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NYSTRÖM Crum Drum
Eurorack DIY Kit
V1.5
Instruc9ons
NYSTRÖM - Crum Drum
Build Document
PLEASE DO NOT LINK TO OR REDISTRIBUTE THIS DOCUMENT WITHOUT PERMISSION FROM THONK
For the most recent version of this document please visit –
https://www.thonk.co.uk/shop/crum-drum
All Thonk kits are sold under our standard Terms and Conditions -
http://www.thonk.co.uk/faq/
1
23
rd
June 2023
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Summary of Contents for nystrom Crum Drum
- Page 1 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons NYSTRÖM - Crum Drum Build Document PLEASE DO NOT LINK TO OR REDISTRIBUTE THIS DOCUMENT WITHOUT PERMISSION FROM THONK For the most recent version of this document please visit – https://www.thonk.co.uk/shop/crum-drum All Thonk kits are sold under our standard Terms and Conditions - http://www.thonk.co.uk/faq/...
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Page 2: Tools Required
NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons DIY INSTRUCTIONS This document gives detailed instructions that assume you have purchased a complete Turing Machine kit from www.thonk.co.uk after April 2016, it also assumes no previous knowledge of electronics. and the Adafruit guide to To learn to solder try https://www.youtube.com/watch?v=IpkkfK937mU... - Page 3 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons This document has hi-res images. ZOOM IN for a closer look A schematic can be found on the last page of this document. 1. First, using the coloured chart provided, locate the single...
- Page 4 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 3. Next locate all the female sockets. These are used to a]ach the teensy onto the PCB. 5 Pin Headers (x3) There should be 3 different 6 Pin Headers (x6) lengths of socket in the kit bag,...
- Page 5 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 4. Now locate the low-profile male headers. The kit includes three lengths of 20 pins and one pre-cut length of 5 pins. Two of the 20 pin headers need to be split into lengths of 18, while...
- Page 6 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 5. Once the above has been checked, carefully place the Teensy onto the headers as shown, ensuring that all headers are inserted fully. Placing the Teensy on to the pins is quite a delicate task and you...
- Page 7 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 6. With the above steps complete - flip the board over and solder two opposite corner pins of the female sockets. Check the female headers are sifng flush to the PCB and reflow and adjust if they are not completely flush.
- Page 8 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 8. Place the DAC board on top of the headers as pictured. Ensuring the pins are flush with the board, first solder the DAC Board onto the pins from the top side.
- Page 9 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 10. Next locate the single 2N3904 transistor from the components bag. NOTE: ORIENTATION IS VITAL Solder into the posi9on shown ensuring the flat edge of the body lines up with the flat edge on the PCB silkscreen.
- Page 10 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 12. For the next stage secure the 11mm spacers to the PCB as pictured, using any four of the screws provided. These will be removed again before the final assembly but are necessary at this stage to ensure the remaining mechanical components sit correctly.
- Page 11 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 13. With the spacers in posi9on locate the following parts and place but don’t solder yet on the PCB. 13x B10K Pots 2x On-Off-On Toggle Switches 2x Bu]on Switches 4x LEDS IMPORTANT: DON’T SOLDER YET...
- Page 12 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 14. Place the frontpanel over the top of the components ensuring all parts are inserted fully through the holes. Secure both toggle switches against the panel with the nuts provided and use the pot nuts and washers to secure a few of the pots as pictured.
- Page 13 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons Ensure you use the long screws at this point otherwise the next stage will not work. Repeat for each corner of the back panel and then apply the four s9cky feet as pictured.
- Page 14 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons 19. For the final step replace the front panel lining up all components and securing in place with the 4 x remaining 6mm black screws. Secure all pots and switches with their nuts and washers, and finally add the knobs and yellow switch caps.
- Page 15 NYSTRÖM Crum Drum Eurorack DIY Kit V1.5 Instruc9ons +3.3V +3.3V +3.3V filtPot volPot swingPot Filter swing +3.3V +3.3V +3.3V drivePot delayPot reverbPot UDA1334A drive delay reverb VIN 1 SCLK +3.3V 3V3 2 GND 3 MUTE 2N3904 +3.3V +3.3V +3.3V DEEM ClockOut TEENSY4.1...
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