[lubos]

I programmed last week Source code for Arduino IDE is free here https://github.com/nickn17/enirodashboard
Uses OBD2 BLE4.0 adapter + cheap board from banggood or ebay (TTGO LILYGO T4) . Link to hw is included in readme file.

 

[Edd Beesley]

Anybody else had a go at building one of these?

 

[idiotzoo]

Having seen this, it's very tempting....