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ArcticDave

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When it arrives I can connect it to my air hose and read signal voltage for different pressures to give you you more data points if needed. 

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That would help.   Just like 10lb  20lb and  50lb would be good. 

Wicked Wanda the WONDER Wife got your ThermoCouple mailed today. 

There is a Window Decal in there too so don't be chucking it out. 

Edited by homefire
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All sensors are going to be two conductor.  Excepton of The Oil sensor requires three wires.  The Black wire can just be tied to the Shield as it will be grounded any ways.  The two shielded wires will be Signal and +5 Volts.  

 

**  · Wiring: Red for +5V. Black for ground. Blue for signal output.

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Okie dokie. I have a stud right there where the sender goes. I can ground it right there. 

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Ok,  Junction Box is Sorted Out.  Sorta LOL 

That GND for the Oil Sensor can provide the GRD all GRD Needed by me at that end.  Just pig tail the third wire I hand you at the end of Oil Sensor Wires.  It's going to be tied to That  Shield Wire.

This will provide the GND we need for ALL Shields, Tach and that Oil Sensor.  

I can tie the GRD at the other end (Brain and Display)  providing Double Terminated GND for All. 

 

This is the Junction Box  in the works.

 

 

Nano Brake Out 3.JPG

Edited by homefire
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Your envelope made it today, and good news...it will fit just fine at my proposed location. I even have a tap that fits. It's just a regular 6mm x 1.0 mm thread pitch. :thumbsupanim

Edited by ArcticDave
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Good Stuff.  Let me know if we need to adjust the Harness any. 

Still Racking the Noggen on the Program stuff.  Got tired of that so attacked the  Brain End for a while.

Using the EFIS program I just need to insure I use the same pins on the LCD and Encoder.  The Sensors are all up to me.  Eaaaaaa:2mo5pow:

 

 

Arduino Pins in Use.jpg

 

EFIS19264_Schematic Used for MAX.png

Edited by homefire
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One Step closer.  Only took me three hours to figure out what pins I could and could not use.  Am I special or WHAT ? 

 

 

Arduino - Sensor Pins.rtf

Arduino Pins in Use.jpg

arduino-mega-pinout-diagram.png

Edited by homefire
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Yep, all going on a Nice little flash drive .   Did you Find the Decal with the Thermo?  Being like five years old it may be dried out.  

You may need all this documentation to do Inflight Repairs at 6,000ft !  I'll keep it simple.  LOL  :evil1:

 

Edited by homefire
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One More Step to Progress.   Only Two Hours of my life never to be seen again.  It would seem my basic math skills have retired early.

Broke the Code on your Oil Sensor.  With the reading they supplied I figured out what we needed to know.

Information they provided :     Output: 0.5V – 4.5V linear voltage output. 0 psi outputs 0.5V, 75 psi outputs 2.5V, 150 psi outputs 4.5V.
Information I figured out  LOL :     .0266 V per PSI


 Read Oil Sensor
PSI == Oil read --.5  /  .0266

*0.5V...                           0 psi
0.75V                             9 psi              PSI == ( 0.75 - .5)  / .0266 =    9.390
1.5V                             56 psi              PSI == ( 1.50  - .5) / .0266 =    56.390                    
*2.5V                           75 psi              PSI == ( 2.50  - .5)  / .0266  =   75.187                                                    
 3.5V                          112 psi              PSI == (3.50  - .5)  / .0266  =   112.781
 4.0V                          131 psi              PSI == (4.00  - .5)  / .0266 =  131.578
*4.5V                         150 psi              PS I== (4.50  - .5)  / .0266 =  150.375

 

Now ?  What Range did you need ?
                    

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3v and under It looks like. Most of them seem to run in 45-65 psi range. 0-100 psi would cover all possibilities. 

My oil sender will be here tomorrow I think. I can hook it up and verify the numbers for you. 

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I think I can just get it to Display the Actual Numbers    .5V and above.  You should have the full range.  I'm thinking like the TACH i'm going to have to do some Averaging  a few samples to stop it from throwing numbers all over the place at you.

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Thats a good idea. It will be much easier to read and we just don't need millisecond accuracy. 

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Homefire,

Oil pressure sender arrived today. I'm digging though my old chargers and usb stuff looking for a sacrificial lamb to provide the 5v. As soon as I get solid numbers, I will compare them to yours and let you know.

1508283957641-370222873.jpg

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Good Stuff .    I forgot how the Arduino uses the Analog to Digital Converter.     It divides the 5v by 1024 and those are the numbers I will need to work with. 

So, I had to Convert the Numbers from Sensor so we would know what means what to what the Arduino would know what means what and then back to something You would know what means what !   LOL Follow me here son!!! 

Arduino ADC sees 5V as :
5V / 1024 =  0.0048828125 increments.
1024 / 5 = 204.8   = 1V
0.0266 Volt = 1 PSI from Sensor
 Arduino = 204.8 *  0.0266 =  5.459
Arduino sees  1.0 PSI as   5.459
0.5 volts is an analog reading of 102  (rounded) for 0 PSI
4.5 volts is an analog reading of 921  (rounded) for 175 PSI
Pressure (PSI) = ( Analog Reading - 102 ) * 175 /  ( 921 - 102 )
75 PSI * 5.459 * 0.0048828125 + 0.5 =  2.49914550781
***  USE THIS     ""Pressure (PSI) = ( Analog Reading - 102) * 5.459  ""


 ???    Do you smell Smoke   ???

 

I was thinking I could just use that guys EFIS program to print all this stuff out.  Well as it turns out I can but I have adjust where it's printing everything.   MAN am I struggling figuring that one out.  I can't keep track of what I see on one sketch and need to change on the working sketch any more in my head.  I need to get to the library and get copies of all this chit so I can spread it all over a flat surface and follow a train of thought. 

Dang, There's that Smoke again.

Edited by homefire

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LOL, You dragged no one that I know of.  This was my Idea !  Remember ?   We'll get there.  Just a learning curve, eaa?

Quote

 

 

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This whole project has been a long strange trip :hiker: and a lot more to learn still. :reading:

 

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It would seem our MAX6675's  came through Deming today.  LOL

 

Date/Time
Activity   Location
 
10/19/2017 - Thursday
2:40 pm In transit   BIG SPRING, TX
   
12:37 am In transit   SAN SIMON, AZ
   
 
10/18/2017 - Wednesday
6:20 am Departed FedEx location   FEDEX SMARTPOST LOS ANGELES, CA
   
 
10/17/2017 - Tuesday
11:25 pm Arrived at FedEx location   FEDEX SMARTPOST LOS ANGELES, CA
   
 
10/08/2017 - Sunday
7:41 pm Shipment information sent to FedEx    
   
Select time zone
 
 
Shipment Facts
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Tracking Number 9274899991206454812681
Reference YT1728221549001067
Dimensions 6x6x6 in.
Terms Shipper
Service FedEx SmartPost
Weight 0.2 lbs / 0.09 kgs
Total pieces 1
Packaging Package
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2 hours ago, ArcticDave said:

At least it didn't overshoot all the way to NY this time! :ROFL:

Yea, not the first time that's happened.    

  Good News and Bad.

Good News.  It rained like Ell north of us last night we need the water in the Aquifer.

Bad News.  Wicked Wanda the Wonder Wife couldn't get to work last night because of it.

Roads impassable .

Good News.   Sense the Roads are messed up I may get one of my projects done today.

Bad News.    USPS Tracking says I have a Package in the Mail Box and I really don't feel like walking through the puddles.

Good News.   Boiling some Pork Rigs and sure smell good.   Going on the grill for dinner here in a few minutes.

 

Ordered another Mega2560 for My Collection.  My excuse was it's a back up for yours.  :brows:       They have a 32bit I'm thinking of one of those SOME DAY things.

More Bits and Bobs for my collection and some larger Sleeving  .

Most this is for my detector build in the works. 

** Come to think about it some of that Expandable SLeeve would be good protection on Coil wires, eaa? 

Geekcreit® MEGA 2560 R3 ATmega2560-16AU MEGA2560 Development Board With USB Cable For Arduino    73020    US$10.22    1    US$10.22    10/20/2017 05:04:24    LS036420591CN
20mm Braided Expandable Auto Wire Cable Sleeving High Density Sheathing
Length: 2M POA135004    986169    US$1.70    1    US$1.70    10/20/2017 00:10:18    
12mm Braided Expandable Sheathing Auto Wire Cable Gland Sleeving
Length: 2M POA134996    935104    US$1.64    1    US$1.64    10/20/2017 00:10:18    
10pcs 1x40P 40Pin 2.54mm Straight Single Row Male Pin Header Strip
Color: White POA519347    989804    US$1.35    1    US$1.35    10/20/2017 03:52:38    
10pcs 1x40P 40Pin 2.54mm Straight Single Row Male Pin Header Strip
Color: Green POA519348    989804    US$1.35    1    US$1.35    10/20/2017 03:52:38    
       

Edited by homefire

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