Electronic VNT control DIY

[Hey]

I have a few questions on the part descriptions

MPXPAUL = ? actual part number

I know it is a motorola MPX series, and dual port but I can't figure out the pressure rating from the supplied part number.

also IC3 PIC16876P =

Again, it is a pic chip, but what is the actual part number?  
I know they come in PIC16F**** and PIC16C***

I can find these PIC16F876 or PIC16F876A but that is as close as I can get.

Thanks for your help and for sharing this.

Thanks for asking.. because I didn't know that there where some mistakes on the part list. It was regerated automatically by the software and I some of the names where changed by me or the software. I will make the corrections.

the correct part # are:

PIC 16F876 or 16F876A is ok.

MPX4250A (last version between 2.9psi and 36psi) (PAUL is my name!!)

[gigaz2]

nice classic design on the input comparator for the 3rd injector :wink:
there's room for a lot of improvement on the controller, but the basic is all there

[Hey]

feel free to improve it if you like!

[monomer]

How much we talking to write the IDI code? Would this programmer work: http://www.k9spud.com/jdm/ (the above mentioned links for programmers are either dead or outside the US.)







VERY interested. I'm picking up the parts this week.

[13ad13oy]

This is a really cool thread, Nice one for putting in all the work! 

May be interested in trying this for my AAZ 1749 Project, little daunted by building my own circuit boards tho! 

[monomer]

This is a really cool thread, Nice one for putting in all the work! 

May be interested in trying this for my AAZ 1749 Project, little daunted by building my own circuit boards tho! 

It's easy!


If I can do it, anyone can.





thankfully, my local electronics supply house carrys just about EVERYTHING needed.

[regcheeseman]

Excellent work, 

Could I possibly get the schematic file of the TD circuit? I use ARES and ISIS as my design package but have access to others.

I would like to modify the circuit slightly for different sampling and control with maybe a tacho driver as well.

I have access to a PIC devolopment system but have no experience of HEX code, can you give me an idea of how your program works? does it contain a simple map?

Thank you.

[monomer]

Getting everything together for this sometime this week.



Which PIC programmer is everyone using? - Need something easily attainable in the US; the rest of the parts are easily found.

[Hey]

You can buy a pic programmer from the internet. You can also buy one that can reprogramm eeprom... if you ever think playing with TDi ECU, and make your own chip.

You are going to build one for idi?? What variable resistor are you going to use for the throttle pedal??

[monomer]

You can buy a pic programmer from the internet. You can also buy one that can reprogramm eeprom... if you ever think playing with TDi ECU, and make your own chip.

You are going to build one for idi?? What variable resistor are you going to use for the throttle pedal??

It's tough finding a usable, cheap programmer - hopefully one with a usb port.

IDI with a GT2256VNT. Variable resister mounted on the top of the ip, as you described earlier. Giles is also a Bosch supplier if I remember correctly, so when I order my IP and injectors - he should be able to take care of that.


I'm going a little different route with the PCB. I'll print the transfers on some transfer paper and iron it on and then etch. I have plenty of regular copper-clad PCB blanks, and the prototyping board is a little pricey.



You have any pics of your vac. setup on the manifold?

[monomer]

Links for the PCB traces are down.


what type of file are they? I would recommend a different hosting site.

[winmutt]

I have an electronic injector on my IDI (off a Ford Mondeo TD), this controller would work just fine on my setup controlling a VNT right?

You mean electronic actuator? I am working on a project like this right now : http://superturbodiesel.com/std/garrett-vnt-hella-actuator-t-614.html

[macka]

Hey,

   on instructables there is a DIY for turning a laserjet printer into a PC board printer. It would save you the cost on caustic chemicals and all those wonderful smells associated with making your own boards.

http://www.instructables.com/id/5pcb/

[Les]

I am also interested in this controller. Have a stupid question: Where do you get vacuum from? From brakes vacuum pump?

Quote from: "gigaz2 "

you measure IQ, pedal position and ActualBoost and generate a PWM signal to get to DesiredBoost right?

What is IQ?

[starrd]

Yes vacuum to control the Turbo is from the vacuum pump mounted on the engine

IQ stands for "Injection quantity"