Lithium Grim OmniMuff, Инструкция по сборке

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OmniMuff v1.0
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6
Build sequence
Soldering this board can be very complicated for some people since the solder pads are very close
together. Use a magnifying glass to make the job easier. The trick to soldering a PCB is to work from
small to big components. My building sequence suggestions in this section are based on the parts I
used myself. Sometimes some components are smaller (or bigger) so always use your own common
sense and change the order accordingly. Usually capacitors can differ a lot in size depending on their
rating and value.
Note: Do not blow on your solder in an attempt to cool it down. That can result in a bad join that
might corrode!
Start by soldering the jumpers where needed. Next, solder the resistors and diodes.
If you want to experiment with other transistors then you could socket them instead of soldering
them to the board. You’ll need a some 20 SIL sockets, break off the sockets and solder them to the
board. Now is the time to solder these sockets on the PCB. Place the transistors only once you are
finished with all soldering and off board wiring!
Note: Orientation of the transistors vary for each different type you use. For this reason I marked the
pinout on the board for your convenience. I also added a graphic line to indicate the flat side of the
transistor when using a TO-92. This is based on the 2N5088 transistors. Other types possibly need to
be rotated! Always consult the datasheet of the transistor and orient accordingly.
Now continue by soldering the small capacitors (MLCC) then the small SMF, trimpot and then the
Electrolytic capacitors. There are some configurations with hard to find values capacitors. If you
cannot find 500pF for
C3 , C8 and C12 , you can use 1n in series to get 500pF. So 1n in both C3 and C4 ,
C12 and C13 , C8 and C9 . For the 50n in C7 and C11 you can just use 47n.
I suggest you now drill the holes in your enclosure so you can use it during the off board wiring. Try
to keep wires as short as possible.
Note: Really take some time to determine where to place the pots, switches, jacks and PCB in the
enclosure before you start drilling. Measure twice, drill once.
You are almost ready to rock , well… not really . The difficult part starts now. Besides the components
mentioned in the components table, you will need:
•
2 input jacks . 2 mono jacks if you are not going to use a battery but only the 9V adapter. 1
mono (for output) and 1 stereo jack (for input) if you will be using both a 9V battery and the
9V adapter.
•
1 x 3PDT footswitch (9 pins)
•
2,1mm DC jack (isolated) center negative.
•
9v battery clip (optional).
•
22 gage stranded hook-up wire.
•
A LED holder and LED. This enables you to mount the LED in the enclosure.
•
Hammond 1590BB enclosure . Painted in your favorite color.