HardLabs

GuitarPico

profdc9·GuitarPico·GuitarPico/GuitarPico.kicad_pcb

GuitarPico PCB layout, top view — open source RP2040/RP2350 board by profdc9

About the GuitarPico PCB

GuitarPico is an open source RP2040/RP2350 PCB design by profdc9, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 127 components from 43 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the LM358, LM7805_TO220, TL431LP and 4051. By type, the board carries 60 resistors, 35 capacitors, 7 connectors, 6 ICs, 5 switches and 3 transistors.

It belongs with the audio designs in this gallery.

From the project

A guitar effects processor based on the Raspberry Pi Pico

This is a guitar effects processor based on the Raspberry Pi Pico. A video of some of the effects is at

https://www.youtube.com/watch?v=15d9mEu2koQ

1. Noise Gate 2. Delay 3. Room (set up specific echoes at particular delays) 4. Combine (mix together the signals from several effects) 5. 2nd order Bandpass filter 6. 2nd order Lowpass filter 7. 2nd order Highpass filter 8. 2nd order Allpass filter 9. Tremolo (amplitude modulated by a low frequency oscillator) 10. Vibrato (pitch modulated by a low frequency oscillator) 11. Wah (bandpass filter with center frequency controlled by an external…

GuitarPico, from the project README
From the project README

Main components on the GuitarPico

LM358PicoLM7805_TO220TL431LP4051

GuitarPico bill of materials (BOM)

127 components, 43 distinct parts.

QtyPartRefs
2
LM358
U1, U2
1
Pico
U3
1
LM7805_TO220
U4
1
TL431LP
U5
1
4051
U6
3
2N3904
Q1, Q2, Q3
1
INPUT
J1
3
INPUT
J2, J8, J9
1
OUTPUT
J3
1
OUTPUT
J4
1
Barrel_Jack_Switch
J5
2
POWER
JP1, JP2
2
10k
RV1, RV2
4
10k
RV3, RV4, RV5, RV6
5
SW_Push
SW1, SW2, SW3, SW4, SW5
1
SSD1306
Brd1
1
1N5819
D1
1
1N4148
D2
11
100 nF
C1, C6, C14, C18, C21, C24, C25, C26 +3
5
100 uF
C2, C19, C20, C34, C35
Show 23 more
QtyPartRefs
1
1000 pF
C3
8
10 uF
C4, C5, C7, C10, C11, C15, C16, C17
2
22 nF
C8, C12
1
2200 pF
C9
1
4700 pF
C13
2
10 nF
C22, C31
2
100 pF
C23, C30
2
220 uF
C32, C33
16
1k
R1, R8, R10, R12, R14, R15, R16, R17 +8
3
470R
R2, R49, R52
5
100R
R3, R22, R24, R56, R57
2
1M
R4, R21
1
220R
R5
2
220k
R6, R18
4
NC
R7, R19, R47, R48
1
4k7
R9
12
10k
R11, R23, R26, R36, R37, R38, R39, R40 +4
1
22k
R13
3
2k2
R25, R45, R50
5
2k
R28, R29, R31, R33, R35
1
390R
R54
1
150R
R55
3
10R
R58, R59, R60

GuitarPico design files

The KiCad project lives in the profdc9/GuitarPico repository on GitHub; these links point at the commit this page was built from.

GuitarPico: common questions

What microcontroller does the GuitarPico use?

The GuitarPico is built around the Pico, from the RP2040/RP2350 family.

How big is the GuitarPico PCB?

The GuitarPico measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the GuitarPico?

127 components, from 43 distinct parts. The full bill of materials is listed on this page.

Where can I download the GuitarPico design files?

From the profdc9/GuitarPico repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the GuitarPico design in my own project?

The repository has no license, so all rights stay with profdc9. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the GuitarPico without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

More boards in GuitarPico

Similar boards