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HS KS-SLD MX

arrowtype·80forty·HS_KS-SLD_MX/HS_KS-SLD_MX.kicad_pcb

HS KS-SLD MX PCB layout, top view — open source RP2040/RP2350 board by arrowtype
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About the HS KS-SLD MX PCB

HS KS-SLD MX is an open source RP2040/RP2350 PCB design by arrowtype, published on GitHub under the MIT license. It is a 2-layer board measuring 274.6 × 79.4 mm, with 142 components from 20 distinct parts.

Its main chip is the RP2040TR7, from the RP2040/RP2350 family. Other key parts include the XC6206PXXXMR, SRV05-4 and W25Q128JVS. By type, the board carries 53 diodes, 14 capacitors, 9 resistors, 4 ICs, 3 switches and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

The utility of an 80% keyboard in a 40% layout

The utility of an 80% keyboard in a 40% form factor.

Inspired by the design of the OP-1 Synthesizer, the explorative spirit of the 40% & 30% keyboard community (especially boards like ChonkyKong, CutiePie, and Ortho Cajal), and the tactile reference points and minimized finger-travel of many split, ergonomic keyboards. The 80forty was partly motivated by the appearance of Deadline Studio DOYS keycaps, but it works with any MX-compatible keycaps.

HS KS-SLD MX, from the project README
From the project README

Main components on the HS KS-SLD MX

XC6206PXXXMRSRV05-4W25Q128JVSRP2040TR7

HS KS-SLD MX bill of materials (BOM)

142 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XC6206PXXXMR
XC6206PxxxMR
U1
1
SRV05-4
U2
1
W25Q128JVS
U3
1
RP2040TR7
U4
1
CRYSTAL_GND24_SMALL
Crystal_GND24_Small
Y1
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J1
1
C883133
Fuse_Small
F1
53
MX-NoLED
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +45
2
MX_stab
S1, S2
1
RotaryEncoder_Switch
SW1
2
C318884
SW_SPST
SWR1, SWR2
1
SK6812MINI-E
LED1
53
C81598
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +45
4
1u
C1, C2, C4, C5
7
100N
100n
C3, C6, C7, C8, C9, C10, C15
2
22P
22p
C12, C13
1
10U
10u
C14
5
5.1K
5.1k
R1, R2, R3, R4, R6
2
1k
R5, R9
2
27
R7, R8

HS KS-SLD MX design files

The KiCad project lives in the arrowtype/80forty repository on GitHub; these links point at the commit this page was built from.

HS KS-SLD MX: common questions

What microcontroller does the HS KS-SLD MX use?

The HS KS-SLD MX is built around the RP2040TR7, from the RP2040/RP2350 family.

How big is the HS KS-SLD MX PCB?

The HS KS-SLD MX measures 274.6 × 79.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the HS KS-SLD MX?

142 components, from 20 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 HS KS-SLD MX design files?

From the arrowtype/80forty 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 HS KS-SLD MX design in my own project?

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

Can I test firmware for the HS KS-SLD MX 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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