ToyOBD1 basic Data Logging for Pre OBD2 Toyota's

[stanneh]

I finally have hardware finished up, about 10 mins after my last post I dropped the oled screen and cracked it just as I was ready to solder it in. I got some new ones in the mail yesterday and I have finally got hardware and it's so pretty




Now that I have hardware that isn't just a few chips with wires dangling from each other and I have software running on them it's finally time to start interfacing with the car again

[stanneh]

Update, I haven't been able to go play with the device on the car as the weather sucks.

I wanted to demonstrate how quickly the transmitter sends data to the receiver and is displayed on screen so I put together the following quick video. it's basically real time or within a millisecond or so.

[jimi]

Looking good.
Followed your links and did some reading, looks like the MK1 system predates this system. The MK1 doesn't have VF1 or TE2 pins on the diagnostic connector or the ECU.

[stanneh]

Looking good.
Followed your links and did some reading, looks like the MK1 system predates this system. The MK1 doesn't have VF1 or TE2 pins on the diagnostic connector or the ECU.

Thank you, I won't lie its been a long couple of weeks I didn't want to have to put so much time and effort in but plans change I don't wanna deliver something half assed. once I am once again reading the actual data It will be the last milestone and I will create a fresh thread with detailed step by steps and I'll upload some demonstration vids to YT.

I need a boot logo do you have an MR2oc.co.uk icon?

[stanneh]

I haven't had time to think about what other makes and models may benefit from this data.

I will say this though the calculations applied to the readings in this code are the same calculations used when reading direct from each sensor on my car in realtime.

I would hazard a guess there would be minimal difference in the calculations if any at all for the Mk1 values and it would be easy to check.

I just did a quick google of the AW11 Diagnostic port and it looks like it has the IG- wire its the one off to the side if the port I have code you can use that will give you your rpms from that output really easily if you have an arduino.

[jimi]

Also came across this series of articles about Toyota engine data (which you probably have already seen) https://www.toyotaguru.us/engine-contro ... -data.html
We don't have an icon, just a logo

logo.png (22.09 KiB) Viewed 46 times

[stanneh]

Also came across this series of articles about Toyota engine data (which you probably have already seen) https://www.toyotaguru.us/engine-contro ... -data.html
We don't have an icon, just a logo
logo.png

I have never seen this page before to my knowledge that's a real Gem!

Notice at the bottom there is a note:

For 1989 and later models which do not support serial data streams, the Vehicle Break-out Box gives you the ability to create one. By connecting the V-BoB in series with the ECM, information from every wire can be serialized and displayed by the Diagnostic Tester. Although it takes a little bit longer to install the V-BoB, the unlimited amount of high speed data makes the effort well worth the time invested.

This is exactly what I have been doing with the real time data

[jimi]

The links at the bottom of the page to related articles are interesting.
I saw the note at the bottom, 1989 was the last year MK1's were produced, that said the video I posted a link to is of the V-BOB & Intelligent Tester connected to a 19887/8 MK1, there's a shot of the breakout box in it.

This video may be of interest, shows the Toyota testing system for the MK1 ECU https://www.mr2oc.co.uk/download-cats/d ... 001-1.html, there's also a thread about it, which I'll find shortly
https://www.mr2oc.co.uk/forum/40/146044 ... ve_MR2_Mk1

Also found this https://www.facebook.com/groups/1505898572959292/

[stanneh]

The links at the bottom of the page to related articles are interesting.
I saw the note at the bottom, 1989 was the last year MK1's were produced, that said the video I posted a link to is of the V-BOB & Intelligent Tester connected to a 19887/8 MK1, there's a shot of the breakout box in it.

This video may be of interest, shows the Toyota testing system for the MK1 ECU https://www.mr2oc.co.uk/download-cats/d ... 001-1.html, there's also a thread about it, which I'll find shortly
https://www.mr2oc.co.uk/forum/40/146044 ... ve_MR2_Mk1

Also found this https://www.facebook.com/groups/1505898572959292/

I will take a look through all of those links at the bottom tonight it looks to be an excellent resource thank you.

I can't access the facebook link without an account and I am that weirdo with no social media.

I just took the the turbo for an MOT I'm not expecting her to just fly through she is 30 within the next few months but she is completely stock and everything functions just hoping for the best.

[stanneh]

I feel like this is all long overdue.

In the 80's and 90's this kind of tech was expensive and the resources of development for the electronics and the software would have been staggering.

we're now knocking on the door of 2022 and we have had devices that you can purchase (Arduino) for 10 years now for just a few pounds that can not only read the data but deliver it in a much more user friendly manner than the OEM setup.

now we have chips the size of our thumb nails with 33 Input/outputs, wifi/bluetooth, temp sensors, touch sensors all built in that are obtainable for less than 5 bucks and the programming is as rudimentary as it gets.

I really want to remove the idea of all of this being witchcraft that is unobtainable to something anyone can purchase plug into a pc open up the arduino software and upload my code to and be done essentially.

[jimi]

I only have farcebook account to keep an eye on the OC group other than that I don't use it, no time for "social media" , forums/clubs are fine, the rest
Here's a couple of images from there




Also https://zf-scantools.com/index.php?rt=p ... vQ7hnqk_YQ
And https://jfbreton.blogspot.com/2019/03/t ... AfcKyrrHng

[stanneh]

I only have farcebook account to keep an eye on the OC group other than that I don't use it, no time for "social media" , forums/clubs are fine, the rest
Here's a couple of images from there




Also https://zf-scantools.com/index.php?rt=p ... vQ7hnqk_YQ
And https://jfbreton.blogspot.com/2019/03/t ... AfcKyrrHng

Your full of great links today, that zf scantools device I tried to zoom in, from the side image that looks likely to be running a very old Arduino nano with a bluetooth module.

I will never forgive that guy for hacking that MR2 dash up like that though.

I imagine the data rates over BT were shocking that's not modern BT technology and on top of that the arduino processing the data is so damned slow it must be missing 1 out of every 3 data packets at least.

If you check my youtube look at the early versions of this when running on arduino check out the display and how terrible the refresh rate is, then check my latest and that's processing data, saving it to SD displaying it on screen and transmitting it wirelessly.

[stanneh]

I wonder if your ecu has a VF that is not delivered to the Diag port.

[jimi]

The Check Connector has 5 wires connected on UK MK1
VF
T
+B
FP
E1