Akashic Guitar effects circuit lookup
RELLEVELTHRESH

1590BBS · 3 knobs

Dead End FX

Zuul

Based on the Guyatone PS-027 Loop Gate

Category
Utility· Loop Buffer, Noise Gate
Controls
Rel · Level · Thresh
Price
$15.00in stock

From the vendor

Clone board of the Guyatone PS-027 Loop Gate. It's a effects loop pedal. It's a noise gate. It's an effects loop with a noise gate! A severely overlooked, but extremely handy tool that allows you to either use it alone as a simple noise gate, or insert noisy effects into the loop, and let the gate take care of keeping them quiet when you're not playing. Brilliant!

Please note that this project uses the Coda silent relay switching bypass. A preprogrammed PIC chip will be required. The preprogrammed PIC chip is available here; http://www.deadendfx.com/product/coda-bypass-pic

Schematic

The schematic is in the vendor's build document, page 6. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 87 rows

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ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.

RefValueNormalizedTypeNotes
Resistors 37
R1339ksch39k
R141msch1M
R151msch1M
R16470ksch470k
R171m5sch1.5M
R181msch1M
R1910ksch10k
R20150rsch150
R21100ksch100k
R264k7sch4.7k
R279k1sch9.1k
R284k7sch4.7k
R294k7sch4.7k
R30470rsch470
R312m2sch2.2M
R32270ksch270k
R3312ksch12k
R342msch2M
R3510ksch10k
R3610ksch10k
R14k7sch4.7k
R21ksch1k
R3470ksch470k
R41ksch1k
R51k5sch1.5k
R610ksch10k
R710ksch10k
R81ksch1k
R9470ksch470k
R1010ksch10k
R11100ksch100k
R12240ksch240k
R2210ksch10k
R23100ksch100k
R24100ksch100k
R25330rsch330
R3710ksch10k
Capacitors 22
C1222nsch22n
C1322nsch22n
C1422nsch22n
C151usch1u
C181usch1u
C19680psch680p
C204u7sch4.7u
C2110usch10u
C147nsch47n
C2100usch100u
C3100usch100u
C422nsch22n
C5100psch100p
C6100psch100p
C7100nsch100n
C81usch1u
C947nsch47n
C101usch1u
C1147psch47p
C1610nsch10n
C172u2sch2.2u
C2210usch10u
Diodes 14
D71n4148sch1N4148
D81n4148sch1N4148
D91n4148sch1N4148
D101n4148sch1N4148
D111n4148sch1N4148
D121n4148sch1N4148
D131n4148sch1N4148
D141n4148sch1N4148
D151n4148sch1N4148
D21n4001sch1N4001
D51N4148fixed1N4148
D61N4148fixed1N4148
D15v1ZENERocr5V1
D41N4148ocr1N4148
Transistors 5
Q12SC1815-BLocr2SC1815-BL
Q22SC1815-BLocr2SC1815-BL
Q32SK30A-Yocr2SK30A-Y
Q42SK30A-Yocr2SK30A-Y
Q52SK30A-Yocr2SK30A-Y
ICs 4
IC1pic12f675schPIC12F675
IC2tlp222aschTLP222A
IC44558ocr4558
IC3LM324fixedLM324
Potentiometers 3
RelA1MschA1MPotentiometer
LevelA100KschA100kPotentiometer
ThreshA1MschA1MPotentiometer
Trimmers 1
TRIM12m2sch2.2M
Switches 1
FSWSPSTocrSPST