I want to read dle engine rpm from the ignition box with arduino board,
The engine works with cdi ignition which has a connection(3 wires like servo connection) to an external tachometer (rpm meter)
How can I connect the ignition box to the arduino to get the rpm?
The cdi ignition:
http://www.dle-engines.com/dleg0031-dle30/dleg0031-ignition-lg.jpg
The tachometer:
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXZRM8
Thank you!
Draw a schematic and take a photo of it and post it..
Abdalayzer:
How can I connect the ignition box to the arduino to get the rpm?
Very Carefully - so that the 12v+ car system does not destroy your 5v Arduino.
...R
I'm not a car guy. I have 30 years ELECTRONICS experience but your going to have to post a schematic for me to help you.
The engine works with cdi ignition which has a connection(3 wires like servo connection) to an external tachometer (rpm meter)
How can I connect the ignition box to the arduino to get the rpm?
What he really needs to provide is more information about the CDI system.
The information he needs is already present on the three wires (probably the white one) going to the display. That information is most likely in the form of pulses related to the RPM although it could possibly be serial speed data already converted in the big silver box.
Don
Take a look under "files" tab...maybe some help.
