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Arduino/ELM327-based project to create a car head's up display

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ArduHUD

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This is a repository for one of my personal hobby projects to design and build a car heads up display (HUD). This HUD displays car speed (in mph) and RPM in real-time to the driver. The device itself includes the following:

  • 1x ELM327 bluetooth OBD2 scanner
  • 1x Arduino Teensy 3.X
  • 1x Arduino ESP32
  • 2x 7-segment LED displays
  • 1x 10-segment LED bar display
  • 4x small PCB standoffs
  • 35x 75 Ohm resistors
  • 1x screw terminal
  • 1x SSD1331 OLED display
  • 1x plexiglass sheet
  • 1x winshield reflective film
  • 3D printed housing

For build instructions, see my instructable here.