Search found 497 matches

by osborni
Tue Nov 10, 2015 12:57 am
Forum: Sensor-related questions
Topic: Oil temp and water temp sensors
Replies: 4
Views: 11690

You could drill and tap a ground screw into the adapter then use the Autometer one. Don't need much of a wire to ground it properly.

Otherwise, any combination of automotive or hardware store parts to get the right stand-off will work. I've used brass plumbers fittings before quite well.
by osborni
Sun Sep 13, 2015 7:50 pm
Forum: Sensor-related questions
Topic: Mk1 Focus Fuel level sender
Replies: 5
Views: 10547

You will need to know what the ohm range is for the sender. Wire up the pull up network with the appropriate resistor. Then feed in 1 liter (or 1/2 gallon - or so) at a time and take some data. If you know the sender's resistance range, you can approximate the amount with a linear extrapolation, but...
by osborni
Tue Aug 04, 2015 1:53 am
Forum: Sensor-related questions
Topic: Has anyone tried logging shock velocities? Sample rate ok?
Replies: 24
Views: 37209

Speed is the 1st derivative of displacement. Acceleration is the 2nd derivative.

http://www.dummies.com/how-to/content/h ... tion-.html

Differentiate displacement and you get speed.
Differentiate speed and you get acceleration.
by osborni
Tue May 12, 2015 3:59 pm
Forum: Installation problems
Topic: Noisy signals
Replies: 5
Views: 10984

That sort of noise is typical.

Experiment with rate of change and smoothing per Hustler. Step up the smoothing little by little until it looks OK. Rate of change, you should be able to do some basic math to figure out what is reasonable and what is not a reasonable about of rate change.
by osborni
Tue May 12, 2015 3:54 pm
Forum: General support questions
Topic: Dash 2 - Freezing and some other issues.
Replies: 5
Views: 5162

When I initially installed a Dash2 and a DL1, the Dash 2 would freeze up periodically. I reduced the frequency and channels that went to the Dash2 and the problem cleared up. I believe there isn't any error checking in the data stream so any errors that show up will fritz out the Dash2. Try reducing...
by osborni
Fri Apr 03, 2015 12:13 am
Forum: Installation questions
Topic: Dash2 input buttons
Replies: 6
Views: 11212

The dash buttons just pull to ground when you close them. So any system you make just needs to ground out the buttons.
by osborni
Fri Oct 31, 2014 1:01 pm
Forum: Sensor-related questions
Topic: Fuel Level Sender - Dash2 or DL1?
Replies: 6
Views: 13598

Yes, 100 Ohm, but take care with how many sensors you drive off the internal power supply. You may want to add up the total amp draw if you are driving more than a few sensors. V = I*R or in the case of a pull up: V / R = I Opinion, but feeding a sensor into the DL1, will give you more control on ho...
by osborni
Tue Sep 30, 2014 12:55 pm
Forum: Sensor-related questions
Topic: Wheel speed sensor
Replies: 1
Views: 4808

I believe the RT sensors with harness are ready to install, no resistor is required.
by osborni
Tue Sep 30, 2014 12:53 pm
Forum: Sensor-related questions
Topic: BMW E36 M3 S50B32 oil and water temperature senders
Replies: 10
Views: 18085

I did a quick google search and there are lots of folks who have taken data on Bosch sensors. The trick is to find the right one. However, since they are resistance based sensors, hooking up a pull up network to the sensor will likely mess up the data the ECU and the R-T part receives. I'd suggest i...
by osborni
Tue Sep 30, 2014 12:39 pm
Forum: Sensor-related questions
Topic: Dash 2
Replies: 1
Views: 3701

Are you using a pull up/down network for your fuel level? You could have a short someplace.
by osborni
Wed Apr 16, 2014 7:12 pm
Forum: How do I...
Topic: RPM Pickup Problems
Replies: 3
Views: 5598

Spark leads are pretty noisy.

Can you use the feed from an injector instead? (sorry, not know Porsche motors - injected or carbed?)
by osborni
Thu Apr 03, 2014 12:43 am
Forum: General support questions
Topic: Engine and wheel speed drop down above certain values
Replies: 9
Views: 10410

Since you are welding on a target. Just double or triple it and see what happens
by osborni
Tue Apr 01, 2014 12:09 pm
Forum: General support questions
Topic: Engine and wheel speed drop down above certain values
Replies: 9
Views: 10410

Are you using hall effect sensors? If the iron passes the sensor too fast it might not read. My wheel speed sensors fail above ~110 mph or so. I simply need to install a bigger ferrous target for the sensor.
by osborni
Thu Feb 27, 2014 4:09 pm
Forum: Installation questions
Topic: DL1 - Multiple Sensor - Messy wiring
Replies: 2
Views: 7741

1) add up the current draw from all your sensors and make sure you don't exceed the DL1's capability. To avoid potentially damaging the expensive DL1, I use a linear voltage regulator, a couple of caps and a prototype board for about $10 USD. 2) Wires - I purchased a spool of 3 conductor ~20 gauge, ...
by osborni
Wed Jan 08, 2014 4:22 pm
Forum: Sensor-related questions
Topic: Lotus OEM ABS Sensors
Replies: 6
Views: 10506

I used a LM1815 and a divider (though I can't remember the code).

Works on the bench, but haven't mounted it to the car yet.

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