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CTIS and Arduino
- Thread starter Plasa
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Hello all!
As announced, here a short and unprofessional video of my Arduino CTIS ECU. It's an example on how it works when pressure is too low, it works also when pressure is to high.
You can set 4 diffrent pressures depending your needs, and works with 4x4 and 6x6 trucks as well. You do not need to change anything on truck side, just plug in and hope there are not other faults in the entire system, like stuck pipes, non closing wheel valves, leaking blow out valves etc...
Christian
As announced, here a short and unprofessional video of my Arduino CTIS ECU. It's an example on how it works when pressure is too low, it works also when pressure is to high.
You can set 4 diffrent pressures depending your needs, and works with 4x4 and 6x6 trucks as well. You do not need to change anything on truck side, just plug in and hope there are not other faults in the entire system, like stuck pipes, non closing wheel valves, leaking blow out valves etc...
Christian
Third From Texas
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Outstanding job, sir !
Thank you sir!
Christian
ramdough
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Does this system detect the same faults as the original system, and let you know what they are?
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There are some error messages, like PCU sensor fault, leaking wheel valves (if there is a heavy leakage), but not more. The ECU do not read the speed sensor to warn if you are in overspeed with low pressure.
Christian
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I wonder how hard it would be to add that?
coachgeo
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lol....
.. if a person needs a warning about that..... they should not own the truck. Govt. figured even stupid soldiers did not need a warning about it .... (cause the ride was so obvious 
to know to slow your ass down.? 
)
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Thank you SIR!
AlexWilson
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Good morning, just joined here but have been observing for a while. My M1078a0 came to me with a bricked controller. I'm wondering if you're still making and selling the Arduino kits? I'd love to pick one up from you if you areThank you SIR!
Third From Texas
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My controller is going tits-up. It's been acting up for some time.
Mine is an A1R with the C7 and all sorts of fun electrical bits. The controller is different than the A0 models (I'm told that they are totally incompatible). I'm not really interested in spending a grand on the correct OEM controller, and I've always said that I wanted to go Arduino when the time comes.
But the problem is: what exactly is the difference between the older A0 controllers and the later A1R controllers? And can it be negated via Arduino programming?
Mine is an A1R with the C7 and all sorts of fun electrical bits. The controller is different than the A0 models (I'm told that they are totally incompatible). I'm not really interested in spending a grand on the correct OEM controller, and I've always said that I wanted to go Arduino when the time comes.
But the problem is: what exactly is the difference between the older A0 controllers and the later A1R controllers? And can it be negated via Arduino programming?
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I'm not sure if there is a separate A1R controller, but there are A0 (green) and A1 (black) controllers. The black ones are programmed differently (PSI), and did not work in my A0 (for whatever reason... it could have been bad, or just not liked the A0, but it just blinked "CTIS Overspeed" all the time).
Since the Arduino route is circumventing most of the original circuitry, it may still work.
B-Dog
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Agreed^^
The arduino controller (in this thread) only integrates with the (3) solenoids and pressure sensor inside the controller under the passenger dash. If you have that, you're probably good to go.
Ronmar
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Yea they all use the same PCU and sensor…. Now wether they assigned different wiring for that at the controller end of the harness may be an issue. They do have different dash harnesses in the different trucks…
I ordered an Arduino controller from Plasa. It’s in transit right now. It’s completely customizable on the fly. He has been building them and updating them for a while.
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What I know (and I do not know much) is that from A1 (the black ECU) speed signal is not a digital signal, but on CAN BUS. This can explain why overspeed warning do not work. The entire ctis is from dana/spicer, I don't think they changed the wiring, if it's always the same round connection...
Solenoids and pressure sensor / transducer are the same. But I can immagine that if the speed signal is not correct, the OEM ECU will not work to prevent damages.
Christian
Solenoids and pressure sensor / transducer are the same. But I can immagine that if the speed signal is not correct, the OEM ECU will not work to prevent damages.
Christian
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I am interested in a controller that will control the front and rear axles separately, using a set point, instead of selectable pre-sets.
Ronmar
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You would need a different PCU or another set of intermediary solenoid valves to divide up the system into front and rear sections…
Right, you have to split the entire CTIS system in 2 parts, front and rear. No ECU for now will handle that, except if you add a intermediary valve and switch from front to back manually. So PCU and ECU do not know that only 1 axle is measured. But you can't set 2 diffrent pressures, so you have to change ECU anyway.
Christian
Christian