HardLabs

Ps2usb

rasteri·HIDman·hardware/axp/ps2usb.kicad_pcb

Ps2usb PCB layout, top view — open source WCH CH32/CH55x board by rasteri

About the Ps2usb PCB

Ps2usb is an open source WCH CH32/CH55x PCB design by rasteri, published on GitHub. It is a 2-layer board measuring 40 × 55 mm, with 25 components from 13 distinct parts.

Its main chip is the CH559L, from the WCH CH32/CH55x family. Other key parts include the MAX232IDR. By type, the board carries 12 capacitors, 4 connectors, 3 resistors, 2 ICs, 1 crystal and 1 fuse.

It belongs with the keyboards designs in this gallery.

From the project

Adapting USB devices to work on old computers

HIDman is an open source device to allow the use of modern USB keyboards and mice on legacy PCs.

Peripherals that support legacy PCs are becoming hard to find, especially for the very first PCs. This project aims to provide a simple cheap solution that will cover everything from the original IBM 5150 PC all the way up to modern computers that have PS/2 ports.

Main components on the Ps2usb

CH559LMAX232IDR

Ps2usb bill of materials (BOM)

25 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CH559L
CH559L-less
WCH
U1
1
MAX232IDR
MAX232
Texas Instruments
U2
1
X322512MSB4SI
12MHz
YXC
Y1
2
DIN-603
DIN8
HOOYA
J1, J3
1
USB1035
J2
1
Conn_01x03_Pin
J5
1
BSMD1206-050-30V
500mA
BHFUSE
F1
1
KH-6X6X9H-ZJ
RATACSWITCH
Shenzhen Kinghelm Elec
S1
1
P4-1204RGBWS2-1.5T-A
B3173BGR-20C0001Q3U1930
TUOZHAN
D1
10
CL10A335KP8NNNC
3.3u
Samsung
C1, C2, C3, C4, C6, C7, C8, C9 +2
2
CC0603JRNPO9BN100
10pF
YAGEO
C5, C11
2
YC164-FR-071KL
1K
YAGEO
RN1, RN2
1
YC164-JR-07120RL
150
YAGEO
RN3

Ps2usb design files

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

Ps2usb: common questions

What microcontroller does the Ps2usb use?

The Ps2usb is built around the CH559L, from the WCH CH32/CH55x family.

How big is the Ps2usb PCB?

The Ps2usb measures 40 × 55 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ps2usb?

25 components, from 13 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 Ps2usb design files?

From the rasteri/HIDman 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 Ps2usb design in my own project?

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

Can I test firmware for the Ps2usb without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug WCH CH32/CH55x firmware against it before you order a PCB.

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