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Thonk Spring Reverb Instructions Manual

Eurorack diy kit, music thing modular
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Music Thing Modular
Spring Reverb Module
 
 
OVERVIEW
For the most recent version of this
document please visit
http://thonk.co.uk/documents/springreverb/
For all technical support please visit
http://bit.ly/196uq9j
This document must be read in conjunction
with the Music Thing Modular user manual
http://bit.ly/197HL0U
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
Adafruit guide to excellent soldering –
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 -
October 25
on Muffwiggler.
th
2013
www.thonk.co.uk
Eurorack DIY Kit
Instructions
http://youtu.be/I_NU2ruzyc4
http://bit.ly/1l77tF4  
http://bit.ly/1jxqF3n
Version 0.9
and the
1

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Summary of Contents for Thonk Spring Reverb

  • Page 1 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...

  • Page 2: Solder Joints

    Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     SOLDER JOINTS Your solder joints should look like those shown as ‘OK’ below, they should have that neat conical shape on BOTH sides of the PCB. If they don’t look the same on both sides then stop! Work out why from the soldering guides linked and don’t continue until you are getting those results.
  • Page 3 Version 0.9 Spring Reverb Module Instructions     SPRING REVERB BUILD INSTRUCTIONS Start by emptying the Resistors and Capacitors bag into one bowl or container and the Main Bag into another. This makes it much easier to pick parts as you need them and you’re less likely to lose anything.
  • Page 4 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     Next solder the four 100n capacitors. They come in a strip of 8 parts and are Dark Yellow in colour rather than blue as shown in the PCB image.
  • Page 5 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     Take the protective pink ESD bag with yellow sticker out of the main bag and find the 2N3904 transistor. The middle lead needs to be bent...
  • Page 6 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     Notch! Next you should solder in the 8 pin and 14 pin IC sockets. Make sure these sockets are soldered flush and perpendicular to the PCB surface.
  • Page 7 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     Next solder the 5 pin female socket into position. Next you need to make a small modification to the 3 pots. You need to snap, cut or file off the small metal tag that protrudes from the top surface of the pot body as indicated.
  • Page 8 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     B50K B10K Next position the four jacks and three pots and single LED in place on the board but DO NOT SOLDER any of them yet.
  • Page 9 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     You didn’t solder the pots and jacks yet did you? Good! Put the faceplate on (White PCB material or Aluminium) and tighten a few nuts on to make sure everything is sitting true and flat.
  • Page 10 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     Go back to the ESD bag and take out the TL074CN and NE5532P IC’s. In order to fit them into the IC sockets you need to bend the pins inward slightly.
  • Page 11 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     2.2K First solder all the resistors on the PCB. There are no vertical resistors on this PCB. 2.2K 4.7K Solder the single 10n capacitor into place at C3 (in labeled bag.) Solder the single 2.2n capacitor into...
  • Page 12 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     solder single 22uF Electrolytic capacitor into place at position C8. NOTE! Orientation is vital on this part. The grey stripe should be positioned as shown and the shorter lead of the component should go into the hole marked ‘-‘...
  • Page 13 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     Solder the yellow fuses and the two black diodes into place. NOTE! Take care with the orientation of the silver ends of the diodes which match the thick white stripes on the silkscreen.
  • Page 14 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     If you use organic solder that can be washed with water then now is a NOTE! If you wash the board, put good time to do that. Make sure you the shunt somewhere safely first.
  • Page 15 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     Screw in the two brass hex spacers into place. Make sure you use two of the shorter machine screws, not the two longer screws which are provided to mount the finished module into your case.
  • Page 16 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     It’s time to join the two PCB’s together as shown, mating with the male and female 5 pin headers in the centre of each board. Use the two remaining small machine screws to secure the brass hex spacers.
  • Page 17 Even with a lip you may find that one or both nuts on the RCA jacks can make contact with the Aluminium rail. This wonʼt damage the module but it will stop the real spring reverb working. You may want to consider putting thick insulating tape on the inside edge of the case rail to stop this happening.
  • Page 18 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     Wire up the RCA jacks as shown. You need to strip, twist and tin the ends of the wires with a small amount of solder. You need to do this neatly, particularly the end that solders to the PCB, or it won’t fit through the holes.
  • Page 19 Music Thing Modular Eurorack DIY Kit Version 0.9 Spring Reverb Module Instructions     The module is now complete. Affix the power cable as shown with the red stripe down. The trimming and calibration process is detailed in the Music Thing Modular documentation linked below, if you don’t follow it you can easily end up with...