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Elgrand Android APP

Did a static test in driveway with my Lonelec BT Adapter. Need to wait till the boss is working on monday before I can try it during a drive.., but a quick connection
 
KKOK said:
I built an android app for my own E51 (a S1 2002 Highway Star on LPG) to allow me to read / reset fault codes without a JOBD reader or using my laptop, anyway the functionality has grown to be a full on e51 Elgrand diagnostic / health monitoring tool, It's turned out well enough that I think it could be useful to other members, so I'm happy to share it.

I should say up front that I'm not an Elgrand expert & relied on this forum for advice to develop the app. The E51 uses Nissan's own Consult-II protocol rather than generic OBD-II, so I logged and decoded / reverse engineered my own van's Consult-II signals (a bit of a pain to do & may contain misinterpretations of signals / data). There's a lot of knowledge on this forum that I don't have, and your input would make a real difference to finishing it properly & rolling out to the forum.

What it does
  • How: Downloads from Android Play Store, runs off your android headunit or phone / tablet. Connects to a (good) Elm327 or STN OBD dongle (I used a vLinker MC+), can also connect by VAG K line cable.
  • Fault codes: reads and clears codes from the engine, gearbox, ABS and airbag modules off your phone / headunit.
  • Cat monitoring: compares the rear lambda sensors with the front ones, and bank 1 with bank 2, and tracks the trend over weeks to attempt to flag the early signs of a failing cat.
  • Health checks: fuel trims (petrol and gas), all four lambda sensors, alternator and battery (including the voltage dip while cranking), coolant, gearbox temperature and warm idle. Each check gives a plain-English verdict and the figures behind it. For best output the app needs to run on every drive and data collects over time to show trends.
  • MPG: live, per trip and per tank, kept separately for petrol and LPG. It calibrates itself from data pushed by the van.
  • LPG gauge: tracks gas used and remaining, with a range estimate (no more resetting trip counter).
  • Trip log: every drive is logged with distance, fuel and cost.
  • Head-unit dashboard and Android Auto: a live view of the van with every reading shown. The head unit or phone connects by itself every drive.
  • Workshop: service and MOT reminders, a soft-tyre check using the ABS sensors, and active tests (these only run when the van is parked and idling).
  • Garage report: Health report & log outputs you can share and analyse away from the van.
What you need: an Android phone or head unit (Android 8 or newer), and a Bluetooth OBD dongle. The vLinker MC is the one that's been tested.

View attachment 122135

Looking for beta testers

So far it's only been tested on my S1 van. Before I share it with the forum properly, I'm after a handful of E51 owners to help iron out the creases. Petrol and LPG vans are both welcome. It would also help to hear from anyone who knows these vans well and can tell me when a verdict or a reading doesn't look right. There's a Report button in the app that bundles up everything I need.

Nothing leaves your phone unless you choose to share it. It's free, with no account and no adverts, and it's an independent project that I'm happy to share with the forum if useful.

If you're interested, PM me and I'll send you the test link - I think I'll limit it to a few initially to make sure others can connect / use as I do.

Cheers, Kev
Click to expand...
Kev

I've just joined these forums today. I have just bought an E51 and happen to run a small IT company, so this is right up my street. I've just ordered a vLinker MC off of Amazon.

I was starting to think about how to fix up the funky stuff in this elderly gadget trolley and your project got me thinking.

Yes, let's grab the data off the CAN bus via Bluetooth (had no idea they existed). Mine comes with a leisure battery so I can run up something like a Rasp Pi on board to store the data and either sort out an internets for the van (Starlink or similar) or store locally on board and dump data via wifi to my home server on return to the mothership.

I'm a fan of Home Assistant and the approach used in your app looks like a great fit for that. The beauty of doing it via HA is that HA has a phone app too and that allows you to encompass many apps. Basically you just need to get the data to HA and then you have access to all of the HA facilities.

Anyway, I'll look into all that stuff. Once the dongle has arrived I'll request access for testing

Nice work

Cheers
Jon
 
gerdesj said:
Kev

I've just joined these forums today. I have just bought an E51 and happen to run a small IT company, so this is right up my street. I've just ordered a vLinker MC off of Amazon.

I was starting to think about how to fix up the funky stuff in this elderly gadget trolley and your project got me thinking.

Yes, let's grab the data off the CAN bus via Bluetooth (had no idea they existed). Mine comes with a leisure battery so I can run up something like a Rasp Pi on board to store the data and either sort out an internets for the van (Starlink or similar) or store locally on board and dump data via wifi to my home server on return to the mothership.

I'm a fan of Home Assistant and the approach used in your app looks like a great fit for that. The beauty of doing it via HA is that HA has a phone app too and that allows you to encompass many apps. Basically you just need to get the data to HA and then you have access to all of the HA facilities.

Anyway, I'll look into all that stuff. Once the dongle has arrived I'll request access for testing

Nice work

Cheers
Jon
Click to expand...
Hello and welcome
 
gerdesj said:
Kev

I've just joined these forums today. I have just bought an E51 and happen to run a small IT company, so this is right up my street. I've just ordered a vLinker MC off of Amazon.

I was starting to think about how to fix up the funky stuff in this elderly gadget trolley and your project got me thinking.

Yes, let's grab the data off the CAN bus via Bluetooth (had no idea they existed). Mine comes with a leisure battery so I can run up something like a Rasp Pi on board to store the data and either sort out an internets for the van (Starlink or similar) or store locally on board and dump data via wifi to my home server on return to the mothership.

I'm a fan of Home Assistant and the approach used in your app looks like a great fit for that. The beauty of doing it via HA is that HA has a phone app too and that allows you to encompass many apps. Basically you just need to get the data to HA and then you have access to all of the HA facilities.

Anyway, I'll look into all that stuff. Once the dongle has arrived I'll request access for testing

Nice work

Cheers
Jon
Click to expand...
Morning Jon

It'd be great to get you testing, the vLinker should open up full app functionality for you. Let me know when the dongle lands & I'll get you access as a tester on Play Store - I need your Google email to register you if you can DM me?
 
Elgrand Tool 1.0-RC1 · build 46 is on Google Play today!

Thank you to everyone who sent logs. Most of these changes came from them.👍
  • Head units connect by themselves when the app comes on screen, so your phone no longer needs to be paired.
  • Reconnects by itself after the screen blanks while cranking engine
  • Fixes issues when the Bluetooth link drops
  • Dongles that can't talk to an Elgrand are named in Setup
  • New Dongle check (Workshop → Tools) tests your adapter
  • ELM clone dongles now also read the gearbox and ABS
  • Smoother dials on slower dongles
  • One lambda/catalyst verdict on every screen
  • Currency setting; fuel prices in pence or cents
  • Clearer battery wording
The full details are in the changelog in the NotebookLM. https://notebook.google.com/notebook/e4bc146a-fda4-4097-a8b6-2b42e8e5891f

If something's not right, go to Workshop > Report.
 
Dongle Testing results to date:1790530482781-7c9b8561-9377-4995-9569-b8e2960d1f4b_1.jpg
 
Does the app have regional restrictions as it's not showing on French Google.
 
LeStempy said:
Does the app have regional restrictions as it's not showing on French Google.
Click to expand...
Hi. No, it's on Play Store but as a Test App - I need your google email DM'd to add you to a testers list - then you get a link, click on that and it opens up in Google Play (Joe Public can't see it until it's debugged by us and released proper). Ta
 
KKOK said:
Hi. No, it's on Play Store but as a Test App - I need your google email DM'd to add you to a testers list - then you get a link, click on that and it opens up in Google Play (Joe Public can't see it until it's debugged by us and released proper). Ta
Click to expand...
Ok no probs, I just side loaded the updated apk you sent so all good.
 
Yes. It went up this afternoon, your app should auto update every time a new app is released 👍
 
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