BMW E30 318is - Nurburgring BTG: 9.38 (+data logging)

Touristenfahrten 23.08.2015
Car setup:
Stock M42 engine
4.27 LSD
Bilstein B8
H&R springs
e36 steering rack
Excentric M3 bushings
EBC brake pads
Street tyres, hankook Ventus Prime 2
Lap timing recording:
RaceChrone
Homemade data logger connected to smartphone:
Arduino Mega 2560
Adafruit Ultimate GPS Breakout
DFRobot Bluetooth V3
Rpm circuitry
Video:
Sony action cam hdr-as30v
DashWare
Sorry for the bad sound :(

[@WillemAartVanDorpen]

Nice work on the datalogger! The GPS speedometer is very responsive, did you consider using it to drive your in-car speedo? :-)

[@clemcout]

No, I do not intend to use it as the main speed information. The OEM speedo is enough accurate and using the arduino is not safe because you can lose the GPS signal and so the speed while driving (in tunnels for exemple).
It's just god as a second source of speed measurement.

[@77verdinho]

😪😪😪