ok So

Lets focus Matrix Changes  ,
I have not change anything yet on matrix  main board i try summary here

What are final changes you suggest for matrix power?

also should i add a input screw terminal
for 13/14volts from a alternator onto matrix.

===================================
Earls Last Suggested Changes not done yet
What we need to do is connect the 4 left side power lines to 4 right side power lines on VIC Matrix board.

The way Stanley’s power board is built right side is always on unless fuse blows.  Then you can turn left side on with switch.  I built my copy of board with 2 switches that turn the +12 in lines on/off and did not use fuse. Switches connect to power board.

As all you need to do is switch +12v inputs to board switches could be on VIC Matrix instead of power board.
It looks like if you move current +12v input up then traces would be easy to add on right side like traces on bottom.

NOTE:  The 11/12 is not in the proper format for use on the VIC board.  Not sure where it or if it used but it could be used to signal that tank is over pressure to another system.
It would sure have been nice to to have some documentation that state clearly the purpose of each signal.  For example I can speculate that [11/12] is the correct GASFB signal and that the 10V offset does no matter as [K] killed the digital signal and Stan added this interface to keep the analog signal on cell to maintain the conditioning of water.  What I do plan to do is turn off the DC offset of scope and take a closer look at [11/12] is see if the analog signal is present.

I post the [k] and [11/12] transition photo's later do not have them on computer yet.
 They will also be in test report I am writing as I go along.

Dan

if ok correction please advise on matrix and i will make all changes same time as it is  hard to follow
as we re learn over and over
  i   most already noted here now

I will post BOM for face panels for parts switches

Top photo:
I had assumed only one side of power board was active.  Having new traces in place would then always provide a path to rest of boards just by switching active side. (no jumpers needed).  The would also work if both sides are active and your are using both sides of the load to spread load and failure of one regulator would not remove power.

If concern is a failure taking taking out the regulators (my assumption) then if both sides are active and new traces in place then that failure could take out both sides.  With switch and fuse in series both still would be protected by fuse.

With current Matrix configuration, with out jumpers or switches on line between terminal screws only, one bottom side would be providing power to Matrix boards on the bottom Matrix.  While the top would be active it would not be connected to a load.   A short for example would only damage the bottom load and then top half could be connected with jumpers or switch between terminals.

Both configurations will work, which one you choose is based on design goals.  If load balancing is primary concern you add traces.  If failure protection is major concern you leave them out. Another case is top half was meant to power some devices hooked to terminal screws then you would also leave them out.

As I am working in lab any of the configurations work for me.  Which configuration you choose depends on what is your primary concern for conditions where board is being used.

Middle Photo -  Leave it out  (below discussing is why I recommend putting it in but changed my mind and why)

The current Matrix board configuration provides Regulated +12v power to power  Matrix boards and to power board.  In this case using a new power card the board would only need to provide +10V and +5V using voltage regulators - Discussion on having 2 side discussed above still applies.  So you have +12 into board, and +10 and +5 out.

Stanley's power board will not work in this configuration as the blocking diode on his power board blocks the +12 input.  To get around this we provide power to Stanley's board on Pin's 1 and 9, this needs to be unregulated power (at least at a higher voltage which is also needed by 7812 on Matrix board).  This comes from the 15 Amp Fuse on Matrix board in both cases.  (So you do not need a separate alternator source as neither will work with out the higher voltage).

Why the switch?  The system will function without switch but when using Stanley's power card you will having active +12 power from 2 separate sources as turning off power on Stanley's board would not kill the 12v feed to other boards only the +10 and +5 feeds.  Again this is only needed when using Stanley's power card.   If you are using another up stream switch to kill power to the 15 Amp fuse then switch does not matter.

I think leaving out is best answer and using up upstream switch to kill all power, as any switch on other power cards would have the same issue as Stanley's card as they also would not kill the +12 feed.  I am doing that now in my test system - I use the switch on power supply and kill everything as it is in reach.

Bottom photo

We must make this change.  Signal on this line is not the right one.

I know first answer is kind of vague.  Select they one that best fits your primary goal.  Designer always have this issue when they have conflicting requirements.

At this point this is what I would do.

Leave the traces in top photo off.  You can solve this easily later with jumpers on screw terminal pins or even switches on a panel that go between terminal pins.  This lets you configure system to meet your primary concern.

Put in traces from 15 Amp fuse to pins 1 and 9 so Stanley's power can be used if desired

Leave switch off in middle photo

Remove trace in bottom photo

like the failure route as it is to make sure you can always get moving making gas again if  something fails.

With current Matrix configuration, with out jumpers or switches on line between terminal screws only, one bottom side would be providing power to Matrix boards on the bottom Matrix.

  While the top would be active it would not be connected to a load. 
 A short for example would only damage the bottom load and then top half could be connected with jumpers or switch between terminals.

Summary of what I am changing on Matrix 
Put in traces from 15 Amp fuse to pins 1 and 9 so Stanley's power can be used if desired

remove trace to db 37

if anything i missed let me know

we choose for redundancy way so we have 2 to 3 ways
to keep things running if we short at anytime

Dan

Looks good.

As I now have a working version of Stan's power card other than mounting LEDs and switches on front a panel (will do that) I am returning to work on upper half of Gas Feedback card.   In a word document, I have written the Gas Feedback card description including Inputs and Outputs and information on how lower half operate. It also discusses the testing I have done so far.  Do what me to post this draft?

 ok I am making edits to gerber
Dan

Bom for Face panels

OMEGA Engineering, INC (Top of WFC Pressure Transducer P/N PX176-050A5V)
One Omega Drive
http://www.omega.com
P.O. Box 4047
Stamford, Connecticut 06907-0047
800-622-2378
http://www.omega.com/pptst/PX176.html
P/N  PX176-050A5V    0-50 PSIA pressure transducer with 36" cable
(FROM: ESTATE PHOTO: WFC/_ICT0014.JPG)

the  sequential vic board trigger switches

Tps Digital Accelerator Card Connect to K11 Replaces K7 stans Optic sensor version with industry standard tps
sensor from pedal or throttle body

Dan

Gas Feed Back

Gerber updated
with latest changes, please review if  i got it right

Daniel

Matrix Updated
Corrections Completed power rails and trace removed
Gerber attached
Dan

Auto start Auto Fill Bom

Vic Sequential Triggered Power Switch

BOM

Dan,

Question on Matrix changes.  The line to second side of Stanley's power card pin 9 was left off.  Not sure if this was intentional as it can be provided by connecting two terminals with jumper/switch.  Again only needed for Stanley's power card.  Rest looks good.

Couple of changes on Gas card ( I was not clear on one as this line needed to be move also and I connected 4046 to 10V instead of 12V in second) Changes will fix both.

I have made all the these modifications to gas feedback card.  In process of checking them.  The 4047 came yesterday so I not have all the parts.  I did find I landed one of the 10 volt power lines on ground and I am sorting out if I damaged anything.  Having the need Gerber file will help with that.

ok noted making corrections Dan

Dan.

The  two  Press Limit1K  resistors I had you change to 4.7k to match schematic should be change back to 1K (another case where board was changed to make it work better)

 I did a quick test with 1K resistor in bread board to see the difference as I have the 4.7K one on board.

With 4.7k resistors pot working range is 5.40 to 6.20 Volts
with 1K resistor pot working range is 4.81 to 7.25 Volts

So while both work the pressure range is to narrow with the 4.7K resistor   Note: Working range is 5-10 volts with 5-volts  being max pressure.

Either is not a big issue for my testing.  I based this on 0-6 Volt range of pressure transducer.   Turns out output of first A37 is inverse of input voltage and operating range is 10 to 5 volts.   

HI Earl Thanks you , just to double this is in regards to Gas Feed Back Card?
Can you circle change as many changes hard to remember all and want to be sure  Dan
With 4.7k resistors pot working range is 5.40 to 6.20 Volts
with 1K resistor pot working range is 4.81 to 7.25 Volts

Ok one below led in picture

Dan,

Did next step in testing today.  Started looking at the top half of board and found I have told you wrong about wiring of pins 2 and 3.  I think with this chip facing right instead of left cause me to get them backwards so changes I had you make were wrong.   Even soldered one of the wires wrong again while trying to fix it today.   I will post correct wiring in picture below.

Have not moved on to 4046 as I have spent several hours checking 741 chips as LED on K output was not switching.  741s all checked Ok and board was working then when I was testing today it started acting up again.  Turned out to be a bad solder join on a resister only looked for it as state changed when I slid board on piece of foam I had laid on.  Oh well I have a better understanding of 741 after all the testing.

Quick testing results output A34 tracks the voltage direction of change of the Voltage Output transducer.  This voltage level goes to 4046 on pin 9 where it be turned into a frequency by the VCO function of the 4046.  Frequency will track voltage level.  Will be testing this next to verify.   Will post details later in document I am writing which describes card function and also has test results. 

ok noted working on it

just a note for in outs
version1 Gas Feed back

Re tps here is Bom
Gerb is posted  previous

I worked on 4046 today.  One thing that bothered me was Pin 11 (has 470-ohm resistor and 470 pot) but schematic has it connected to 0V crossed out and 12V written in so I checked data sheet for 4046 and it should go to ground and not +12v.  Fix below is to connect it to ground.  I did test this below.

I decided to test this chip on a bread board for a couple of reason.  I wanted to see range of inputs and output just using the wiring below which is way I think is should be hooked up.  This is easy to do as there is just one active input besides the resistor pot and one output on pin 4.  I wanted to test all the changes we make including the pin 11 changes to make sure everything works and it does.   I will double check all the below again Gerber file.

Pin 16 - (12v or 10v) both work as I tested both.  Only real change is voltage level of output signal 12v = 12v and 10v=10v
Pin 12- 100k to GND
Pin 11- 470 to 470 Pot to GND
Pin 9 - Voltage in from A34  (doing testing I found it must be at least 5.1V to get signal out)
Pin 8 - GND
Pin 7 - to 0.1uF Cap +
Pin 6 - to 0.1uF Cap -
Pin 5 - to GND
Pin 4 - Frequency output to Pin 1 of 4001 ( With pot set to zero ohms 5V in gives 1hz out and increasing to 12 volts give 50hz out)

So I now know operation range of 4046 both in and out.  But I did one more test with 500-ohm pot (do not have a 470 one).  Using it I found I could change frequency range from 1hz to 100khz.  So frequency can be set to match what gage needs using this pot.

So I now know what range to set pots to give correct voltage out of A34 into 4046. 

I did put 4046 back into board but did not get an output.  I need to go back and check all the patches I made to this chip on the board as likely I have something wrong.  I can also bypass it if I have to by using my bread board version with jumpers from input 9 and out pin 4 on the board which will allow me to finish testing.

This whole board is an exercise in getting all the levels correctly set for the next step.

Sorry about the incremental changes.

 I will also add this to document I am creating to describe board operation.