Cheap and Easy 1volt signal for TPS 02 Logging - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Useful Saved Posts Useful info, FAQs, anything you don't want to get purged.

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 03-14-2005, 11:07 AM   #1
Junior Member
Thread Starter
 
Join Date: Dec 2004
Location: Austin, Texas
Posts: 130
Total Cats: 0
Default Cheap and Easy 1volt signal for TPS 02 Logging

If you have tried to use the TPS signal to monitor your 02 signal, you know that emanage just asks for a 0% Throttle and a 100% throttle. A stock o2 sensor sends out voltage from about .1v (when warm) to 1v.

So the bottom signal is easy to get, just use the o2 signal from the car's o2 sensor when it is cold, not running for the 0% signal.

For the 100% 1volt signal I used the following and hopefully it will help someone else.

Get a 1.55 volt watch battery. Solder two wires to it. One to the positive side, one to the negative side. On the positive side solder in line TWO diodes (I dont think it matters what the specs of the diode are, but the direction of the diode is important...band on diode away from battery). Check with a Multimeter. On my setup it yielded a 1.01v signal. It is a $4 1v signal, cheap bastard style.

When setting the parameters, I stuck the negative wire in with the emanage negative wire to ground it out and the positive goes to the emanage TPS wire.




Chris
kags1969 is offline   Reply With Quote
Old 03-14-2005, 11:35 AM   #2
AFM Crusader
iTrader: (18)
 
olderguy's Avatar
 
Join Date: Oct 2004
Location: Wayne, NJ
Posts: 4,438
Total Cats: 84
Default

Real nice and simple solution. Thanks. Maybe WR or Philip can drop it in the archives.
olderguy is offline   Reply With Quote
Old 03-15-2005, 10:41 PM   #3
Junior Member
Thread Starter
 
Join Date: Dec 2004
Location: Austin, Texas
Posts: 130
Total Cats: 0
Default

pic...

kags1969 is offline   Reply With Quote
Old 03-15-2005, 10:41 PM   #4
Junior Member
Thread Starter
 
Join Date: Dec 2004
Location: Austin, Texas
Posts: 130
Total Cats: 0
Default

kags1969 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 12:17 PM.