HardLabs

KP08Hub

siderakb·keypad·KP08Hub_keypad/KP08Hub_keypad.kicad_pcb

KP08Hub PCB layout, top view — open source RP2040/RP2350 board by siderakb

About the KP08Hub PCB

KP08Hub is an open source RP2040/RP2350 PCB design by siderakb, published on GitHub under the MIT license. It is a 2-layer board measuring 82.6 × 66 mm, with 87 components from 26 distinct parts.

Its main chip is the C2040, from the RP2040/RP2350 family. Other key parts include the C2827654, C47773, C2759934, C97521 and C85364. By type, the board carries 30 capacitors, 25 resistors, 6 ICs, 5 connectors, 5 inductors and 4 fuses.

It belongs with the keyboards designs in this gallery.

From the project

Some keypads/macropads

KP08Hub, from the project README
From the project README

Main components on the KP08Hub

C2827654C47773C2759934C2040C97521C85364

KP08Hub bill of materials (BOM)

87 components, 26 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C2827654
USBLC6-2SC6
U1
1
C47773
RT9013-33GB
U2
1
C2759934
CY7C65642-28LTXC
U3
1
C2040
RP2040
U4
1
C97521
W25Q128JVS
U5
1
C85364
SRV05-4
U6
2
C9002
12MHz
Y1, Y2
3
C165948
USB_C_Receptacle_USB2.0
J1, J2, J3
1
C2345
USB_A
J4
1
CONN_01X03
Conn_01x03
J5
1
C70061
1A 6V
F1
3
C269104
500mA 6V
F2, F3, F4
8
SW_Push
KEY1, KEY2, KEY3, KEY4, KEY5, KEY6, KEY7, KEY8
1
C318884
RESET
SW1
1
C318884
BOOT
SW2
5
C1017
600R
FB1, FB2, FB3, FB4, FB5
5
C15525
10uF
C1, C2, C3, C4, C7
7
C52923
1uF
C5, C6, C11, C13, C14, C22, C30
14
C1525
100nF
C8, C9, C10, C12, C19, C20, C21, C23 +6
4
C1554
20pF
C15, C16, C17, C18
Show 6 more
QtyPartRefs
2
C25905
5.1k
R1, R2
17
C25744
10k
R3, R5, R6, R8, R9, R10, R11, R12 +9
1
C25792
47k
R4
1
C82294
649
R7
2
C25190
27
R16, R17
2
C11702
1k
R22, R24

KP08Hub design files

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

KP08Hub: common questions

What microcontroller does the KP08Hub use?

The KP08Hub is built around the C2040, from the RP2040/RP2350 family.

How big is the KP08Hub PCB?

The KP08Hub measures 82.6 × 66 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KP08Hub?

87 components, from 26 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 KP08Hub design files?

From the siderakb/keypad 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 KP08Hub design in my own project?

Yes, under the terms of its MIT license, which siderakb chose for the repository.

Can I test firmware for the KP08Hub 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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