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last update: 20. 7. 2017
60 KNOBS - Assembly Guide
bastl-instruments.com
INTRODUCTION
Welcome to the assembly guide for the 6 0 KNOBS k it. 60 Knobs is a midi-controller, designed
specifically for the Sonic Potions' LXR drum machine. For all the features see the manual
h ere
.
This kit doesn't require too much experience. However, it is good to have basic soldering skills and to
be able to identify electronic components before starting it. We have also included some of the best
quality solder to help you solder everything faster and better.
60 KNOBS kit consists of just one big printed circuit board (PCB), soldering components and
mounting components for both enclosure versions. The plastic enclosure is sold separately. 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
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Summary of Contents for Bastl Instruments 60 KNOBS
- Page 1 INTRODUCTION Welcome to the assembly guide for the 6 0 KNOBS k it. 60 Knobs is a midi-controller, designed specifically for the Sonic Potions’ LXR drum machine. For all the features see the manual h ere...
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Page 2: Bill Of Materials
BILL OF MATERIALS 60KNOBS_V.1.0 SOLDERING BOM value part 220R resistor 100k resistor resistor 1N4148 DIODE-D-5 1N4007 DIODE-D-7.5 100nF ceramic capacitor 330nF polyester capacitor 47uF electrolytic capacitor 7805 voltage regulator 100mA fuse 8 pin DIL DIL socket - in foam 16 pin DIL DIL socket - in foam 28pin DIL DIL socket - in foam... - Page 3 BEFORE STARTING THE KIT... Prepare the following tools: ● Soldering iron ● Multi-meter ● Flush cutters ● n2. hex screwdriver or allen key (enclosed with kit) ● Phillips screwdriver ● Isopropyl alcohol + smaller and clean brush (optional) ● Protective eyewear ●...
- Page 4 SOLDERING Start with the smallest parts - r esistors and d iodes . There are three values of resistors: 2 20R (2x) and 1 00k (2x) and 1 k (1x) - take your time and check those values u sing a multimeter (or you can check the color codes if you are seasoned enough).
- Page 5 Add the c eramic capacitors now. There are fourteen of them of the same value - 1 00nF (they are marked "104" on itself). Insert the I C sockets: 8 pin DIL (1x), 1 6 pin DIL ( 9x), 2 8 pin DIL (1x). Just be aware of the r ight direction of sockets - there is a notch on each socket that has to match with the marked notch on the PCB.
- Page 6 Bend the legs of the 7 805 regulator to make them right angled and solder the regulator. Move to soldering the s witch now. You can solder just one leg first, adjust it by reheating and do the rest then.
- Page 7 Do also the right angled b utton . Keep the same quality of position as with the switch. Add the rest of c apacitors . There is 4 7μF electrolytic one which is p olarized ! The l onger lead goes to the plus (+) hole on the PCB...
- Page 8 Let's solder the r esonator and the f use as well. These parts are not oriented.
- Page 10 Now you can add the p ower connector . Just push it down to the PCB and solder it straight. Insert the m ale headers now. Be sure to solder them straight and flat with the board. Again, you can solder just one leg, do the adjustment and solder the rest.
- Page 11 Turn the PCB around now. Insert the white L ED according to its o rientation - the l onger lead goes to the plus (+) hole . Solder it almost down to the PCB. Finally, move on to the funniest part - p otentiometers . There are (surprisingly!) SIXTY of them. Pots take a little care and patience to install correctly.
- Page 12 And now the last parts for soldering - M IDI connectors . You have to do a little adjustment before soldering. You should adjust the plastic corners (see the photo) of the connector by cutting. You can also cut the legs of pots. Then just be sure to solder them straight and flat with the PCB.
- Page 14 ASSEMBLY Before you begin to place the enclosure on, you might want to c lean 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.
- Page 15 At this point, don't forget to insert all I Cs in the sockets: A tmega (1x), C D4051BE (9x) and 6 N137 (1x). Watch out for the o rientation for particular IC. There is a little half circle notch or dot on one side of each IC that should match the notch drawn on the PCB.
- Page 16 ENCLOSURE (FLAT VERSION) First install the spacers into the corners. The longer ones goes to the bottom side. Put the top enclosure on and secure it with the four 6 mm mushroom head screws.
- Page 17 Turn the unit around and place the side enclosures on. Now you can also add the rubber standoffs.
- Page 18 Finally, place the bottom enclosure on and secure it with the five countersunk screws. Your 60 Knobs is completely done now, congratulations!
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Page 19: Troubleshooting
TROUBLESHOOTING Check the F .A.Q. on our website first. If you are still in trouble the best thing is to take a nap! Especially late at night! Then you can send the detailed description of the problem with enclosed high-resolution photos on ...