Problem found.
it turns out to be the photo resistor. When I cover up this sensor it is being programmed in one try every time.
It doesn't like the bypass I made, so I interrupted the trace to GPIO2 and all is OK now.

 

test message .... I can't get to page 8

 

Your skills never cease to amaze.
Especially to me as I have no knowledge of totally mystifying electronics.

Well done Bob, your perseverance in fault finding is a credit to you.

 

+1
Same here. I know that if you let all the smoke out, they generally stop working, but that's pretty much the extent of my knowledge.

+1

 

Is anyone able to check/confirm about the 5.0 OBD Module to ensure that it is compatible? OR perhaps tell me how to check? :-)

Thanks again for all of the awesome work!

 

I'll tell you when I get mine, tbh, even if it doesnt work its (IMO) a risk worth taking for the work that CB's put in...and remember....

IF YOUR NOT ON THE LIST YOU AIN'T COMING IN!

 

luckily, I signed up early and reserved my spot

 

Of course I will be aiming for functioning devices.

So what do we have so far: See picture and video below.
Things that are still to be delivered are the USB cables, cigar lighter chargers and 3D prints.
Probably the shipping might take place sooner than earlier suggested.

Video:
startup screen of the device. This is my prototype, other 3D prints will look better.



Image:
14x soldered devices.

 

Recently I was working on a manual,
you can download it here.
There's also some news in there about the 5.0 models (retrieving additional data from the OBD port).
Add a note here if some things are not clear.

Today the 3D prints are due to be delivered ...

 

You're a jaguarforums.com Rock Star, Cabrio Bob. May I suggest you be made an honorary member. With merit, at least, a member with distinction for your contribution, innovation, and unselfishly sharing your work.

 

That's not up to me, is it?

By the way, I changed the pdf already, removed the info about not needing the PTC poly fuse. It may not be neccesary, but doesn't harm either.
Since the examples in this pdf has an updated PCB, the ones I'm sending out will have a PTC like this one integrated (so not the RUSBF075)

 

Got this in the mail today:

 

pretty cool !

 

I took a closer look at the 3D prints,
turns out the lids of the enclosures are not printed up to my standards.
I contacted them, and they will re-print the lids (in a different orientation).
This will add 1 week to the project ...

Picture of some disapproved lids:

 

keep them as spares (if they'll let you) as am sure that sanding, a few coats of primer and a topcoat and you'll not notice the imperfections.

 

Thanks for the update Bob.

 

Yes I can keep them,
and they will be sent to everyone as a spare.

 

DGL your post sneaked through without a reply from me.

- Yes it will auto connect every time you get in the car (when you start your car)
- The display will show only one item, and the button press will show the next item.
- The button also has a 2nd function, a long press (>0.5 sec.) will bring it back to the coolant temperature display (or programmed to your preference ... by yourself).
- 5.0 models will have extended data readout. Someone has to check if this works because I don't own one.
- It is recommended to disconnect the ELM327 from your car if you're not going to drive it for a while.

P.s. I'm setting up a website for the "Jaguar X150 Ashtray OBD2 Display": click me
In the future it will contain firmware updates, a manual (already available), and (links to) downloads needed to create one by yourself.

 

I found this picture on XDA:
in Torque you can check the OBD protocol.

 

What a fantastic thread. To actually see a project from the idea stage through to completed product on a members forum is teriffic. Posters like Cabrio Bob are what make this place such a great resourse.