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PROK DRUMS
Eurorack DIY Kit
Version 1
Instructions
OVERVIEW
For the most recent version of this
document please visit
https://thonk.co.uk/documents/prok/
This document has hi-res images. ZOOM
IN for a closer look
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
http://youtu.be/I_NU2ruzyc4
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 or tweezers, masking tape, craft knife or
scalpel 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
December 14th 2018
www.thonk.co.uk
1
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Summary of Contents for Thonk Eurorack DIY Kit
- Page 1 This document has hi-res images. ZOOM IN for a closer look 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.
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Page 2: Solder Joints
PROK DRUMS Eurorack DIY Kit Version 1 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: Back Board
PROK DRUMS Eurorack DIY Kit Version 1 Instructions PROK DRUMS BUILD INSTRUCTIONS There are two PCBs used in this build - they are referred to as the front PCB and the back PCB. They identified locating the text on each PCB as shown. - Page 4 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Start by soldering the single 5.6K resistor into the position labelled R4 as shown. Next solder the single 39K resistor into position R3. Next solder the three 56K resistor into positions R5, R6 and R7.
- Page 5 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Next locate the SMD voltage regulator which is packaged as shown. Do not remove it from its packaging yet - complete the next step first. Next locate the position for the SMD regulator on the PCB as shown.
- Page 6 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Now using tweezers or snipe nose pliers - take the voltage regulator and position it flat on the surface of the PCB as shown. Then re-heat the pad that we already applied solder to, and...
- Page 7 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Now carefully solder the three remaining legs. If you need to add more solder to the first pad then you can – just be careful not to overheat the component. Next solder in the two IC sockets.
- Page 8 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Next solder four 10uF electrolytic capacitors as shown. NOTE! Orientation is vital for this part. The grey stripe and shorter leg signify the negative side of the capacitor, the short lead of...
- Page 9 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Turn the teensy over so you’re looking at bottom side, then locate the two SMD pads as marked in the picture. If you look very closely or with a magnifying glass, you will see that there is a tiny trace between the two pads.
- Page 10 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Next take the long male pin header and break it into 3 different lengths: 1 x 14 pin length 1 x 13 pin length 1 x 2 pin length If you are using side cutters to do this be sure to wear safety goggles.
- Page 11 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Now take the 14 pin, 13 pin and 2 pin female header lengths and place but DO NOT SOLDER them on the PCB as shown. NOTE: These are placed on the bottom of the PCB on the same...
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Page 12: Front Pcb
PROK DRUMS Eurorack DIY Kit Version 1 Instructions FRONT PCB On the front board start by soldering 470R resistors into R17 and R18. Next solder the single 100K resistor into R19. Now solder four of the five 1.5K resistors into R11, R12, R14 and R15. - Page 13 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Next solder in the two BAT42 diodes into D7 and D8 as shown. NOTE: Take care with the orientation of the black stripes on the diodes – these should match the black stripes on the PCB silkscreen.
- Page 14 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Next bend the leads for the two remaining 27K resistors and then place them standing into R10 and R21 as shown. NOTE: Make sure you solder the resistor bodies as shown in the picture –...
- Page 15 Version 1 Instructions Now place but DON’T SOLDER the button, four jacks, SD card holder, and two pots as shown. Thonk kits may include either D- Shaft or T18 shaft pots. Remember! Orientation is vital for the switch button – make sure the flat edge matches the PCB silkscreen as shown.
- Page 16 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Next take the female headers that were put aside earlier and place them onto male headers as shown. Now take the back PCB and fit the female header pins into the holes as shown. Then solder the female header pins onto the back board.
- Page 17 PROK DRUMS Eurorack DIY Kit Version 1 Instructions Next place on the front panel and secure it with all nuts and washers. Then take some masking tape and use it to hold the LEDs so they are flush with the front of the panel as shown.
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