He351ve stand alone Arduino controller code for 2nd Gen Cummins

[Mopar1973Man]

The Jacobs brake uses a pin on the ECM for arm/disarming the exhaust brake. So I'm sure there is a way to use that pin. This gives 3 seconds of shift time before engaging.

[Yankneck696]

Well, which flippin' pin? I am trying to tailor this somewhat to your manual trans.....

 

Ed

[Mopar1973Man]

Hmmm... I'll have to look. Be tomorrow when I'm doing my intake gaskets I'll take a peek.

[bjytech]

A quick google search returns that pin 20 gives a delayed 12v source after throttle goes to idle.

[Yankneck696]

That will still affect the E-brake. Michael would like the cruise control to work the EB function.

 

Ed

[Mopar1973Man]

That would be the ultimate function to have a cruise control exhaust brake. But just having a delay for shifting is good.

[Me78569]

Cowboy/ed/smart people

 

I think I have this almost put into my code for doing the code for doing turbo speed.
 

I am getting a final compile error of

"D_ReadSensors.ino:40:18: error: invalid types 'char[int]' for array subscript:"

 

 

SensorValues[8][0] = ((30000000UL * RPMPulses)/(RPMTimeLast - RPMTimeStart));

 

I am guessing I didn't define "SensorValues" but I am not sure how to define it or if I need to.

 

thoughts?

[Cowboy]

SensorValues[8][0] is just an 2D array, I use it in my code to make processing the values easier.  You can replace it with 

TurboRPM = ((60000000UL * RPMPulses)/(RPMTimeLast - RPMTimeStart));

 and then put this globally. 

long TurboRPM = 0;

[Me78569]

That's what I was guessing. 

 

Thanks, 

[Me78569]

One more dumb question,

 

RPMPulses comes from "#define SpeedSensorPin 7" above, do I analog read that pin? 

 

I don't think the he351ve sensor is a hall sensor is it?  I found out what it was a few weeks ago, but I can't seem to remember what it was or remember where I found what kind of sensor it actually was.

 

 

 

Edit:  Is it a VR sensor?

[Cowboy]

It is a VR sensor, you'll need to hook it up to digital pin 2 or 3, and then count the pulses with an interrupt.

[Me78569]

Thanks. 

[Me78569]

Well I have finally gotten some more time to work on this.  however sadly I have forgotten almost everything I was working on.   I never finished the speed sensor section of the code so I can looking into that more.

 

 

Cowboy,

 

Have you had a chance to do anything on your project that I can steal

 

 

 

 

Anyways I hope to have the speed sensor working over the next couple days.

[Cowboy]

Try this.

//Globally

volatile int TurboRPMPulses = 0;
volatile unsigned long TurboRPMTimeLast = 0;
unsigned long TurboRPMTimeStart = 0;
int TurboRPMUpdateLast = 0;
long TurboRPM = 0;
const byte TurboRPMPin = 2; //it can be either 2 or 3 on arduino


// in Void Setup 
void RPMSetup(){
   pinMode(TurboeRPMPin,INPUT);
   attachInterrupt(TurboRPMPin, TurboRPMInterrupt, RISING);
 }
 
 void RPMInterrupt(){
   TurboRPMTimeLast = micros(); 
   ++TurboRPMPulses; 
 }
 // in void loop
int ReadRPM(){
  if (RPMPulses >= 10 && (RPMTimeLast - RPMTimeStart) >= 100000){
 
noInterrupts();
  TurboRPM = ((60000000UL * TurboRPMPulses)/(TurboRPMTimeLast - TurboRPMTimeStart));
TurboRPMPulses = 0;
TurboRPMTimeStart = TurboRPMTimeLast; 
interrupts();
TurboRPMUpdateLast = millis();
}  
else if ((millis() - RPMUpdateLast) > 1000) {//if the turbo stops spinning, set it to '0'
TurboRPM = 0;
   }
  }

[Me78569]

should it be a input or input_pullup?

[Cowboy]

It depends on your external circuitry.  Here's a good read about VR sensors - http://en.wikipedia.org/wiki/Variable_reluctance_sensor.

 

I would recommend some sort of protection via a comparator to protect the micro controller.

 

The guy on CF mentions needing a pull-up resistor, but I'm not sure as to why that is.

[Me78569]

I am assuming that the Voltage of the vr sensor when the turbo is spinning at 100k is going to be pretty high, or at least high compared to what the Arduino can handle, correct?

[Cowboy]

It's lower then I expected, but the negative voltage isn't a good thing.  If it were me I'd use a lm393 and a couple resistors as it's a heck of a lot cheaper then a specialized VR chip.

[Me78569]

Yea thinking the same thing after doing some reading.

[spoonm08]

Has anyone tried controlling a PWM controlled actuator like on the He341ve using this setup? Maybe incorporating the PWM sheild and changing/adding some code?