Newbie
Joined: 14/10/2018
Location: United StatesPosts: 24
| Posted: 05:41pm 09 Nov 2023 |
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 ...
Guru
Joined: 17/05/2016
Location: United StatesPosts: 3255
| Posted: 08:45pm 09 Nov 2023 |
You could use a 3.5" 480x320 SPI ILI9488--considerably better than a 2x40.
~
Edited 2023-11-10 06:46 by lizby
Newbie
Joined: 14/10/2018
Location: United StatesPosts: 24
| Posted: 09:18pm 09 Nov 2023 |
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.
Senior Member
Joined: 07/06/2022
Location: United StatesPosts: 298
| Posted: 01:15pm 06 Aug 2024 |
Did you ever get anywhere with this?
The 52Pi EP-0172 is a nice looking dev board.
Senior Member
Joined: 07/06/2022
Location: United StatesPosts: 298
| Posted: 12:50am 02 Feb 2025 |
Still curious...
Guru
Joined: 11/12/2012
Location: United KingdomPosts: 9805
| Posted: 08:18am 02 Feb 2025 |
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
Senior Member
Joined: 07/06/2022
Location: United StatesPosts: 298
| Posted: 03:21pm 02 Feb 2025 |
EGAD.