HardLabs

Q9-Chimera

xommmmmmmm·QueueNineChimera·Q9-Chimera/Q9-Chimera-PCB/Q9-Chimera.kicad_pcb

Q9-Chimera PCB layout, top view — open source RP2040/RP2350 board by xommmmmmmm

About the Q9-Chimera PCB

Q9-Chimera is an open source RP2040/RP2350 PCB design by xommmmmmmm, published on GitHub. It is a 2-layer board measuring 309.6 × 76.2 mm, with 198 components from 25 distinct parts.

Its main chip is the C2040, from the RP2040/RP2350 family. Other key parts include the C2897477, C2836319 and C97521. By type, the board carries 63 diodes, 16 capacitors, 11 switches, 7 resistors, 4 ICs and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

A drop-in, multi-layout (ortho/row/alpha stagger) PCB with numpad for Keychron Q9

Q9 Chimera & Limousine are RP2040-based, drop-in, multi-layout replacement PCBs for Keychron Q9. Chimera supports ortholinear layout with central or right-hand numpad, and traditional row-stagger with right hand numpad. Limousine supports row and alpha stagger, with support for 2.25u/2.75u "Alice" bars and right-hand numpad.

Both versions support up to two independent EC11 rotary encoders in the separated key positions, and a plethora of bottom-row options.

Q9-Chimera, from the project README
From the project README

Main components on the Q9-Chimera

C2897477C2836319C2040C97521

Q9-Chimera bill of materials (BOM)

198 components, 25 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C2897477
XC6206PxxxMR
U1
1
C2836319
SRV05-4
U2
1
C2040
RP2040
U3
1
C97521
W25Q128JVS
U4
1
C403945
Crystal_GND24
Y1
1
C160393
Conn_01x07
J1
2
C318884
SW_Push
BOOT1, RST1
5
C5156480
MX_SW_HS
MX1, MX2, MX3, MX16, MX32
79
C5156480
MX_SW_HS
MX4, MX5, MX6, MX7, MX8, MX9, MX10, MX11 +71
2
C5156480
MX_SW_HS
MX53, MX60
2
C5156480
MX_SW_HS
MX69, MX90
2
C5156480
MX_SW_HS
MX79, MX80
2
MX_SW_HS
MX91, MX92
1
MX_SW_HS
MX95
7
MX_stab_2u
S1, S2, S3, S4, S7, S8, S9
3
MX_stab_3u
S5, S6, S10
1
MX_stab_7810u
S13
63
C81598
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +55
5
C52923
1u
C1, C2, C3, C6, C11
8
C1525
100n
C4, C7, C8, C9, C13, C14, C15, C16
Show 5 more
QtyPartRefs
1
C19702
10u
C5
2
C1555
22p
C10, C12
3
C25905
5.1k
R3, R4, R5
2
C11702
1k
R6, R9
2
C25100
27
R7, R8

Q9-Chimera design files

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

Q9-Chimera: common questions

What microcontroller does the Q9-Chimera use?

The Q9-Chimera is built around the C2040, from the RP2040/RP2350 family.

How big is the Q9-Chimera PCB?

The Q9-Chimera measures 309.6 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Q9-Chimera?

198 components, from 25 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 Q9-Chimera design files?

From the xommmmmmmm/QueueNineChimera 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 Q9-Chimera design in my own project?

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

Can I test firmware for the Q9-Chimera 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.

Similar boards