2 layers192.7 × 104.5 mm
Delay
MatthewATaylor/Modular-Synth-Hardware
KiCad schematics and PCB layouts for my modular synth
186 parts11MIT
2 layers188.2 × 55.5 mm
Effects Pedals
GoTouchGra55/PedalboardCustom guitar effects pedal board based on classic circuits
- Size
- 188.2 × 55.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 122
- Nets
- 97
- Pads
- 302
- Tracks, vias
- 429, 9
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Apr 2026
- Updated
- 15 May 2026
Overview
Effects Pedals is an open-source printed circuit board by GoTouchGra55, from the GoTouchGra55/Pedalboard repository on GitHub, published under the MIT licence. It is a 2-layer board of 188.2 × 55.5 mm with 122 parts on 97 nets, routed with 429 tracks and 9 vias.
It is built around the PT2399, NE5532 and TL072. Its parts include 40 resistors, 32 capacitors, 9 connectors, 8 diodes and 7 ICs. It belongs with the audio and music boards of this library.
Main components
3
PT2399
DIP-16Processor DIP-16 Audio Interface ICs ROHSPTCAudio Interface ICs
NE5532
SOP-8-22V~22V 0℃~+70℃ 100dB 10nA 14mA 2 40V/us 42mA 4mV 800nA 8nV/√Hz@30Hz Built-in compensation SOP-8 Operational Amplifier ROHSSungineOperational AmplifierTL072
SOP-8-18V~18V 0℃~+70℃ 1.4mA 1.5nA 10V/us 10mV 2 2.5nA 3MHz 85dB SOP-8 Operational Amplifier ROHSGcoreOperational Amplifier
README
README.mdMulti-Effects Pedal Board
A custom multi-effects guitar pedal board combining several audio effects into one compact unit. Designed primarily as a learning project to explore analog audio circuits, signal processing, and embedded control systems (obv).
Also I needed effects pedals and those things are absurdly expensive ;')
Features
- Distortion & Overdrive – From mild warmth to heavy saturation
- Chorus – Thickens and widens the sound
- Tremolo – Rhythmic volume modulation
- Delay – Adds echo and spatial depth
Signal Chain
Input -> Overdrive/Distortion -> Chorus -> Tremolo -> Delay -> Output
Note: Signal order can be adjusted depending on design preferences.
Power Requirements
- Input Voltage: 9V DC (center-negative)
- Power Supply: Regulated recommended
- Includes onboard regulation and decoupling for noise reduction
Hardware Overview
- Individual circuits for each effect
- Decoupling capacitors for stable operation
I/O
- Input Jack: 1/4" mono
- Output Jack: 1/4" mono
- DC Jack: 9V input
3D View
Routing
BOM
| Component | Purpose | Qty | Total Cost (USD) | Distributor |
|---|---|---|---|---|
| Stomp Switch | Toggle each effect | 1 | 25.53 | Daraz Nepal |
| 50k Potentiometer | Used in circuit | 1 | 7.38 | Daraz Nepal |
| 20k Potentiometer | Used in circuit | 1 | 5.08 | Daraz Nepal |
| 2k Potentiometer | Used in circuit | 1 | 5.22 | Daraz Nepal |
| 10k Potentiometer | Used in circuit | 1 | 0.63 | Daraz Nepal |
| 100k Potentiometer | Used in circuit | 1 | 1.24 | Daraz Nepal |
| 500k Potentiometer | Used in circuit | 1 | 5.08 | Daraz Nepal |
| B100k Potentiometer | Used in circuit | 1 | 0.50 | Daraz Nepal |
| B500K Potentiometer | Used in circuit | 1 | 0.50 | Daraz Nepal |
| PCB | Houses all components | 1 | 8.20 | JLCPCB |
| DC Barrel Jack | Power input connector | 1 | 0.44 | Daraz Nepal |
| 1uF Capacitor | Charge storage/filtering | 1 | 0.88 | Daraz Nepal |
| 220nF Capacitor | Charge storage/filtering | 1 | 0.88 | Daraz Nepal |
| 100nF Capacitor | Charge storage/filtering | 1 | 1.82 | Daraz Nepal |
| Ceramic Capacitors Kit | Misc capacitor assortment | 1 | 7.91 | Daraz Nepal |
| Capacitor Kit | General purpose capacitors | 1 | 2.97 | Daraz Nepal |
| 2.2M Resistor | Current limiting | 1 | 0.66 | Daraz Nepal |
| Resistor Kit | General purpose resistors | 1 | 3.92 | Daraz Nepal |
| LDR | Tremolo light-dependent resistance | 1 | 2.27 | Daraz Nepal |
| LED | Status indication | 1 | 0.87 | Daraz Nepal |
| Voltage Regulator (7805) | Voltage regulation | 1 | 1.31 | Daraz Nepal |
| PT2399 IC | Delay/chorus processing IC | 1 | 2.36 | Daraz Nepal |
| LM555 Timer | PWM generation for tremolo | 1 | 2.00 | Daraz Nepal |
| NE5532 Op Amp | Chorus effect op amp | 1 | 1.78 | Daraz Nepal |
| TL072 | Gain/effects op amp | 1 | 1.69 | Daraz Nepal |
| Diode | One-way current flow | 1 | 0.40 | Daraz Nepal |
| Schottky Diode | Fast low-drop diode | 1 | 0.93 | Daraz Nepal |
| 1N4148 Diode | Signal diode | 1 | 0.27 | Daraz Nepal |
| 2N3904 Transistor | Signal filtering/amplification | 1 | 0.63 | Daraz Nepal |
| Guitar Jack Socket | Guitar/amp I/O connection | 2 | 2.07 | Daraz Nepal |
Estimated Total Cost
~$94.54 USD
Note: Prices may vary depending on shipping, stock availability, and quantity ordered.
Suppliers
- Daraz Nepal
- JLCPCB
Notes
- Passive component kits (capacitors/resistors) include multiple values and quantities.
- Potentiometer values may vary depending on the final pedal circuit tuning.
- PCB pricing is estimated from JLCPCB prototype manufacturing quotes.
Parts
122| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R21, R23, R24, R25, R26, R27, R28, R29, R37, R38 |
| 9 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C13, C19, C20, C21, C22, C27, C28, C34, C36 |
| 6 | 47uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C3, PC10, PC11, PC29, PC35, PC38 |
| 5 | 0.1uF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C2, C4, C5, C6, C7 |
| 5 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6, R8, R12, R15, R16 |
| 5 | 10uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | PC8, PC9, PC30, PC31, PC32 |
| 5 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D3, D4, D5, D7 |
| 4 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R9, R11, R14 |
| 4 | 1M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10, R13, R18, R20 |
| 4 | IN | Connector_PinHeader_1.00mm:PinHeader_1x02_P1.00mm_Vertical | J2, J3, J7, J9 |
| 4 | OUT | Connector_PinHeader_1.00mm:PinHeader_1x02_P1.00mm_Vertical | J1, J4, J8, J10 |
| 3 | 10nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C25, C26, C33 |
| 2 | 100K | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | Gain1, Volume1 |
| 2 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R22, R39 |
| 2 | 100uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | PC3, PC37 |
| 2 | 10K | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | RV2, Tone1 |
| 2 | 1N5817 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D6, D8 |
| 2 | 220k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R34, R36 |
| 2 | 22nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C1, C16 |
| 2 | 47uF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C17, C18 |
| 2 | 50K | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | Depth1, Rate1 |
| 2 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U3, U7 |
| 2 | PT2399 | Package_DIP:DIP-16_W7.62mm | U4, U5 |
| 1 | 0.47uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | PC2 |
| 1 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R32 |
| 1 | 100pF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C14 |
| 1 | 1nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C24 |
| 1 | 1uF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C15 |
| 1 | 2.2k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R33 |
| 1 | 20K | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | RV1 |
| 1 | 220nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C12 |
| 1 | 27K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7 |
| 1 | 2K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 2N3904 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | 3.3nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C23 |
| 1 | 330k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R19 |
| 1 | 33k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R31 |
| 1 | 4.7K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5 |
| 1 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R35 |
| 1 | 470R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | 470k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R17 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R40 |
| 1 | 68k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R30 |
| 1 | B100k | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | RV4 |
| 1 | B500k | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | RV3 |
| 1 | Barrel_Jack_MountingPin | Connector_BarrelJack:BarrelJack_Horizontal | J11 |
| 1 | Chorus/Vibe | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | SW1 |
| 1 | LED | LED_THT:LED_D5.0mm | D2 |
| 1 | LM555xN | Package_DIP:DIP-8_W7.62mm | U2 |
| 1 | NE5532 | Package_DIP:DIP-8_W7.62mm | U6 |
| 1 | SW_Nidec_CAS-120A1 | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | SW2 |
| 1 | SW_Slide_DPDT | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | Toggle1 |
| 1 | Space/Warble | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | SW3 |
| 1 | TL072 | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | VT93xx | OptoDevice:R_LDR_4.9x4.2mm_P2.54mm_Vertical | R2 |
The 118 most common of 122 parts.
Questions
How big is the Effects Pedals PCB?
It measures 188.2 × 55.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Effects Pedals use?
122 parts, built around the PT2399, NE5532 and TL072. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Effects Pedals KiCad files?
From the GoTouchGra55/Pedalboard repository on GitHub, at the commit this page was made from: the board is KiCAD files/Effects_Pedals.kicad_pcb and its schematic KiCAD files/Chorus.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Effects Pedals design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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