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Forum Index : Microcontroller and PC projects : ST7796 / GT911 support ? (Rpico)

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vincenthimpe
Regular Member

Joined: 14/10/2018
Location: United States
Posts: 71
Posted: 05:41pm 09 Nov 2023
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anyone managed to write some basic code to initialize and write to a display  based on ST7796 with a capacitive touch sensor using GT911. (52pi model ep-0172)
I got a nice board with a 480x240.

i'm building an irrigation controller. it would either be this display or a 2x40 character ...
 
lizby
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Joined: 17/05/2016
Location: United States
Posts: 3367
Posted: 08:45pm 09 Nov 2023
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You could use a 3.5" 480x320 SPI ILI9488--considerably better than a 2x40.

~
Edited 2023-11-10 06:46 by lizby
PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed
 
vincenthimpe
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Joined: 14/10/2018
Location: United States
Posts: 71
Posted: 09:18pm 09 Nov 2023
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most of those are resistive touchscreens... never liked those.
The one i found is a capsense.
Anyway i'm not stuck to one type of display. Just that i found a nice pcb with this display and a socket for the pico to jumpstart my development.

I may go with the character display after all

I have 40 outputs so one character per output to show on/off on the second (or fourth line if I use a 4x40)

Top line(s) to show instructions like program number, start time , step number, step count , day of week. plenty of space. And they are sunlight readable... most of the tft's cannot be read in sunlight.
 
pwillard
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Joined: 07/06/2022
Location: United States
Posts: 313
Posted: 01:15pm 06 Aug 2024
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Did you ever get anywhere with this?

The 52Pi EP-0172 is a nice looking dev board.
 
pwillard
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Joined: 07/06/2022
Location: United States
Posts: 313
Posted: 12:50am 02 Feb 2025
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Still curious...
 
matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10273
Posted: 08:18am 02 Feb 2025
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I'm looking at the GT911 but is is a complete b.....d to drive. Have a look at https://github.com/STMicroelectronics/stm32-gt911/tree/main for how much code seems to be involved
 
pwillard
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Joined: 07/06/2022
Location: United States
Posts: 313
Posted: 03:21pm 02 Feb 2025
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EGAD.
 
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