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Convertible keyboard

TechnikWeber·convertible-keyboard-pcb

Convertible keyboard PCB layout, top view — open source RP2040/RP2350 board by TechnikWeber

About the Convertible keyboard PCB

Convertible keyboard is an open source RP2040/RP2350 PCB design by TechnikWeber, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 431.2 × 126.4 mm, with 482 components from 37 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q16JVSSIQ, AP2112K-3.3TRG1 and USBLC6-2SC6. By type, the board carries 124 resistors, 111 diodes, 110 switches, 107 LEDs, 18 capacitors and 4 ICs.

It belongs with the keyboards designs in this gallery.

From the project

Convertible keyboard PCB: full-size ISO-DE & ANSI with a snap-off numpad that turns it into a TKL (RP2040, USB-C, KiCad). Cheap, clean, modern core to build on — looking for a case designer.

One keyboard PCB, two sizes. A full-size ISO-DE / ANSI board whose numpad snaps off along a breakaway line. What remains is a complete tenkeyless (TKL) keyboard — same PCB, same controller, same firmware.

This is not meant to be yet another one-off DIY keyboard. The goal is a standardised core design that others can build on: cheap and simple to make, but clean and modern — current KiCad, QMK, USB-C and parts that can actually be bought. A case, lighting or layout variants build on this core instead of bending it into something else.

Convertible keyboard, from the project README
From the project README

Main components on the Convertible keyboard

RP2040W25Q16JVSSIQAP2112K-3.3TRG1USBLC6-2SC6

Convertible keyboard bill of materials (BOM)

482 components, 37 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
Raspberry Pi
U1
1
W25Q16JVSSIQ
W25Q16JVSS
Winbond Elec
U2
1
AP2112K-3.3TRG1
AP2112K-3.3
Diodes Incorporated
U3
1
USBLC6-2SC6
STMicroelectronics
U4
1
AO3400A
Alpha & Omega
Q1
2
2N7002
CJ(Changjiang Elec)
Q2, Q3
1
X322512MSB4SI
12MHz
YXC
Y1
1
TYPE-C-31-M-12
USB_C
Korean Hroparts Elec
J1
1
Pico-EZmate 78171-0004
J2
1
SM04B-SRSS-TB(LF)(SN)
JST-SH SM04B-SRSS-TB
JST
J3
1
SMD1206P050TF/15
500mA
PTTC(Polytronics Tech)
F1
88
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +80
2
SW_Push
SW30, SW104
2
SW_Push
SW38, SW106
2
SW_Push
SW57, SW92
1
SW_Push
SW58
1
SW_Push
SW71
8
SW_Push
SW75, SW93, SW94, SW95, SW97, SW98, SW99, SW100
1
SW_Push
SW87
1
SW_Push
SW96
Show 17 more
QtyPartRefs
2
SW_Push
SW107, SW108
2
TL3342F260QG
SW_Push
E-Switch
SW201, SW202
107
XL-3216UWC-FB
XINGLIGHT
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +99
108
1N4148W
D
CJ(Changjiang Elec)
D1, D2, D3, D4, D5, D6, D7, D8 +100
3
KT-0805W
0805
Hubei KENTO Elec
D122, D126, D128
1
0603B472K500NT
4n7
FH(Guangdong Fenghua)
C201
2
CL21A106KAYNNNE
10u
SAMSUNG
C202, C203
2
CL10C150JB8NNNC
15p
SAMSUNG
C204, C205
11
CC0603KRX7R9BB104
100n
YAGEO
C206, C210, C211, C212, C213, C214, C215, C216 +3
2
CL10A105KB8NNNC
1u
SAMSUNG
C218, C219
112
0603WAF1001T5E
1k
UNIROYAL ELEC
R1, R2, R3, R4, R5, R6, R7, R8 +104
3
0603WAF1000T5E
100
UNIROYAL ELEC
R121, R123, R125
3
0603WAF1003T5E
100k
UNIROYAL ELEC
R122, R124, R126
2
0603WAF5101T5E
5k1
UNIROYAL ELEC
R201, R202
1
0603WAF1004T5E
1M
UNIROYAL ELEC
R203
2
0603WAF270JT5E
27
UNIROYAL ELEC
R204, R205
1
0603WAF1002T5E
10k
UNIROYAL ELEC
R208

Convertible keyboard design files

The KiCad project lives in the TechnikWeber/convertible-keyboard-pcb repository on GitHub; these links point at the commit this page was built from.

Convertible keyboard: common questions

What microcontroller does the Convertible keyboard use?

The Convertible keyboard is built around the RP2040, from the RP2040/RP2350 family.

How big is the Convertible keyboard PCB?

The Convertible keyboard measures 431.2 × 126.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Convertible keyboard?

482 components, from 37 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 Convertible keyboard design files?

From the TechnikWeber/convertible-keyboard-pcb 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 Convertible keyboard design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Convertible keyboard 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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