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Author Topic: 812 vs 813 display differences?  (Read 86 times)

Rishel

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812 vs 813 display differences?
« on: March 20, 2020, 04:31:08 PM »

I've been using the EVE 812 in a 5-inch display with resistive touch (NHD-5.0-800480FT-CTXL-T) and the display is just fine. I switched to a similar model with capacitive touch (NHD-5.0-800480FT-CTXL-CTP) and can't get a display. I haven't been paying much attention to the touch aspects but it looks as if the display registers in the 813 are the same, and take the same values, as the 812. Am I wrong about that?
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Rudolph

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Re: 812 vs 813 display differences?
« Reply #1 on: March 22, 2020, 10:40:34 PM »

Regarding the display, FT810, FT811, FT812 and FT813 are all the same, with FT810 and FT811 supporting only 6 bits per color.
Also the BT815 and BT816 can be used with the same code, the step from EVE2 to EVE3 is an expansion as opposed to the more severe changes from EVE1 to EVE2.
The touch engine in the FT811/FT813 works in compatibility mode after reset with single touch only.

And regarding the NHD-5.0 displays, I just opened the two datasheets.
The display parameters and electrical characteristics are identical.
And the schematics only differ in regards of the touch.

So yes, it should work to just swap the displays.
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