I'm sure this has been asked before but I couldn't find it trying to search.
I have an Autometer oil pressure gauge and I was wondering if I could tap that single sensor to run into both the gauge and the Megasquirt (so I can datalog it). I would assume so but I want to double check.
Thanks,
-Aaron
one 0-5v sensor running on both MS and ext. gauge?
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
-
Bernard Fife
- Master Squirter
- Posts: 475
- Joined: Thu Oct 29, 2009 12:54 pm
Re: one 0-5v sensor running on both MS and ext. gauge?
Aircooled,
The inputs on MegaSquirt are high impedance. That means they draw relatively small currents from voltage signals, and thus they can share voltage signals with other devices.
In general, where this doesn't work is sharing resistance signals (typically temperature sensors) between ECUs.
There is more on this here: http://www.megamanual.com/v22manual/sharesen.htm (this is specifically about sharing sensors with other ECUs, but sharing with a gauge is very similar).
Lance.
The inputs on MegaSquirt are high impedance. That means they draw relatively small currents from voltage signals, and thus they can share voltage signals with other devices.
In general, where this doesn't work is sharing resistance signals (typically temperature sensors) between ECUs.
There is more on this here: http://www.megamanual.com/v22manual/sharesen.htm (this is specifically about sharing sensors with other ECUs, but sharing with a gauge is very similar).
Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw