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RUNOFFGROOVE UBE SCREAMER

3

PARTS LIST

This parts list is also available in a spreadsheet format which can be imported directly into Mouser for 
easy parts ordering. Mouser doesn’t carry all the parts—notably potentiometers—so the second tab lists 
all the non-Mouser parts as well as sources for each.

View parts list spreadsheet

 

→ 

PART VALUE

TYPE 

NOTES

R1

470k

Metal film resistor, 1/4W

R2

470k

Metal film resistor, 1/4W

R3

100k

Metal film resistor, 1/4W

R4

100k

Metal film resistor, 1/4W

R5

10k

Metal film resistor, 1/4W

R6

1M

Metal film resistor, 1/4W

R7

100k

Metal film resistor, 1/4W

R8

10k

Metal film resistor, 1/4W

R9

100k

Metal film resistor, 1/4W

R10

100k

Metal film resistor, 1/4W

R11

330k

Metal film resistor, 1/4W

R12

680k

Metal film resistor, 1/4W

R13

150k

Metal film resistor, 1/4W

R14

220k

Metal film resistor, 1/4W

R15

330R

Metal film resistor, 1/4W

Power supply filter resistor.

RPD

2M2

Metal film resistor, 1/4W

Input pulldown resistor. Can be as low as 1M.

LEDR

4k7

Metal film resistor, 1/4W

LED current-limiting resistor. Adjust value to change LED brightness.

C1

10n

Film capacitor, 7.2 x 2.5mm

C2

2n2

Film capacitor, 7.2 x 2.5mm

C3

470n

Film capacitor, 7.2 x 3mm

C4

OMIT

MLCC capacitor, NP0/C0G

Optional. Use 100pF if you experience feedback at high gain settings.

C5

100n

Film capacitor, 7.2 x 2.5mm

C6

1n5

Film capacitor, 7.2 x 2.5mm

C7

150pF

MLCC capacitor, NP0/C0G

C8

100n

Film capacitor, 7.2 x 2.5mm

C9

100n

Film capacitor, 7.2 x 2.5mm

C10

100n

Film capacitor, 7.2 x 2.5mm

C11

220uF

Electrolytic capacitor, 6.3mm

Power supply filter capacitor.

C12

100n

MLCC capacitor, X7R

Power supply filter capacitor.

C13

100n

MLCC capacitor, X7R

Power supply filter capacitor.

D1

1N5817

Schottky diode, DO-41

D2

1N914

Fast-switching diode, DO-35

Summary of Contents for UBE SCREAMER

Page 1: ...MMARY DOCUMENT VERSION Runoffgroove UBE Screamer An original design from Runoffgroove with the goal of reproducing the sound of the Tube Screamer with CMOS gain stages CMOS overdrive 1 0 0 2022 04 08 BUILD DIFFICULTY Easy Actual size is 2 3 x 1 86 main board and 1 78 x 0 87 bypass board ...

Page 2: ... Aion FX implementation of the UBE adds two modifications a clipping diode switch and a second switch to change out the global feedback resistor The original Runoffgroove article recommends selecting this resistor for based on whether you ll be using single coil pickups or humbuckers so we took the step of putting it on a switch so the pedal can be used in any scenario without heating up the solde...

Page 3: ...tal film resistor 1 4W R14 220k Metal film resistor 1 4W R15 330R Metal film resistor 1 4W Power supply filter resistor RPD 2M2 Metal film resistor 1 4W Input pulldown resistor Can be as low as 1M LEDR 4k7 Metal film resistor 1 4W LED current limiting resistor Adjust value to change LED brightness C1 10n Film capacitor 7 2 x 2 5mm C2 2n2 Film capacitor 7 2 x 2 5mm C3 470n Film capacitor 7 2 x 3mm ...

Page 4: ...B 16mm right angle PCB mount pot VOL 100kA 16mm right angle PCB mount pot CLIP SPDT Toggle switch SPDT on on Can also use a center off switch to add diode lift mode untested FREQ SPDT cntr off Toggle switch SPDT on off on LED 5mm LED 5mm red diffused IN 1 4 stereo 1 4 phone jack closed frame Switchcraft 112BX or equivalent OUT 1 4 mono 1 4 phone jack closed frame Switchcraft 111X or equivalent DC ...

Page 5: ...0k 470n 1M 100n 100k 1n5 10k GND 500kB 100k 150pF 100n 100k 100n 330k 680k 150k 220k 100n GND VA GND 100n GND VA 100pF RPD D1 C11 IN OUT C13 DRIVE 1 2 3 VOLUME 1 2 3 IC1D 10 9 IC1E 12 11 IC1C 6 7 IC1F 15 14 IC1B 4 5 IC1A 2 3 IC1P VDD VSS 8 1 R15 C1 R1 R2 C2 R3 R4 R5 C3 R6 C5 R7 C6 R8 TONE 1 2 3 R9 C7 C8 R10 C9 R11 R12 R13 R14 C10 D2 D3 D4 D7 D5 D6 FREQ 2 3 1 CLIP 2 3 1 C12 C4 GND ...

Page 6: ...rame jacks like the Switchcraft 111X If you d rather use open frame jacks please refer to the Open Frame Jack Drill Template for the top side LED hole drill size assumes the use of a 5mm LED bezel available from several parts suppliers Adjust size accordingly if using something different such as a 3mm bezel a plastic bezel or just a plain LED x 0 65 y 1 71 x 0 65 y 1 71 ø9 32 ø9 32 x 0 85 y 0 66 ø...

Page 7: ...RUNOFFGROOVE UBE SCREAMER 7 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B ...

Page 8: ...RUNOFFGROOVE UBE SCREAMER 8 WIRING DIAGRAM 125B IN V GND N C N C OUT PCB IN GND V V JACK GND JACK OUT IN GND GND PCB OUT ...

Page 9: ... FX projects These projects are for personal use only and may not be used for commercial endeavors without approval from Runoffgroove Here are the terms of use from their site runoffgroove com projects are provided free of charge to builders for personal non commercial use We do offer licensing for builders who wish to sell pedals based on in whole or in part our projects As part of the licensing ...

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