Bastl Instruments Spa Manuale utente
lastupdate:6.5.2016
SPA(GRANDPAEXPANDER)v1.1AssemblyGuide
bastlinstruments.com
INTRODUCTION
This guide is for building Spa module from Bastl Instruments. 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 this tutorial first . We even included some of the best quality solder we have found to
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helpyousoldereverythingfasterandbetter.
The Spa module consists of two boards. All the parts comes in three bags separated for Top board,
BottomboardandAssemblyparts.SeeBillofMaterials(BOM)fordetailedlist.
1http://www.instructables.com/id/Howtosolder/
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Beforestartingthiskit,preparethefollowingtools:
● Solderingiron(1520W)
● Multimeter
● Flushcutters
● n2.hexscrewdriverorallenkey(enclosedwithkit)
● Phillipsscrewdriver(cross)
● WrenchNo.8
● Protectiveeyewear
We suggest that you work in a clean and a well lit and ventilated environment to avoid accidents or
losinganyofthesmallcomponents.
Alsobrieflygothroughthisguideandmakesurethatyouunderstandallthesteps.
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BOTTOMBOARD
Let’s start with the bottom board. Solder in the 10k resistor. Then snip the leads as close to the PCB as
you can (be sure to make this step on all remaining leads in the course of this guide). Then do the same
with the diode (1N4007). Be careful, diodes are polarized! Make sure that the marking ring on the
diodebodymatchesthemarkingonthecircuitboard.
Next place and solder the IC sockets (8 pin, 14 pin and 28 pin). Notice the notch on them. Make sure
thatitisinthesamedirectionastheprintingontheboard(thesocketsareallorientedthesameway).
Proceedtosolderingthenextcomponentsinthefollowingorder:
7805 voltage regulator (bend its legs as close to the body as possible, at a right angle to make
surethatitliesflatonthecircuitboard)
Six100nFceramiccapacitors(marked“104”)
One16MHzresonator(theorangecomponentwith3leads)
Two 10μF electrolytic capacitors (watch out, these ones are polarized! There is a plus (+)
signonthePCBthatshouldmatchthelongerleadofthecapacitor)
One protective fuse (marked “PTC” on board; be careful, they look quite similar to
capacitors).
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Turn around the PCB and insert
and solder the male
pinheaders (6 pin, 2x5 pin). Be
careful to solder the pinheaders
straight! You may first solder
one of the pin, then take the
board in your hand and reheat
that pin while pressing down on
the header to align it. Wait for it
to cool and solder the rest of the
pins.
Now you can insert three ICs into the sockets (MCP6002, MCP6004, Atmega). Watch out for
orientation! There is a notch on the ICs that should match with the notch on the sockets. Install also the
smallnutandscrewonthevoltageregulator.
TOPBOARD
Now populate the top board. Take your time and find the values of remaining resistors using a
multimeter (or you can check the color codes if you are seasoned enough). There are eight of them to
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solder(4x100R,2x1k,2x100k).
Prepare female pinheader with your flush cutters now. You
need a 10 pin one. You will always lose one pin when cutting
the female headers, so be sure to cut it always after the last
required pin check the picture to see where to cut to get 10
pin).
2https://learn.sparkfun.com/tutorials/howtouseamultimeter/measuringresistance
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Toensurethattheheadersareproperlyaligned,screwthehex
screwandthe11mmspacer(nutnut)onbottomboard.Place
thefemaleheadersonbottomboardwiththemalepins
inserted.Connecttheboardstogetherandmountthemwiththe
otherspacer(10mmone,screwnut).Nowyoucansolderthe
headersonbothboards.
Unscrew the spacer on top and disconnect the two boards. Next place the four potentiometers (B100k)
to their respected places on the top board. Push them well until they sit absolutely flat on the board.
Thenplacethemonojacksandtheswitchontheboard.Don’tsolderanythingyet.
Place the spacer back in the opening. Take the front panel, screw and mount it with the board. Check
that all the components came through. Secure the jacks to the panel with the washers and the nuts
(keepinmindnottotightenthejacknutstoomuchasyoumaydamagethepanel!).
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Push the switches to be sure that they come through the panel. Make sure that everything is properly
aligned.Nowyouarefinallyreadytosolderallthesecomponents.
Thencutonelegofthejackconnector.
Congratulations! You have made it through. Now just connect the bottom board, add the knobs, connect
SpawiththeGrandpa(seethemanual)andyouarereadytoenjoyyournewmodule!
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Before you connect anything, make sure that your system is disconnected from power. Also double
check the polarity of the ribbon cable, the red cable should match the 12V rail both on the module and
onthebusboard!
TROUBLESHOOTING
FirstcheckouttheDIYF.A.Q.
Ifyouarehavingsomemoretrouble,thebestthingistotakeanap!Especiallylateatnight!
If you are still in trouble you can send the detailed description of the problem with enclosed
highresolutionphotosondiy@bastlinstruments.com.
If you think that you are unable to make the module work on your own, consider our “Come to Daddy”
service.
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