Digital Dash Project based on STM32 MCU and TOUCHGFX

[opelpanfan]

Hi everyone

After some discussions with rusefi team, I'm making this post about my digital dashboard project.

From the beginning:

Aftermarket Digital Dashboards are very expensive and in general limited to high-end manufacturers. In the past, I used AIM MXS STRADA 5-inch dash and ECU master ADU 5-inch units. Found them pretty good but very expensive for the hardware used inside. About 2 years ago started tinkling about with STM32F469NI 4.3inch Evaluation board with Touch GFX interface and found it pretty powerful and easy to use.

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After finding that the evaluation board has only CAN 2 available and did not really like to transmit CAN frames started designing my own PCB.
After many unsuccessful trials found a couple of displays on Aliexpress that worked with my PCB design.

The current project status is that I have 3 working prototypes with different screen sizes.

PART 1

1. This 6.86inch with a 480x1280 high-resolution IPS screen and Parallel RGB interface

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You can get one here for about 50$:

https://www.aliexpress.com/item/1005004740847099.html?spm=a2g0o.cart.0.0.2a2438dapnRlM9&mp=1
Spec sheets:

SRG0686A.pdf

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Screen dimensions:

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Controller PCB:

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Spec:
STM32f429II
SDRAM W9825G6KH-6I
2 CANBUS
GPS ATGM336H-5N31
ESP32-S3
SDCARD
4 user buttons
W2812 RGB LED connector

PCB plugs into the screen through ribbon cable 40p 24bit RGB interface + I2C Touch interface

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Loaded FW on screen

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PCD Schematic:

SCH_6.86 DASH SCH_2023-02-28.pdf

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GitHub repo for Firmware and Hardware:

https://github.com/opelpanfan/car-dash-wide

[AndreyB]

I'll upload it to GitHub in next couple of days and post details about other two screen sizes and responding PCB's

I am very very interested to touch this stuff! Maybe I can help with fabrication and case

[MoeAlpha]

Amazing ! Would make a 3D printed case for this !!!

[AndreyB]

STM32f429II

Well, here's a funny reality - LQFP-208 is way more accessible and WAY CHEAPER at the moment?! Would be funny if we would have to come up with a combined 176 AND 208 footprint to have options

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[AndreyB]

https://www.google.com/search?q=6.86%22+dash LOL.

[AndreyB]

Now leveraging interactive pinout!

https://opelpanfan.github.io/car-dash-wide/pinout/

[AndreyB]

Trying to help...

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[Neobob22]

Hi, just discovered the thread thanks to Andre, that look pretty an awesome way to build a user interface through CANbus !!

I've played a bit with touchgfx and that can match my goals with my low programmer skills (but able to manage with pictures then lay objects according), what about the "boot" speed etc, is that near a duino ? no shutdown procedure required ?

as a car integration, I was looking on https://www.st.com/en/partner-products-and-services/riverdi-stm32-displays.html for brightness and power supply integration, but this one is still pretty big for my goal (above the head unit in a miata, about 180mm x 69mm high visible, a little margin above and on the side), the 6.86" you mentionned can fit with a huge active area but not especially bright, damn !

in for following, and will be happy to share what I've found, if we can just fit any screen through I2C interface also ?

edit : pic for illustration, instead of the 3 round gauges :

[Omen234]

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Hi

[Omen234]

HI

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[Omen234]

can be useful to anyone

Korpus_DASCH_6.89.zip

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[AndreyB]

https://github.com/opelpanfan/car-dash-wide

this is now 404 for me, is this still available anywhere?

[Dron_Gus]

this is now 404 for me, is this still available anywhere?

https://github.com/rusefi/car-dash-wide lol

[Omen234]

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[Omen234]

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[Omen234]

I can't upload the video.

[AndreyB]

I can't upload the video.

Please use youtube

[Omen234]

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[Omen234]

I removed these resistors and everything worked. I turned on the lift to 5 volts and connected the oil pressure sensor. The rest are free.

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[Omen234]

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[Omen234]

I really liked the idea of multiplexers, but they could not be applied to my projects, so I simplified the scheme a little and transferred it to kicad

[Omen234]

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[Omen234]

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[Omen234]

I am currently working on the case

[Omen234]

I'll share it when it's ready

[Omen234]

I took a ride with the panel on an airboat

[Omen234]

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[Omen234]

as for the firmware, since I am not far from "hello world ", therefore, I only threw in the GPS parser and made the screen for myself