Thread: Arduino Modular Engine Sensors Unit (~$50)

Originally Posted by Dougal

Yes, the tacho, temperature and fuel needles in an 85 RRC cluster. Which are the three that are never better than a rough indication (sometimes on strike) of what is actually happening.

It's now diesel so the tacho could be alternator fed or from the 0-3v converter box I conjured up a few years back to make it work. Fuel level and water temp senders are variable resistance to earth, I'm not sure what the ohm ranges are right now or even what they are supposed to be.

Speaking of fuel gauge, on the weekend I knew I was getting close to empty based on the trip metre. 90 litre tank in my Disco. Fuel gauge showed just under half, no where near the red zone. I filled up at the servo and the pump didn't stop until 88.5 litres. Based on the mileage I did on that tank, I had 12kms left before empty.

Originally Posted by alexturner

Ahhh very cool,

I'll have to upload the code to the unit I've built anyone had any luck with the obd2 integration?

Alex

Sent from my GT-I9300 using Tapatalk 2

some things i have come across in the past that might help, no idea though...
Antipasto Hardware Blog: Introducing the LCDash GT: Hacking Your Engine with Open Source Hardware

and...

http://code.google.com/p/opengauge/

I finally made some time to sit down with this for a bit more past 2 days. Here's a photo of it so far, ready for testing in car. Currently just monitors Coolant Temp, with Alarm and Max reading. Will add oil pressure sensor support next, then make a pcb boxed prototype.

Nothing like a bit of progress! Have you considered Auto Trans Temp?
very handy for towing!

Watching with interest..

Good work!

I've got an Arduino board here and a few one-wire temp sensors - just need to make time to play with it.

Steve

Originally Posted by FANTOM P38

Nothing like a bit of progress! Have you considered Auto Trans Temp?
very handy for towing!

sure, im trying to make something as open ended us possible so its easy to adapt to as many sensors and size screen as desired.

Something I've been working on also. For my rear air suspension to show pressure in each bag going to add bit more to it though

[ame="http://www.youtube.com/watch?v=qhem0H95to0"]Ride height gauges - YouTube[/ame]