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What is going on?

Started by Rudolph, October 06, 2025, 09:02:10 PM

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Rudolph

What's up?  :)
It has been three weeks again since the last post while there are 75+ daily visistors listed.

I implemented all of the BT822 patch functions, or at least these that are documented so far.
Actually testing these still is difficult since the new EAB has not been released.

I would like to buy a BT82x based display module, but the options are still very limited.

Today I received a ACD-110DHTT which is a 10.1" industrial touch monitor that I got used for only 23€ from EBay, 1280x800.
And of course I only took it apart, really nice build quality, the case is machined from a block of aluminium, I do not want to know how much these cost before they were phased out back in 2019.
The panel is a G101EVN01.0 from AUO for which I even found a datasheet, LVDS, single channel, 6 bits per color.

The touch is a separate unit and will provide more challenges, it uses an eGalax Touch controller.
On the outside the interface is USB, but it does support I2C as well.


Now, what is everyone else here up to?

Edit: I really have no idea why this site is practically dead, 144 views of this post and no reaction?
Ok, stay positive. :-)


I just spent some time to check the wiring of the ACD-110DHTT and adapt it the VM820C.
As it turned out, the wire harness of the display is using the exact same 6 pin / 2mm header for the backlight than the VM820C, I only had to swap two pins.  ;D
And for LVDS the wire harness connects to the conroller board with a 32 pin / 2mm header which uses the same crimps than the 30 pin / 2mm headers I have for the LVDS TX of the VM820C.
The pinout was slightly different, but taking out the pins from the old header and putting it in the 30pin header was really easy.

Next I put in a 1280x800 profile, checked the data format, which is JEIDA / Format 1 for 18-bit RGB, checked the clock frequency range and configured REG_LVDSTX_PLLCFG accordingly.
And, yeah, it worked on the first try.  :)
Even the backlight control is working, as the panel has the backlight controller integrated and takes a PWM signal to control it.

I do not have touch, did not even try to connect it, so far I have no idea if the eGalax touch controller is compatible to anything the BT820 supports.