hletrd / LED_bus_panel

An LED panel resembling that at bus stop in Seoul

LED bus panel

• 서울 버스 전광판 제작용 파일
• 제작과정: https://atik.kr/2021/05/bus-panel/

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Bill of materials

Parts

• 6 * P4 RGB LED panels (64x32pixels, 256x128mm), available on AliExpress
• A Raspberry Pi 4 + An SD card (>=16GB)
• Adafruit RGB matrix HAT
• A 5V, >150W(>30A) SMPS

Materials, with some workings

• 5mm MDF / PMMA sheet (to build the frame)
  • AutoCAD drawing: ledpanel_frame.dwg
  • 레이저 커터로 절단해서 프레임을 제작함
    • 위 예시는 VLS6.60 레이저 커터 + 5mm MDF 사용
  • 패널의 종류에 따라 나사홀의 위치가 다를 수 있음.
  • 공차에 따라 나사홀 크기 조절이 필요할 수 있음.
• 3D printer (to make the stand)
  • 3D printable model: ledpanel_stand.stl
  • 3D 프린터로 받침대를 출력함
    • 위 예시는 Anycubic Photon Mono SE + Basic resin 사용
  • 프린터 및 소재의 공차에 따라 나사홀 크기 조절이 필요할 수 있음.
• Power distribution PCB
  • Gerber file: power_distribution_board_gerber.zip

Miscs

• M3 bolts / nuts (to assemble the frames and stands)
  • M3 10mm, 15mm, 20mm bolts
  • M3 nuts
• Wirings (for power supply)
  • JST VH 3.96mm 4P through-hole connector, and wirings
• Wirings (for HUB75 connection)
  • 2x10pin 2.54mm IDC cables

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Python library

Requirements

• Python 3
• Install PIL, NumPy
• Install RPi RGB LED matrix with its Python bindings.
• Put the library files in /python/library/ directory into the project folder, or install the module system-wide.
  • To install the module system-wide

  cd python/library
  python setup.py install

Running the examples

• Set the required parameters in xylopanel library.
  • Refer to the Panel.__init__() of python/library/xylopanel/xylopanel.py
• Run sample scripts in /python/example/ directory with sudo.