miata rpm frequency pick-up - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 09-28-2009, 05:55 PM   #1
Elite Member
Thread Starter
iTrader: (24)
 
Join Date: Jun 2007
Location: Sherman Oaks, CA
Posts: 4,482
Total Cats: 3
Default miata rpm frequency pick-up

looking for a best place to pick up rpm signal to feed to arduino through this frequency to voltage converter.

also, does anyone know what SCALE and PPR would be correct for miata to fit in this formula?

RPM = SCALE * INPUT * 60 / PPR

INPUT = Hz input from RPM pick-up
PPR = pulses per revolution
UrbanSoot is offline   Reply With Quote
Old 09-28-2009, 05:57 PM   #2
Elite Member
iTrader: (12)
 
Join Date: Aug 2006
Location: Central-ish VA
Posts: 4,449
Total Cats: 16
Default

Spot on back of tach I believe. outputs 4 PPR?
neogenesis2004 is offline   Reply With Quote
Old 09-28-2009, 06:02 PM   #3
Elite Member
Thread Starter
iTrader: (24)
 
Join Date: Jun 2007
Location: Sherman Oaks, CA
Posts: 4,482
Total Cats: 3
Default

ive looked online and it seems like 4-bangers usually output 2 pulses per revolution and 6-bangers output 3 pulses per revolution. grrr... i really dont want to sit in the car with a laptop, breadboard, and shitload of wires to figure it out...

think i could use pick-up at the coil or cas? not even sure which one it would be. id rather not take half of my car apart to get it working
UrbanSoot is offline   Reply With Quote
Old 09-28-2009, 08:24 PM   #4
Elite Member
Thread Starter
iTrader: (24)
 
Join Date: Jun 2007
Location: Sherman Oaks, CA
Posts: 4,482
Total Cats: 3
Default

i think neogenesis and myself got it figured out. 7,000RPM would be 1.499V on this converter considering that we get 4 pulses per second.
UrbanSoot is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
15x10 - 15x11 6UL @ 949 Racing emilio700 Wheels and Tires 151 06-02-2017 03:36 PM
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 11:59 PM
VR6 to Miata Swap ScrapinMX5 Meet and Greet 8 09-28-2015 02:04 PM
First Miata Rhidell Meet and Greet 1 09-27-2015 10:42 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:13 AM.