Hi J Monroe,
But for a mechanic injected diesel engine...
I got success inputing throttle pot signal. Quite simple.
Now I need to input rpm from the engine.
I have a variable reluctance sensor in the RD28 diesel engine, which send a analog signal.
Then, I input that signal to a LM1906 ignition & tachometer driver. This signal becomes square and I drive my VDO analog tacho with it.
However, when I try to input that signal to an analog input pin on a Arduino clon, to make calculations, there are some numbers coming on the display, but no response to pressing the throttle.
Can you help with that? What is the correct way to input such signal to a Arduino circuit?
Maybe a simple rpm input routine will help.
Should I use a digital input instead?
Old Beaver
Quote:
Originally Posted by jmonroe
Anyone interested in developing an OBD Arduino based fuel economy gauge should post here. So far, I have been working on one based around an ELM323 OBD to RS232 adapter. Some previous discussion on this was on the other thread ( http://ecomodder.com/forum/showthrea...ge-1428-9.html)
Currently, I was able to connect to the ELM and send it commands. However, when sending OBD commands (010c), the response is "ELM INIT:...>" without ERROR or OK and no real data is received. |