CANDisplay

A display device for CAN data.

Capabilities

• Connect to the CAN bus and get data/power from there
• Display shift light via an array of neopixels
• Display additional data via an OLED display
• Control display data via a rotary encoder
• (backlog) On-device configuration

Connections

• SSD1306

  • SCL -> D1
  • SDA -> D2

• KY040

  • CLK -> D5
  • DT -> D6
  • SW -> D7

• WS2812

  • DI -> D8

UX tree

Home <ShowDefaultScreen()>

• Settings
  • Info <ShowSplashScreen()>
  • Max RPM (0...20000 step 500)
  • Brightness
    • Autodim
      • Enabled
      • Disabled
    • Day (0...255 step 10)
    • Night (0...255 step 10)
    • Settings -> Settings
  • Test
    • RPM (0...20000 step 500)
    • Strip <StripLaunch()>
    • Settings -> Settings
  • Display // this sets the info shown on the SSD1306 display
    • Engine speed
    • Vehicle speed
    • ? Turbo RPM
    • ? Turbo PSI
    • ? (other turbo params)
    • Settings -> Settings
  • Pattern // this sets the patterns for the WS2812 LED strip
    • ITA // (GREENx1/3, WHITEx1/3, REDx1/3, BLUE BLINKxALL)
    • F1 // (GREENx1/3, YELLOWx1/3, BLUEx1/3, BLUE BLINKxALL)
  • Exit -> Home

The FIAT 500 Abarth is KWP FAST CAN 29bit, its using the ISO 15765-4 protocol.

Four variants of ISO15765 exist. They differ only in identifier length and bus speed:

ISO 15765-4 CAN (11 bit ID,500 Kbaud) ISO 15765-4 CAN (29 bit ID,500 Kbaud) ISO 15765-4 CAN (11 bit ID,250 Kbaud) ISO 15765-4 CAN (29 bit ID,250 Kbaud)

https://www.fiat500owners.com/threads/fiat-obd2-protocol.100978/

http://www.obdtester.com/obd2_protocols

https://www.fiat500owners.com/threads/500e-can-bus-decoding.150166/#post-1299589