ardunio madness

This guy is s real macgyver...subscribed..

This is really cool. I'm glad you are working at this because this is exactly what I was considering doing to my truck. My problem is I know just enough to be dangerous. Everything makes sense so far.

What I came up with is to mimic one them fancy new gauge clusters.





Yes could had drolled over some code for a good minute to make what I had work, but past me has not been compleating coding. I am in need of the gauges, so got a utcomp pro to do just that out a box. The led display is better quality and should be a sorted out device, dose trip but would need a flow sensors, has one switched output that could set up for glow plugs, and has data logging.




Some cutting and manipulating was required.

Not gonna lie that is actually really cool
Are you planning to upload the code to Github for others to try using it?

Nero said:

Are you planning to upload the code to Github for others to try using it?

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It comes pre programed and has a windows app to configure it.

utcomp pro

That’s a pretty cool looking product.

Got everthing to play nice together.





This it sitting in the truck.

Im going to add a exhaust back pressure sensor to the list of sensors Im going to use, want to have a means to get ratio to boost. In digging on info that im finding little, theres mention a few times of a pilot tube for accurate reading. Im unsure on this and would like to see if any one could help shed light on it. Say with this pic of one off a powerstroke and a cummins ISL/ISC/ISX has one similar, the one off a duramax uses a fallible rubber hose and plastic sensor. For ones like this, dose someone have a manifold laying around that they can photograph the inside? I would like to know if there is a added tube or orifice on the manifod side that would also be needed.

The tube is just there to keep the sensor away from the heat, there is no restriction in the system. Just so you know, the 7.3ps sensor goes up to about 40psi, the 6.0ps and 6.4ps go to about 80psi.

ifrythings said:

The tube is just there to keep the sensor away from the heat, there is no restriction in the system. Just so you know, the 7.3ps senor goes up to about 40psi, the 6.0ps and 6.4 go to about 80psi.

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Thanks and that 6.0/6.4 would give a better window of operation. In a search on readings, not sure what I found is accurate then. So will have to get one and test the voltage at a give psi, that is unless you have a chart for one.

voltage reading 94-97 7.3



Edit: you might be right that there is nothing special about it except to get heat away from the sensor, this is a bung I found for the 6.4.

Yep he's right the only purpose of it is to protect the sensor from the heat.
Which means you can do it any way that floats your boat from a fab/cost effective solution.

ifrythings said:

Id recomend a two wire temp probe to prevent ground loops in your signal return, easiest thing would be run one dedicated ground for iat, ect, oil temp, oil pressure, map, coolant level (if used) trans temp, ect..

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Thanks for the tip.

1mouse3 said:

4 bar map
BOSCH 0280130037 coolent temp
Auto Meter 2242 oil presser
Auto Meter 2253 oil temp (mia)
EGT-CP-072-S211-SS-N EGT

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Past me grabed a poor selection of sensor. The oil temp and pressure sensor are both single wire that use block ground, so those arnt a good choice. That coolant temp has no voltage chart, so would have to test it get one. Also that egt sensor is for small gas engine with out a turbo, so will hope could make do with it for now.


This may be the list of sensor I will go with, those digital presure sensor will eat a lot of cost so can not get them all right now. As for map sensor to get boost reading, Im unsure on it and with list of inputs see need for it to be digital.



This is a list of the input and outputs I have to work with on the utcomp pro.




Edit: cant justafiy the cost of the auto meter presure sensor for fuel 15psi and oil 60psi at the moment, so got some dirt cheap ones. Yes I know these are bound to leak and give iffy reading, but hope they will last long enough to kick the can down the road.

ebay special sensor


Also found a data sheet on this air temp sensor, so this will the one I will use.

data sheet

@1mouse3 what I did for sensors was go to a wrecking yard and pull a bunch off of trucks, most will be good with the odd bad one. The 7.3l EBP sensor is a 1/8”npt, I’m using one for boost and fuel pressure as it will show vacuum(more about this later), I have a EOP sensor from some Chevy truck (I think ~2010 4.3L) goes up to 120psi and is 1/4”npt, also have an AC pressure sensor from a 2011+ 6.7 that goes up to 500psi. I’m using a 6.4L EGT probe(s in the future) as they are again pretty much free and lots out there and they go up to 1750f (1000c). I’m using fords 2 wire temp sensors for measuring ECT, EOT, FT, IAT, MAT, TOT(the E4OD built in temp sensor is the same sensor in a different package), may put sensors in both diffs, transfer case and maybe power steering for temp.

These graphs are PSI absolute, you have to subtract BARO off of them to get gauge pressure.

Note: your values maybe a bit different then mine depending on your altitude (BARO)

@ifrythings what does your monitor setup look like? That is a lot of sensors to switch between or monitor. You have got me intrigued

03wr250f said:

@ifrythings what does your monitor setup look like? That is a lot of sensors to switch between or monitor. You have got me intrigued

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My setup started was this, worked pretty good but wasn’t very pretty.


Then I made this to clean it up, it’s a touch screen so I can easily switch between different pages to see more info but it’s a bit small.

This is the latest thing I’m working on that will replace the instrument cluster, 7” touch display, I’m not much of a graphics designer so it’s a bit on the blah non flashy side but has everything that’s needed. Life has been a bit busy these last few years so progress has been slow.


I’m using an Arduino nano to read the sensors, I have a 16ch mux(16in to 1out electrically selectable switch) that allows me to read all the temperature and pressure sensors using only 4 wires.