: ...container This makes it much easier to pick parts as you need them and you re a lot less likely to lose anything 2 First identify and solder the two 1K resistors into positions R7 and R8 3 Next ident...

Page 4: ...TE ENSURE THE NOTCH IN THE END OF EACH SOCKETS MATCHES THE NOTCH ON THE PCB SILKSCREEN 7 Solder the two 100n caps into positions C1 C2 8 Next position these items into position but DO NOT SOLDER yet 1...

Page 5: ...Check all the LEDs have dropped back again and are touching the front panel and are perpendicular to the PCB surface Now solder all the loose items that s 52 solder joints double check you didn t mis...

Page 6: ...hown on the PCB 13 Next open the silver ESD packet and put the TL072 and TL074 IC s into position as shown NOTE Orientation is vital NOTE You will need to bend the pins on the IC inwards slightly so t...

Page 7: ...s are for the pots Do not over tighten the pot nuts or you can shatter the acrylic panel 15 The Vactrol Mix is attached to the GATES output of the BACKPACK If you also have a Voltages you just daisy c...

Page 8: ...Oct 5th 2015 www thonk co uk 8 Vactrol Mix Eurorack DIY Kit Instructions Version 1 1 CONNECTING VACTROL MIX PULSES CONNECTING VACTROL MIX VOLTAGES PULSES...

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