HardLabs

Camberwell Parrot

AudioMorphology·ParrotRev2·hardware_design/pcb/pcb.kicad_pcb

Camberwell Parrot PCB layout, top view — open source RP2040/RP2350 board by AudioMorphology

About the Camberwell Parrot PCB

Camberwell Parrot is an open source RP2040/RP2350 PCB design by AudioMorphology, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 117.2 × 110 mm, with 96 components from 36 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the PCM1808, TL072CD, GY_PCM5102A, APS6404L and L7805. By type, the board carries 39 resistors, 17 capacitors, 15 connectors, 9 ICs, 5 switches and 4 transistors.

It belongs with the audio designs in this gallery.

From the project

Parrot is a 12hp Eurorack digital delay powered by a Raspberry Pi Pico microcontroller.

Parrot is a 12hp Eurorack digital delay powered by a Raspberry Pi Pico microcontroller.

The objective is to provide a CD-Quality audio delay / reverb effect, with a reasonably low BOM count

It utilises an 8Mb x 8-Bit (64mBit) PSRAM Memory chip (the AP6404L), and the whole of this is treated as a 2Mb x 32-Bit audio buffer. This means that we can wrap the read and write pointers with a simple logical &.

Main components on the Camberwell Parrot

PicoPCM1808TL072CDGY_PCM5102AAPS6404LL7805MC14532B

Camberwell Parrot bill of materials (BOM)

96 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Pico
U1
1
PCM1808
U2
2
TL072CD
U3, U4
1
GY_PCM5102A
U5
1
APS6404L
U6
1
L7805
U7
2
MC14532B
U8, U9
1
DMG2305UX
Q1
2
MMBT3904
Q2, Q3
1
MMBT3906
Q4
1
Eurorack Power
J1
6
Thonkiconn
J2, J3, J4, J5, J6, J7
4
CONN_01X10_PIN
Conn_01x10_Pin
J9, J12, J14, J16
4
CONN_01X10_SOCKET
Conn_01x10_Socket
J10, J11, J13, J15
1
PTV112-4420A-A503
RV1
3
B100K
RV2, RV3, RV4
2
SW_ROTARY_1X8
SW_Rotary_1x8
SW1, SW5
2
SW_SPST
SW2, SW4
1
RotaryEncoder_Switch
SW3
2
1N5819
D1, D2
Show 16 more
QtyPartRefs
1
LED
D7
2
47U
47u
C1, C2
6
100N
100n
C3, C5, C14, C15, C16, C17
1
300N
300n
C4
2
220P
220p
C6, C7
4
10U
10u
C8, C9, C10, C11
2
18P
18p
C12, C13
1
330
R1
2
22K
22k
R2, R3
2
3.3K
3.3k
R4, R5
6
5.6K
5.6k
R6, R7, R8, R9, R10, R11
4
39K
39k
R12, R13, R14, R15
4
1k
R16, R17, R39, R40
2
10K
10k
R18, R41
2
100K
100k
R19, R42
16
4K7
4k7
R23, R24, R25, R26, R27, R28, R29, R30 +8

Camberwell Parrot design files

The KiCad project lives in the AudioMorphology/ParrotRev2 repository on GitHub; these links point at the commit this page was built from.

Camberwell Parrot: common questions

What microcontroller does the Camberwell Parrot use?

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

How big is the Camberwell Parrot PCB?

The Camberwell Parrot measures 117.2 × 110 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Camberwell Parrot?

96 components, from 36 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Camberwell Parrot design files?

From the AudioMorphology/ParrotRev2 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Camberwell Parrot design in my own project?

Yes, under the terms of its GPL-3.0 license, which AudioMorphology chose for the repository.

Can I test firmware for the Camberwell Parrot 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.

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