Bastl Instruments DUDE v1.2 Assembly Manual

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 1 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 2 3 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/ 1

DUDE​ ​v1.2​ ​BOM SOLDERING qty value part 2 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 5 plastic​ ​enclosure 2

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. 3

220k (1x). Before you will start soldering, check the values by ​using a multimeter (or you can check 4 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 4

the​ ​diode​ ​matches​ ​the​ ​stripe​ ​on​ ​the​ ​PCB. 5

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. 6

Then​ ​do​ ​the​ ​470nF​ ​ones​ ​(they​ ​are​ ​marked​ ​"474"​ ​on​ ​itself​ ​and​ ​there​ ​are​ ​eight​ ​of​ ​them). 7

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. 8

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). 9

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. 10

line on the one side of button which has to be oriented upwards. Remember to solder these switches straight.​ ​See​ ​the​ ​pictures​ ​before​ ​soldering. 11

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. 12

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 13

signed​ ​legs. 14

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! 15

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. 16

Finish​ ​the​ ​enclosure​ ​with​ ​the​ ​top​ ​cover​ ​and​ ​mounting​ ​the​ ​screws​. Here​ ​it​ ​is,​ ​your​ ​Dude​ ​is​ ​finally​ ​completely​ ​alive!​ ​Congratulations! 17

on our website first. If you are still in trouble the best thing is to take a nap! 5 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/ 18