Circuller-mini

A small & round game controller that uses a 5.5' touchscreen and few buttons.

中文文档 (will be written after the project is complete)

Requirements

• 3D printed cases Print details

• Waveshare 5.5inch 1440x2560 LCD

• Cables

  • HDMI
  • micro-USB to USB-A x2 for Touch Display Power&Touch
  • USB-C cable for PCB
  • XH2.54-3pin cable

• M3 screws

• PCB (probably no perfboard support)

• Keycaps (print in the model folder or buy existing low-profiled keycaps) x8

PCB BOM

All capacitors and resistors are in the 0603 package.

Board 1:

• Gateron low-profiled key switch KS-33 / any other switch compatible x8
• 2x1x0.6mm switch button for reset x1
• WS2812B 6028/3528 RGB LED x8
• ATMEGA32U4 (needed to be bootloader pre-loaded)
• 1uF Capacitor x1
• 22pF Capacitor x2
• 100nF Capacitor x12
• 470nF Capacitor x1
• 10k ohm Resistor x2
• 22 ohm Resistor x2
• 5.1k ohm Resistor x2
• 2.5A/32V FUSE 0805 x1
• ZMM3V6 diode x2
• XH2.54-WI-3P x1
• TYPE-C 16PIN connector x1
• 16MHZ Oscillator x1

Board 2 x3:

• WS2812B 6028/3528 RGB LED x3
• XH2.54-WI-3P x5
• 100nF Capacitor x3

PCB detail

TBD

Assemble

TBD

Firmware load

TBD

Windows tool config.ini

Tested work on Wireshark 5.5-inch 2k display.

[Config]
1=Circuller
2=2250
3=1710
4=-165
5=0

TODO

• rewrite the code

  • reorder LED part
  • rewrite debounce, reference: https://github.com/qmk/qmk_firmware/blob/master/docs/feature_debounce_type.md

• Redo the modeling

• Model the case (probably two versions: 1. plain like a tablet, 2. assemble like a real wash machine)

Credit

This design and repository are not meant to violate any copyrighted content.

No games are/will be tested, and I am unaware of which game this controller can work with.

Some references:

LED support: https://github.com/Sucareto/Mai2Touch

Modeling reference: https://github.com/xiaopeng12138/MaiDXR