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Echo RP2040 Keyboard Module34C

phpbbireland·echo·Module34C/RP2024_Module34.kicad_pcb

Echo RP2040 Keyboard Module34C PCB layout, top view — open source RP2040/RP2350 board by phpbbireland
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About the Echo RP2040 Keyboard Module34C PCB

Echo RP2040 Keyboard Module34C is an open source RP2040/RP2350 PCB design by phpbbireland, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 34.5 × 45 mm, with 45 components from 24 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the XC6206PXXXMR-REGULATOR_LINEAR, PRTR5V0U2X, W25Q128JVS and 74LVC1T45W6-7. By type, the board carries 20 capacitors, 12 resistors, 5 ICs, 4 connectors, 1 crystal and 1 fuse.

It belongs with the keyboards designs in this gallery.

From the project

Echo Keyboards with QMK and VIA support

Models included are: + Alya: ayla80 (iso/ansi) + Cashel: cashel100 (ansi/iso) + Mioke: xpad (macro/num pad) + Echo: test code for RP2040 ayla80 (iso). + EN01560AKL (iso) + EN014 (iso) June 2025

The current STM32F411 keyboard code works for all versions, however, the RGB is not tested, to put it simply, I don't know how to implement the RGB code as including it resulted in compile errors, best use the RP2040 modulesfor now.

Echo RP2040 Keyboard Module34C, from the project README
From the project README

Main components on the Echo RP2040 Keyboard Module34C

XC6206PXXXMR-REGULATOR_LINEARPRTR5V0U2XW25Q128JVSRP204074LVC1T45W6-7

Echo RP2040 Keyboard Module34C bill of materials (BOM)

45 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XC6206PXXXMR-REGULATOR_LINEAR
XC6206PxxxMR-Regulator_Linear
U1
1
PRTR5V0U2X
U2
1
W25Q128JVS
U3
1
RP2040
U4
1
74LVC1T45W6-7
74LVC1T45
U5
1
12MHZ
12Mhz
Y1
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J1
2
Conn_01x02_Pin
J2, J4
1
CONN_02X17_ODD_EVEN
Conn_02x17_Odd_Even
J3
1
500MA
500mA
F1
1
CAPS
LED1
1
600R
FB1
1
CL05B104KB54PNC
100nF
C1
1
4.7UF
4.7uF
C2
1
10UF
10uF
C3
1
47UF
47uF
C4
11
100NF
100nF
C5, C6, C7, C8, C9, C10, C14, C15 +3
3
2U2
2u2
C11, C12, C13
2
15P
15p
C17, C18
1
200
R1
Show 4 more
QtyPartRefs
2
5.1K
5.1k
R2, R3
4
27
R4, R6, R10, R12
2
10K
10k
R5, R9
3
1K
R7, R8, R11

Echo RP2040 Keyboard Module34C design files

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

Echo RP2040 Keyboard Module34C: common questions

What microcontroller does the Echo RP2040 Keyboard Module34C use?

The Echo RP2040 Keyboard Module34C is built around the RP2040, from the RP2040/RP2350 family.

How big is the Echo RP2040 Keyboard Module34C PCB?

The Echo RP2040 Keyboard Module34C measures 34.5 × 45 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Echo RP2040 Keyboard Module34C?

45 components, from 24 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 Echo RP2040 Keyboard Module34C design files?

From the phpbbireland/echo 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 Echo RP2040 Keyboard Module34C design in my own project?

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

Can I test firmware for the Echo RP2040 Keyboard Module34C 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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