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DEIMOS GERMANIUM FUZZ

24

ENCLOSURE LAYOUT: INPUT/OUTPUT PCB

Affix the input/output PCB to the north-facing panel of the enclosure as shown.

Note the use of two mounting nuts on each of the jacks, one inside and one outside. The inner nut acts as
a spacer to set the DC jack flush with the outside of the enclosure. The inner nuts should be threaded as
far down as they can go.

125B

MOUNTING NUT

LOCK WASHER

OUTER WASHER

MOUNTING NUT

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Summary of Contents for DEIMOS

Page 1: ...music world forever Germanium fuzz 1 0 1 2022 07 01 BUILD DIFFICULTY This documentation is for the kit version of the project If you purchased the PCB by itself please use the PCB only version of the...

Page 2: ...rs Non Polarized 15 Wire Headers 16 Capacitors Polarized 17 Germanium Transistors Introduction 18 Germanium Transistors 19 Footswitch PCB 20 Input Output PCB 21 Enclosure Layout Panel Mounts 22 Enclos...

Page 3: ...to learn a few things along the way This will take time Plan on about two hours start to finish It may take even longer if it s your first time building Don t rush it If you find yourself getting frus...

Page 4: ...ssing Parts form Film Capacitors NAME QTY 10n 0 01 2 100n 0 1 1 Electrolytic Capacitors NAME QTY 4 7uF 3 10uF 1 47uF 1 100uF 1 MLCC Capacitors NAME QTY 100n marked 104 1 470n marked 474 1 Diodes NAME...

Page 5: ...er jack 0 6 2 Lock washer jack 0 5 thin 2 Enclosure 1 Enclosure screws 4 PCB main circuit 1 PCB footswitch 1 PCB input output DC 1 Switches NAME QTY Toggle switch DPDT on on 1 Mounting nut toggle swit...

Page 6: ...solder NEEDLE NOSE PLIERS These are used for bending leads on components and other general uses Use the smaller type with a tip that s approximately 0 05 1 25mm wide FLAT SCREWDRIVER SMALL This is us...

Page 7: ...LED BEZEL WIRE ASSEMBLY ELECTROLYTIC CAPACITOR GERMANIUM DIODE OP AMP IC TANTALUM CAPACITOR SCHOTTKY DIODE IC SOCKET TRANSFORMER MLCC RECTIFIER DIODE TRANSISTOR OR JFET Not polarized Color may vary by...

Page 8: ...SWITCH POTENTIOMETER SINGLE FOOTSWITCH POTENTIOMETER DUAL MOUNTING NUT MOUNTING NUT MOUNTING NUT MOUNTING NUT DRESS NUT OUTER WASHER DRESS NUT OUTER WASHER KNOB LOCK WASHER LOCK WASHER LOCK WASHER LOC...

Page 9: ...PCBs shown to the right The general principle for PCB population is that you want to work in layers from shortest components i e lowest profile to tallest so that when the PCB is upside down everythi...

Page 10: ...they will work in any direction Turn the board upside down to keep the components held in place while you solder You ll use this same technique for most of the other components as well If it gets too...

Page 11: ...nly one on each board so this step is pretty simple The 1N5817 is black with a silver stripe while the 1N4742A is orange with a black stripe Diodes are polarized so make sure to identify the polarity...

Page 12: ...citors This information is just listed here for reference The legs of the IC are bent outward slightly during manufacturing so they ll need to be bent back inward before they can be inserted into the...

Page 13: ...e making it out you can hold it at an angle to a light source and it should be much easier to see The 100k trimmer for Q2 BIAS is marked P 104 while the 10k trimmer for Q3 BIAS is P 103 The two trimme...

Page 14: ...olarized and will work in any direction To keep things neat though it s best to put them all facing the same way so the values can easily be read Note C1 and C6 box film capacitors may be either blue...

Page 15: ...tors as shown above These have a polarity pin so as long as they are pressed all the way down there s only one possible way to install them They do fit pretty tightly in the holes though so press firm...

Page 16: ...k in one direction so note the vertical mark that indicates the negative side The longer leg is positive and fits in the square pad At this point we only have the transistors left to do so now is a go...

Page 17: ...them and only one at a time to avoid inadvertently mixing them up They are not visually distinguishable from each other and outside of the bags there is no way to tell which is which The pedal won t s...

Page 18: ...istors The third diagram shows a side view Make sure there s some clearance above the resistors The resistors are electrically insulated so it s not going to cause any problems if the metal body of th...

Page 19: ...later step PARTS 3 strand wire assembly 2 4 strand wire assembly STEP 3 Then solder the wires from the top This is the trickiest part of the whole build You want to solder the pads without touching t...

Page 20: ...is in place and you don t want the pins to short against anything on accident Next we ll hook up the 9V battery connector This is optional Not everyone uses batteries But if you do this pedal should...

Page 21: ...he mounting nut and is for aesthetic purposes only Wrap a rubber band around it to use as a grip when tightening Do not use metal tools on it or you run the risk of scratching or denting it You ll nee...

Page 22: ...UNTS CONT MOUNTING NUT MOUNTING NUT LOCK WASHER TOGGLE SWITCHES The dress nut acts as a mounting nut unlike the footswitch dress nut Use flat nose pliers on the flat sides of the nut to tighten secure...

Page 23: ...e main PCB on top of the potentiometers and toggle switches as in the diagram to the left You may need to adjust the position of the potentiometers and toggle slightly if they are not aligned straight...

Page 24: ...f the enclosure as shown Note the use of two mounting nuts on each of the jacks one inside and one outside The inner nut acts as a spacer to set the DC jack flush with the outside of the enclosure The...

Page 25: ...ds marked Q3 TEST Turn up the Q2 trimmer until the Q3 test pad reads 8 5V either positive or negative depending on which lead is touching which pad Then with the black lead touching ground measure eac...

Page 26: ...ng a small flat head screwdriver no more than 0 1 2 5mm in diameter tighten the set screw until it presses against the shaft of the potentiometer and holds the knob in place Don t over tighten or you...

Page 27: ...2 TC1044SCPA 10uF PWR_GND PWR_GND 47uF VA PWR_GND GND GND VA Q2 GND 47k VA Q3 8k2 470R VA 100k 10n GND GND 4 7uF GND 100kB 10kB 100R 4 7uF 470n RPD D1 C7 LEVEL 1 2 3 FUZZ 1 2 3 IN OUT C11 C2 C1 R1 Ge...

Page 28: ...10n 0 01 C2 4 7uF electro C3 100n 0 1 C4 4 7uF electro C5 4 7uF electro C6 10n 0 01 PART VALUE R6 100k R7 100R RPD 2M2 LEDR 4k7 PART VALUE C7 100uF electro C8 10uF electro C9 47uF electro C10 470n ML...

Page 29: ...circuit The easiest spot is inside a tapped screw hole in one of the corners of the enclosure This way the probe stays in place without needing to use alligator clips The circuit must of course be ful...

Page 30: ...site There is no guarantee that we will be able to join the discussion and help solve your problem but this improves the chances It benefits the whole community if the troubleshooting process is publi...

Page 31: ...trademark holders These kits are intended to be built by the customer Aion FX is not responsible for language that may be used by the customer in the marketing or resale of the finished product All co...

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