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3.5" 2050 TFT LCD
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3.5" 2050 TFT LCD

by victorbramhall on Mon May 03, 2021 3:03 pm

I have two recently purchased displays. They both work perfectly with the exception of the Touchscreen. Included is the documentation used for the wiring and connections. Would like some help getting them working.

Thank you,
Victor Bramhall
Attachments
Touchscreen.png
Touchscreen.png (158.52 KiB) Viewed 154 times
320x480 Touch.PNG
320x480 Touch.PNG (304.6 KiB) Viewed 154 times
Schematic_ADAFRUIT 3.5 LCD CLOCK v3.1_2021-04-30.png
Schematic_ADAFRUIT 3.5 LCD CLOCK v3.1_2021-04-30.png (82.84 KiB) Viewed 154 times

victorbramhall
 
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Re: 3.5" 2050 TFT LCD

by adafruit_support_mike on Tue May 04, 2021 1:52 am

Post a photo showing your actual hardware and connections and we'll take a look. 800x600 images usually work best.

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Re: 3.5" 2050 TFT LCD

by victorbramhall on Tue May 04, 2021 7:40 am

Thank you,
Victor
Attachments
20210504_054641.jpg
20210504_054641.jpg (130.79 KiB) Viewed 136 times
20210504_054628.jpg
20210504_054628.jpg (135.12 KiB) Viewed 136 times

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Re: 3.5" 2050 TFT LCD

by victorbramhall on Tue May 04, 2021 7:52 am


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Re: 3.5" 2050 TFT LCD

by adafruit_support_mike on Tue May 04, 2021 10:46 pm

What pin numbers are you using in the code when you create the TouchScreen object?

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Re: 3.5" 2050 TFT LCD

by victorbramhall on Wed May 05, 2021 6:29 am

Y+ - A0
X+ - 32
Y- - 15
X- - A1
325 ohms

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Re: 3.5" 2050 TFT LCD

by adafruit_support_mike on Thu May 06, 2021 1:33 am

Those look good, thank you.

With power disconnected from everything, what resistance do you measure between the X+/X- and Y+/Y- pins (D32 to A1, and A0 to D15)?

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Re: 3.5" 2050 TFT LCD

by victorbramhall on Sat May 08, 2021 6:18 am

325 ohms

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Re: 3.5" 2050 TFT LCD

by victorbramhall on Sat May 08, 2021 6:25 am

Only 1/4 of the touchscreen in the y axis is sensitive. But I can adjust the screen response with the map() function to full screen. Both displays that I have react the same way.

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Re: 3.5" 2050 TFT LCD

by victorbramhall on Wed May 12, 2021 6:46 am

I purchased two more 2050 displays, and they have the same problem. I will now test them with an Arduino MCU instead of the ESP32. I sure do like the ESP32 though.

Victor

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Re: 3.5" 2050 TFT LCD

by adafruit_support_mike on Wed May 12, 2021 5:30 pm

Try changing the resistance value in the code. See if that has any effect on the amount of screen coverage.

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Please be positive and constructive with your questions and comments.