HardLabs

Keyboard/Trackball Combo - Main Board

blueOkiris·ps-ktc·pcb/usb-mcu/usb-mcu.kicad_pcb

Keyboard/Trackball Combo - Main Board layout, top view — open source WCH CH32/CH55x board by blueOkiris

About the Keyboard/Trackball Combo - Main Board

Keyboard/Trackball Combo - Main Board is an open source WCH CH32/CH55x PCB design by blueOkiris, published on GitHub. It is a 2-layer board measuring 44.5 × 27.9 mm, with 14 components from 10 distinct parts.

Its main chip is the SOIC-16_3.9x9.9mm_Pitch1.27mm, from the WCH CH32/CH55x family.

It belongs with the keyboards designs in this gallery.

From the project

A keyboard and trackball in one, for efficient computer usage.

A keyboard and trackball in one, for efficient computer usage.

Like the PS-OHK, the PS-KTC attempts to provide an efficiently laid out keyboard which doesn't require moving your hands back and forth from the mouse.

Unlike the PS-OHK, it accomplishes this while allowing for typing quickly via using both hands. This is done by placing a trackball in the middle of the keyboard!

Keyboard/Trackball Combo - Main Board bill of materials (BOM)

14 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
~
IC_MCU1
1
~
JKEYS1
2
Conn_01x04_Pin
JMSBTN1, JMSMOV1
1
~
JPWR1
1
~
J_USB1
2
5.1k
R_CC1, R_CC2
2
1-10k
R_I2C1, R_I2C2
1
10k
R_PROG1
1
~
SW_PROG1
2
100NF
100n
C1, C2

Keyboard/Trackball Combo - Main Board design files

The KiCad project lives in the blueOkiris/ps-ktc repository on GitHub; these links point at the commit this page was built from.

Keyboard/Trackball Combo - Main Board: common questions

What microcontroller does the Keyboard/Trackball Combo - Main Board use?

The Keyboard/Trackball Combo - Main Board is built around the SOIC-16_3.9x9.9mm_Pitch1.27mm, from the WCH CH32/CH55x family.

How big is the Keyboard/Trackball Combo - Main Board?

The Keyboard/Trackball Combo - Main Board measures 44.5 × 27.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Keyboard/Trackball Combo - Main Board?

14 components, from 10 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 Keyboard/Trackball Combo - Main Board design files?

From the blueOkiris/ps-ktc 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 Keyboard/Trackball Combo - Main Board design in my own project?

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

Can I test firmware for the Keyboard/Trackball Combo - Main Board 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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