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4ms Quad Clock Distributor Expander, Builder'S Manual, Page: 4 / 12

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4ms Quad Clock Distributor Expander Builder'S Manual Download Page 4

B. Insert the female headers as shown. 

Make sure the header pins are flush and vertical-- your QCD 

EXP won't fit together if the header pins are not perfectly vertical!

   

•

2x4 female 
headers x 4

•

1x4 female header
x 1

C. Insert the male headers as shown. Follow the tips in step 4B.

•

2x4 headers x 4

•

1x4 header x 1

Summary of Contents for Quad Clock Distributor Expander

Page 1: ...removing a component if you make a mistake 5 16 3 8 and 1 4 socket drivers optional pliers will work too if you re careful Multimeter for reading resistor values if you don t know the resistor color code chart Step 1 Resistors Diodes Insert and solder the resistors and diodes There are forty five 5 resistors tan body and two BAT 85S diodes Due to variations in components you may find that some res...

Page 2: ... brown black yellow gold The 2 diodes BAT 85S x 2 Note orientation Band arrow tip see pic in Step 3 Step 2 Sockets and Crystal Insert and solder the IC sockets The notch in the sockets should line up with a matching notch drawn on the PCB Finally insert and solder the 20MHz Crystal orientation does not matter see detailed pic in Step 3 8 pin socket x 7 20 pin socket x 1 20MHz Crystal x 1 ...

Page 3: ... the male header pins on the top board first Since the headers fall out easily it helps to put a piece of cardboard or a book over the PCB then flip over the book and PCB together before soldering Peek ahead don t accidentally put male headers where females go Solder one or two pins per header then flip the board back over and check to make sure they are lined up flush to the PCB and the pins are ...

Page 4: ... header pins are flush and vertical your QCD EXP won t fit together if the header pins are not perfectly vertical 2x4 female headers x 4 1x4 female header x 1 C Insert the male headers as shown Follow the tips in step 4B 2x4 headers x 4 1x4 header x 1 ...

Page 5: ... x 4 0 1uF 104 x 1 20pF x 2 47uF x 3 47uF x 3 note the stripe orientation Step 6 Prep Mounting part 1 A First snap your boards apart They are scored down the length and you can just snap them apart with your hands Be careful of the male header pins as these will poke your hands if broken incorrectly B Lay the top board on the control board so that the header pins line up with the female headers C ...

Page 6: ...ing process B Bend the tabs inward a bit and insert the 9mm potentiometers into the PCB Do not solder yet C Insert the jacks into the PCB make sure all pins are through their respective holes Do not solder yet D Insert the 16mm potentiometers into the PCB Do not solder yet E Install one nut at the base of each of the four switches see photo above Then insert into the PCB F Notice the LEDs come col...

Page 7: ...be careful not the scratch the panel D Flip it over and make sure there are no gaps between the jack and the PCB see photo Also make sure the PCB is as close to parallel with the panel as possible Now install the rest of the nuts on the jacks potentiometers and switches You can go slightly tighter than the 1 8 turn to get the panel to fit snug now that we ve verified the hardware is sitting flush ...

Page 8: ...aft of the pot in the direction you need it tweaked while tightening down using your needlenose pliers with the other hand If you have trouble pulling the knobs up by hand to loosen the pot nuts you may have to pry them up with a tool If this is the case make sure you don t scratch the panel or damage the knobs A small screwdriver acting as a lever with a soft cloth underneath to prevent scratchin...

Page 9: ...notches facing up ATTNY2313 28 pin x 1 notch facing up Step 13 Take a break That s right walk away and do something else This is a critical step especially if you are an advanced kit builder or electronics person beginners tend to check their work with more skepticism There are many things you can do wrong in building a QCD Expander that causes it to smoke and destroy components So don t rush have...

Page 10: ...ite stripe on the PCB Before turning on the power supply use the 16 to 16pin cable to attach the EXPANDER header on the QCD Expander to the EXPANDER header on a QCD module The red stripe should be orientated down on both the expander and the main module Power up and tap the QCD s button to set a tempo The lights on the QCD Expander should flash If not unplug immediately and check around for errors...

Page 11: ...en 4V and 6V anything in that range is ok 1 5V can be generated using a SISM channel adjust the SHIFT knob to get 5V 2 Or a MATHS channel 2 or 3 can generate a DC voltage 3 Or many CV sequencers can generate a DC voltage 4 Or a PEG channel with Cycle turned off Bi Polar turned on and Scale set fully CCW all the way down to the left will generate about 5V on the main ENV jack 18 Patch the 5V into t...

Page 12: ...esponse in frequency to the incoming CV If so then the Div Mult CV attenuation section is working but the Pulse Width section is not working A likely culprit is something on or around the ATTINY2313 IC 4 If one or more channels doesn t work but at least one channel does work then you can rule out a bad ATTINY2313 chip 5 If a switch doesn t seem to work verify the pins are actually going through th...

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