Rebel Technology Witch User manual

Witch v1 Rev. May22 - ASSEMBLY GUIDE
THANKS FOR CHOOSING ONE OF OUR KITS!
This manual has been written taking into account the common issues that we often find people experience in
our workshops. The order in which the components are placed on the board is meant to make assembly as
easy as possible.
Some steps are not obvious, so even if you're an experienced DIYer please read the steps thoroughly before
starting. If this is your first project, please read this article before you start assembling the kit:
www.befaco.org/howto/
You will be soldering both boards at the same time. Keeping them in the panel together, until stated to split
them, might help you through the build. Check the last pages of the Build for PCB pics to help you identify
components.
OPEN BAG A
RESISTORS
It’s strongly recommended to measure the resistors with a multimeter. Color code might be hard to read
with blue background.
Qty
Value
Code
Name on PCB
10
100Ω
Brown, black, black, black, brown
R9, R12, R13, R16, R22, R36, R41, R47, R52,
R57
14
560Ω
Green, blue, black, black, brown.
R20, R21, R25, R27, R28, R29, R30, R33, R48,
R49, R59, R64, R65, R67
8
1k
Brown, black, black, brown, brown
R19, R23, R24, R32, R34, R35, R43, R58
8
100k
Brown, black, black, orange, brown
R1, R2, R53, R55, R61, R62, R63, R66
6
5k1
Green, brown, black, brown, brown
R8, R17, R39, R40, R42, R46
6
10k
Brown, black, black, red, brown
R26, R31, R44, R45, R50, R51
4
33k
Orange, orange, black, red, brown
R10, R11, R14, R15
4
51k
Green, brown, black, red, brown.
R4, R5, R6, R7
4
1M
Brown, black, black, yellow, brown
R54, R56, R60, R68
2
22Ω
Red, red, black, gold, brown.
R3, R38
2
2k
Red, black, black, brown, brown.
R18, R37
DIODES
Solder the diodes observing their polarity. The black or white line on the diode must match with the white
line on the diode symbol on the PCB silkscreen.
Qty
Value
Name on PCB
8
BAT85/48
D1, D2, D3, D4, D5, D6, D7, D8
1
1N4007
D9
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Witch v1 Rev. May22 - ASSEMBLY GUIDE
CAPACITORS
Identifying capacitors can be quite tricky. Codes stated are indicative and might change from batch to
batch, please take a look at this guide for help identifying capacitors:
http://www.wikihow.com/Read-a-Capacitor
Qty
Value
Code
Name on PCB
4
220p
221
C7, C11, C20, C22
4
2.2n
2n2
C2, C13, C18, C23
4
10n
10n
C4, C8, C9, C10
3
100n
104
C15, C25, C27
2
4n7
4n7
C12, C17
2
1nf
102
C14, C16
8
10uF (POLARIZED!)
10uF
C1, C3, C5, C6, C19, C21, C24, C26
FUSE
Qty
Code
Name on PCB
2
x50
F1, F2
REGULATORS AND TRANSISTORS
Make sure it is positioned correctly with reference to the silkscreen outline on the PCB
Qty
Code
Name on PCB
6
2n3904
T1, T2, T3, T4, T5, T6
1
AMSR 78L05
U2
IC SOCKETS
First we will place the sockets (taking care to orientate them properly – the notch on one end of the
socket should match the silkscreen) and solder them into their correct positions. Get them from ICs bag.
Qty
Value
Name on PCB
1
DIL8
IC2
1
DIL14
IC1
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Witch v1 Rev. May22 - ASSEMBLY GUIDE
ICs
Place ICs in their sockets. Take care of polarity, notch or dot mark orientation.
Qty
Value
Name on PCB
1
MCP6022
IC2
1
MCP6024
IC1
OPEN BAG B
This is the point to split both Boards apart. Use pliers to help you and make sure to carefully remove
the locating tabs. Leaving board edges flat!
SPACERS
Secure the nylon spacer onto the CONTROL PCB (in the hole between DC Jack and Output minijack) with
one of the included screws.
PIN HEADERS
You have two 1x40 long pin strips. This should be enough for all your needs and leave you a few spares
just in case some get damaged when cutting.
Place the headers, Make sure they are straight. Then solder them.
Qty
Type
Size
Place on PCB
2
Socket
1x10
JP2, JP4
2
Pin
1X10
JP1, JP3
TIP: Place the pin headers on both pcbs and connect them before solder.
In order to place the owl board properly straight, we will first place the sockets on the PCB then the pin
headers into the sockets. Its the long pin that will fit into the sockets. This will give the right placing for the
owl platform. Do this gently, Once all pins are in place, proceed to solder them all. Remove Owl board
from the PCB to continue with the assembly.
OWL PIN HEADERS
Place all pins on control PCB at silkscreen side side, Solder them making sure they are straight.
Qty
Size
3
1x5
1
1x10
2
1x12
1
1x3
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Witch v1 Rev. May22 - ASSEMBLY GUIDE
Now we will proceed to mount the mechanical parts. This part of the assembly is CRITICAL. Please take
your time and read the following instructions carefully.
These components must NOT be soldered until they are placed on the PCB and fully attached to the front
panel.
USB CONNECTORS
Place USB connectors but don't solder them yet.
MINIJACKS
Place the mini-jacks on the PCB ensuring they are on the side with the silkscreen but don't solder them.
Qty
Value
Name on PCB
2
Stereo jack (green)
Stereo, on the upper part of the pcb.
12
Mono jack (black)
BUTTONS
Place the buttons on the PCB ensuring they are on the side with the silkscreen but don't solder them.
Qty
Value
Name on PCB
4
Led push
button
There is a hole in the PCB that mark where the notch in the bottom of the
button goes. You can also orientate the red stripe to the right of the PCB.
1
Tactile switch
SW5
Place also the switch cap. Be sure to place it straight and flush
to the PCB.
POTS
Place them on the PCB but... don't solder it yet!
Qty
Value
Name on PCB
5
10k Linear
P1,P2, P3, P4, P5
LEDS
Place LEDs, minding polarity. Flat side in silkscreen is negative pad. Short leg from the Led is the
negative. Do not solder it yet.
DC connectors
Put the DC connector in place but do not solder it.
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Witch v1 Rev. May22 - ASSEMBLY GUIDE
FRONT PANEL
Attach the front panel adjusting the parts one by one if necessary until they fit. First Mini-jacks then Pots
and DC connector. Use the red nuts for all Outs, the smaller black nuts for the rest of the minijacks and
the larger black ones for all pots. Ensuring all of the above parts are flush with the panel.
Solder Mini-jacks, pots, dc connector and the USB Type B connector. Then connect the USB cable to the
USB A connector, this will help you to be sure that the connector is perfectly align with the hole on the
panel, solder now the connector with the cable still plugged in, remove the cable when all the pins of the
USB A are soldered. Now press all buttons to make sure they are flat with the PCB and all pins in their
right place (beware no bent legs!), proceed to solder them.
Adjust the LEDs so that they are flush with the panel and solder them.
FINISH YOUR BUILD!
Connect both PCBs together. Making sure PCBs shape and spacer fits with its hole. Then Proceed to put
in place OWL board.
Now put the yellow cardboard on the bottom of the hammond case, place the the witch, and secure it with
the screws.
ENJOY YOUR NEW BEFACO MODULE!
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Witch v1 Rev. May22 - ASSEMBLY GUIDE
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