Bastl Instruments DUDE v1.2 User manual

last update: 26. 10. 2017
DUDE v1.2 - Assembly Guide
bastl-instruments.com
INTRODUCTION
Welcome to the assembly guide for the DUDE by BASTL INSTRUMENTS. It is a portable battery
operated 5 channel audio mixer with mini jack inputs and output. For all the features go here . This kit
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is suitable for beginners. It is good to have basic soldering skills and to be able to identify electronic
components before starting this kit. However if you have never soldered before, check out some of
tutorials here or here . We also included one of the best quality solder to help you solder everything
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faster and better.
The Dude consists of just one printed circuit board PCB. All the parts comes mainly in two bags
separated for the soldering and assembly parts. Please check all of your parts BEFORE you begin
work to make sure you are not missing anything. See the bill of materials (BOM) for detailed list.
1 http://www.bastl-instruments.com/instruments/dude/
2 https://cdn-learn.adafruit.com/downloads/pdf/adafruit-guide-excellent-soldering.pdf
3 http://www.instructables.com/id/How-to-solder/
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BILL OF MATERIALS
DUDE v1.2 BOM
SOLDERING
qty
value
part
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100R
R-EU_0204/5
14
22k
R-EU_0204/5
1
220k
R-EU_0204/5
1
22pF
ceramic capacitor
8
470nF
ceramic capacitor
2
47uF
electrolytic capacitor
1
1N4007
DIODE-D-7.5
1
L78L06
voltage regulator
2
NE5532
IC in foam
2
8 pin DIL
DIL socket - in foam
6
jack TRS 3.5mm
audio connector
5
OSW5DK7331A
LED 1,8mm white
1
2.1mm
power barrel connector
5
A100k 25mm
logaritmic potentiometer
6
B1702A
button
1
100mA
fuse
ASSEMBLY
2
12 mm nut x nut
spacer
2
M3 x 10mm
screw
1
allen key
2
M3 x 6mm
screw
6
ZIPPY 2P1-2TB-B201A-Z
button cover
1
PCB
1
BH-341-1D
4x 1,5V BATTERY HOLDER
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plastic enclosure
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BEFORE STARTING THE KIT...
Prepare the following tools:
● Soldering iron
● Multi-meter
● Flush cutters
● n2. hex screwdriver or allen key (enclosed with kit)
● Isopropyl alcohol + smaller and clean brush (optional)
● Protective eyewear
We suggest to work in a clean and a well lit and ventilated environment to avoid accidents or losing
any of the small components.
Also briefly go through this guide and make sure that you understand all the steps.
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SOLDERING
RESISTORS
Start soldering with the resistors. There are just three values of them: 22k (14x), 100R (2x), and
220k (1x). Before you will start soldering, check the values by using a multimeter (or you can check
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the color codes if you are seasoned enough). Snip the leads close to the PCB after the soldering (be
sure to make this step on all remaining leads in the course of this guide) and set aside a few of
them. You will use them later.
4 https://learn.sparkfun.com/tutorials/how-to-use-a-multimeter/measuring-resistance
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DIODE
Next solder the 1N4007 diode -be careful, diodes are polarized! Make sure that the grey stripe on
the diode matches the stripe on the PCB.
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JACK CONNECTORS
Add the 3,5mm jack connectors (6x). They have to be soldered precisely down on the PCB. You can
start soldering just one leg of each connector, check it and then do the rest.
IC SOCKETS
Insert the IC sockets (2x; 8 pin DIL). Just be aware of the right direction of sockets - there is a
notch on the sockets that has to match with the ring on the PCB.
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CERAMIC CAPACITORS
Move to the ceramic capacitors now. First solder the 22pF cap (1x) which is marked "220".
Then do the 470nF ones (they are marked "474" on itself and there are eight of them).
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LEDs
Solder the LEDs now - these are polarized too! Be sure to insert the longer lead into the plus (+)
hole. Place the LEDs down to the PCB. It is better to solder just one leg first and then do the
adjustments by resoldering and repositioning at the same time.
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VOLTAGE REGULATOR
Now you can do the voltage regulator (L78L06). The flat side has to match with the printing on the
PCB.
ELECTROLYTIC CAPACITORS
Don't forget to solder also the two electrolytic capacitors (47μF). These ones are polarized! There
is a plus (+) sign on the PCB that should match the longer lead of the electrolytic capacitor (actually
the minus (–) side is also marked on the body of the capacitor with a white strip).
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FUSE
There is also one fuse (100mA) to solder. It is not polarized and it looks almost like a ceramic
capacitor. Then snip the overhanging lead a little bit.
POWER CONNECTOR
Let's add the power connector. Just be sure to solder it flat with the PCB and straight.
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BUTTONS
Go for the button switches now. Be aware that these parts have to be oriented! There is a marked
line on the one side of button which has to be oriented upwards. Remember to solder these switches
straight. See the pictures before soldering.
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POTENTIOMETERS
Move to soldering of potentiometers (A100k). Install them in straight (you have to push them down),
solder just one side leg, check the position and do the re-heat and repositioning adjustments in need.
Then solder the rest if there is no problem. Remember - they have to be soldered straight really
seriously!
DOUBLE CHECK
Take your time now and relax for a while. Do the last double check of all soldered joints at this
point. After next steps it would be MUCH HARDER to do any repairment.
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CLEANING (OPTIONAL)
Before you begin to move forward, you might want to clean your PCB. You can use e.g. isopropyl
alcohol. Put some of the liquid all over the PCB using the brush, let it act for a while and sweep it off.
Then just let it dry. You can repeat these steps until you are satisfied with the result.
ICs
Don’t forget to place the two ICs into the sockets (NE5532P). There is a signed notch on each IC
that has to match with the notch on the socket. Installing ICs can be also a little tricky. You should
bend the IC leads in slightly with your fingers first. Then press all the leads into the sockets in one
shot
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BATTERY HOLDER
Before placing the battery holder you have to do a little adjustments. See the photo and first cut the
signed legs.
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Take the remaining leads then and solder them into the holes near the power connector. It is good to
melt some solder into the holes first and then reheat them and place the wire inside.
Let's secure the battery holder now with the spacers and screws (the longer ones) from the bottom.
Watch out for the orientation of the holder!
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Now you will do the soldering. You have to connect the leads with the lugs. Do not let the lug heat
too much! (it would break the connection of the coil and the lug) Use just the tip of your soldering iron
for a second.
YOU ARE ALMOST DONE...
Now you can complete the Dude with the plastic enclosure parts. Start with the button covers. Push
them on the buttons.
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Then place the side parts (push them just in the corners).
Finish the enclosure with the top cover and mounting the screws.
Here it is, your Dude is finally completely alive! Congratulations!
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TROUBLESHOOTING
Check the F.A.Q. on our website first. If you are still in trouble the best thing is to take a nap!
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Especially late at night! Then you can can send the detailed description of the problem with enclosed
high-resolution photos on [email protected]. Consider our “Come to Daddy” service if you
think that you are unable to make the instrument work on your own.
5 http://www.bastl-instruments.com/diy-kits-f-a-q/
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