LushOne Synth Manual

LushOne Synth
BuildInstructions

Gettingstarted
•TheLushOne isnotadifficultbuildbuttherearealot
ofpartsandtheyhavetogointherightplaces
–Notreallysuitableforcompletebeginners
–Ifyou’vebuiltafewthingsthatworkedthenshouldbeOK
–YoushouldbeabletosolderICswithoutdestroyingthem!
•Accuracyandneatnessismoreimportantthanspeed
–Getitworkingfirsttime
•TheseinstructionswillguideyoubutIassumeyouare
familiarwithbasictechniquesandequipment
–Theinstructionsshouldbesuitableforsomeonewithaskill
levelappropriatetotheproject
•Allcomponentsexceptbatteriesaremountedonthe
circuitboard–noslow,fiddlypointtopointwiring!

Buildorder
Buildinanyorderyoulike,butIsuggest:
•Patchsockets
•ICsandICsockets
•Resistors,capacitors
•Transistor,diodes,crystal
•LEDs
•Switchesandconnectors
•Batteryleads
•Variableresistors

Front
Thefollowingcomponentsaremountedfromthefront:
•Patchsockets
•LEDs
•Powerandpushswitches
•ICSPprogrammingheader
•Variableresistors

Back
Thefollowingcomponentsaremountedfromtheback:
•Everythingnotonthefront!
•(Exceptthebatteries)

Patchsockets
•14smallsilverpatchsocketsfit
fromfrontofboard
•Fitinthelarge,labelledcircles
–Notthefourmountingholesinthe
extremecorners
•Solderroundrimonback
•Suggestyoufitfirstsoyoucan
makethemsitnicelyflushwiththe
board

ICsandICsockets
•AllICsaremountedfromtheback
•ICsareprovidedunsocketed exceptfortheIC401
–Youcanaddsocketsifyoulike!
•Positionsandorientationsaremarkedonthesilk‐screen
–Pin1alsohasasquarepad
•Thevoltageregulatorhasthesamecaseasthetwotransistors–check
thelabels!
–Orientationisshownonsilk‐screen
Designation Type Comment
IC401 ATMEGA88 28Pin
U201 LM324orLM2902N 14 Pin
U202 LM13700 16Pin
U301 LM324orLM2902N 14 Pin
U401 SFH618
4Pin–Seecommentson
nextpage!
U402 78L05 3Pintransistor‐stylecase
U403 74HC00 14Pin

SFH618 Orientation
•MarkingsonU401/SFH618canbeveryhardtosee
•Usethisguidetohelpfindpin1
–Thereareseveraldifferentpackagesdependingonthesource
–Othermarkings(eganotchatthepin1end)mayalsobeused
Smalldentin
plasticindicates
pin1
Whiteish dotnext
totextindicates
pin1

Resistors
•Allresistorsaremountedfromtheback
•ResistorsareallmountedverticallyexceptR401
–Seephotosbelow
•Labelsarenotinasetpositionrelativetothesymbol–
lookfortheclosestlabel
–Alsosomeclarificationsonnextpage
•Theroundsilk‐screensymbolshownaboveshowsthe
resistorlocations(exceptR401)
–Notetheshortlineonthesilkscreenindicatingthedirectionofthesecondlead
R201 470k
R202 8.2k
R203 68k
R204 10k
R205 10k
R206 10k
R207 47k
R208 4.7k
R209 2.2k
R210 10M
R211 12k
R212 1k
R213 47k
R214 47k
R215 10k
R216 10k
R217 2.2k
R218 10k
R219 10k
R220 10k
R221 10k
R222 8.2k
R223 220R
R224 220R
R225 220R
R226 220R
R227 2.2k
R228 10k
R229 2.2k
R301 10k
R302 10k
R303 10k
R304 10k
R305 1k
R306 10k
R307 10k
R308 10k
R309 10k
R310 1k
R401 220R
R402 1k
R403 220R
R404 1k
R405 220R
R406 220R
R407 10k
R408 220R
R409 470R
R410 220R
R411 10k
Value Colours
220R Red,Red,Brown, Gold
470R Yellow,Purple,Brown,Gold
1k Brown,Black, Red,Gold
2.2k Red,Red,Red,Gold
4.7k Yellow,Purple,Red,Gold
8.2k Grey, Red,Red,Gold
10k Brown, Black,Orange,Gold
12k Brown,Red,Orange,Gold
47k Yellow,Purple,Orange,Gold
68k Blue,Grey,Orange, Gold
470k Yellow,Purple,Yellow,Gold
10M Brown,Black,Blue,Gold
Seecross‐referenceonlastslideforlistsortedbyvalue!

Trickydesignators
R204 R203 R211
R206
Themiddleoftheboardiscrowded.
Thisisaguidetosomeofthecomponentswherethelabelmightbeambiguous
R208
R205
D201
R217
R227
R222

Capacitors
C201 1u Ceramic
C202 820p Ceramic
C203 2n2 Ceramic
C204 680p Ceramic
C205 270p Ceramic
C206 1n Ceramic
C207 47u Electrolytic
C208 10u Electrolytic
C209 2n2 Ceramic
C210 2n2 Ceramic
C211 100n Ceramic
C212 100n Ceramic
C213 100n Ceramic
C214 100n Ceramic
C301 820p Ceramic
C302 2n2 Ceramic
C303 680p Ceramic
C304 270p Ceramic
C305 820p Ceramic
C306 2n2 Ceramic
C307 680p Ceramic
C308 270p Ceramic
C309 100n Ceramic
C310 100n Ceramic
C401 100n Ceramic
C402 100u Electrolytic
C403 100n Ceramic
C404 100n Ceramic
C405 10u Electrolytic
C406 22p Ceramic
C407 22p Ceramic
C408 100u Electrolytic
C409 100n Ceramic
•Allcapacitorsaremountedfromtheback
•Capacitorsaremarkedwithoneofthesymbolsshown
above
•Forelectrolyticcapacitorsthe“+”lead(longerlead)is
labelledandindicatedbythesquarepad.
•Somecapacitors(likeC303)maycomewitheitherwideor
narrowlegspacing.Connectasshownbelow.
Connectnarrowlegstothesepads
Connectwidelegstothesepads
Value Marking
22p 220or22or22p
270p 271
680p 681
820p 821
1n 102
2n2 222
100n 104
1u 105
Seecross‐referenceonlastslideforlistsortedbyvalue!

Transistors,diodes,crystal
•AllTransistorsanddiodesandthe
crystalaremountedfromtheback.
•CrystallocationismarkednearIC401
•Transistorsaremarkedshowingthe
packageorientation.Checkyouhave
thetwotransistorsandnotthe
voltageregulator!
•Diodesareallverticallymounted
andshownwiththesquaresymbol.
–Thediode’sstripeshouldbetowards
theprintedsquare/squarepad
–Alldiodesaremountedvertically
(liketheresistors)
–Smalllinecomingoutofsquareon
silkscreenshowsdirectionofthe
lead.
“youexpectadiodetohaveitsarrow
pointingtowardthepaintedband
(sometimescalledthecathodebythe
snobbish)”
BobPease
D201 1N4148
D202 1N4148
D203 1N4148
D204 1N4148
D205 1N4148
D206 1N4148
D207 1N4148
D420 1N4148
Q201 2N3906
Q202 2N3906
X401 16MHz Note
arrangementof
thesediodesin
thefilter!

LEDs
•AllLEDsaremountedfromthefront
•Short‐leadgoestowardsthesquarepad
•DependingonyourcasedesignyoumightwanttolifttheLEDsupabovethe
board

Switches
•Allswitchesaremountedfromthe
front
•Fourtall“tactile”buttonsmounton
thefourpointsundertheLEDs
–Theseonlyfitproperlyinone
orientation.Ifyouarehavingtrouble
fittingtryturning90°
•Slidingpowerswitchfitsontheleft
oftheboard

Connectors
•TheDINconnectorandthe3.5mmjacksocketare
mountedfromtheback
•DINconnectormountseasilyonthe“P405”label
•3.5mmjacksocketisasurface‐mountpart!
–Don’tpanic!It’shugeandeasytohandle
–Fitson“P206”pads
–Putsolderblobononepad
–Meltsolderandpushsocketintoplaceusinglocating
holesasaguide
•Makesuretheinputisfacingtheedgeoftheboard
–Checksocketissittingnicely
–Solderuptheotherpads
•The6pin“ISCP”(sorryaboutthetypo– shouldbe
ICSP)headerismountedfromthefront
–Solderinwhereindicated
–Ifyoudon’tplantochangethefirmwareyoucanomitthis
part
Surfacemount
padsforjack
socket
Jacksocket
tackedinplace
withonepad

Batteryleads
•TheLushOne runsfromtwo9V
“PP3”batteries
•Batteryconnectorsaremountedas
showninthephotos
•Leadsterminateintheboxlabelled
“Vin”nexttothepowerswitch
•Connectorsare(seephoto):
–“9V”–1
st connector–red
–“0V”–1
st connector–black
–“0V”–2
nd connector–red
–“‐9V”–2
nd connector–black
•Rememberforasplit‐railpower
supplythegroundisnegativeof
onebatteryandthepositiveofthe
other!

Variableresistors
•Fivevariableresistorsare
mountedwhereshownonfront
ofboard
•Youmayneedtobendthepins
slightlytomakethemsit
properly
RV201 10k
RV202 10k
RV203 10k
RV204 10k
RV401 10k
RV402 10k

PatchLeads
•Youmayhavepre‐builtpatchleadsorpartsto
makepatchleads.
•Ifyouhaveyourpatchleadsasseparateparts:
–Cutthepatchwireintothreeequallengths
–Stripashortamountofinsulationfromeachendofthe
wirelengths
–Connecta2mmstackingpatchconnectortoeachendas
showninthisvideo:
http://youtu.be/WA6blg6HNP0

Checkingtime
•Congratulations– buildingshouldnowbe
complete!
–Takeabreak
–InsertIC401inthesocketifyouhaven’tdoneso
already
•Timetocheck:
–Nopartsleft‐over
–Allparts(particularlyICs)intherightway
–Nobadsolderjointsorunsolderedjoints
–Batteryconnectorsoncorrectly(veryimportant!)
–Nosolderbridgesorotherproblems
•Goodluck
•SeethetrainingforhowtousetheLushOne

Firmware
•Themicrocontrollerinthekitcomeswith
firmwarepre‐loaded
•IfyouhaveanAVRserialprogrammeryoucan
updatethefirmwareusingtheICSPheader
(onsomeoldboardslabelled“ISCP”–blush)
•Thisconnectordoesnotforcecorrect
orientation.
•Pin1islabelled
•Checkanddoublecheckorientationbeforeconnecting
theprogrammer!