View Single Post
Old 03-16-2012, 03:57 PM   #5566 (permalink)
jackbauer
Master EcoModder
 
jackbauer's Avatar
 
Join Date: Sep 2009
Location: Ireland
Posts: 734
Thanks: 26
Thanked 304 Times in 171 Posts
I have a special version of the code that supports tach input with 2 pulses per rev (4 cyl). Its accurate to about 150rpm and has saved me on many the occasion from an overspeed. The hardware is comprised of a 4v7 zener , 2k2 resistor and a .1uf ceramic on one of the icsp pins (forget which one!). A later code also has brake input in a similar fashion.
__________________
Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
  Reply With Quote