the key PID is raw. mode 01.
OC (hex) command.
RPM
and returns 2 bytes.
math:
256 x byte1 + Byte 2
----------------------------
4 (divided by 4)
if you use and ELM chip ?
it reads back in RPM directly, read the book on ELM chips from Canada. (needs to be Can-bus certified, not all are)
in quasi language
If RPM > 300, then run = true.
if Run then log.
this will work on all cars, made, IMO. (usa, obd2 cars)
OC (hex) command.
RPM
and returns 2 bytes.
math:
256 x byte1 + Byte 2
----------------------------
4 (divided by 4)
if you use and ELM chip ?
it reads back in RPM directly, read the book on ELM chips from Canada. (needs to be Can-bus certified, not all are)
in quasi language
If RPM > 300, then run = true.
if Run then log.
this will work on all cars, made, IMO. (usa, obd2 cars)
http://www.fixkick.com