Cardash uses a Raspberry Pi witha 2.8" TFT touchscreen to display ECU data via the OBD-II protocol.

The data is processed by Nodejs and sent to a webpage that uses Socket.io to update in real time. Chromium is used to display the web page. Tapping the touchscreen display allows you to cycle through different gauges.

https://www.youtube.com/watch?v=3IDu1S85dnE

• Raspberry Pi (Model B or B+)
• Adafruit PiTFT Touchscreen Display
• Plugable USB Bluetooth 4.0 Low Energy Micro Adapter
• ELM327 Bluetooth Adapter
• Micro USB Car Charger

• Raspbian OS
• Node.js
• Socket.io
• Chromium

The idea was based heavily on this and the code was based heavily on this.