Comments on: LVGL with ESP32 Cheap Yellow Display Board (ESP32-2432S028R)

By: john chapli

john chapli — Mon, 28 Jul 2025 22:28:20 +0000

appreciate you help pls

I am trying to use a CYD to display to monitor my solar system and want to display some text headers followed by numerical values that I obtain from some web calls . I pared down your two button /slder example but sine the numeric display is tied to the slider (I do not want a slider, I actually would like a “bar graph”) How can I accomplish this pls. I have done some we b searches but to no practical avail

By: Sara Santos

Sara Santos — Tue, 29 Apr 2025 14:26:29 +0000

In reply to Andre.

Obrigada.
Tudo de bom e boa sorte com os seus projetos.
Cumprimentos
Sara

By: Andre

Andre — Mon, 28 Apr 2025 20:27:36 +0000

Sara e Rui, muito obrigado. Fiz exatamente os seus passos e o sketch subiu.
Vou analisar com calma, vocês são absolutamente formidáveis.
Sucesso!!!

By: Chris

Chris — Mon, 21 Apr 2025 12:34:28 +0000

In reply to Tim. You want github.com/lvgl-micropython/lvgl_micropython/ messing with header files is the old way.

By: Tim

Tim — Sun, 20 Apr 2025 05:21:03 +0000

Not sure about other peoples CYD boards, but my colours were inverted through the TFT driver. Setting TFT_INVERSION_ON in the User_Setup.h for the driver corrects the problem.

By: Mike_MCS

Mike_MCS — Sat, 08 Mar 2025 21:23:47 +0000

In reply to Sara Santos.

I’ve had great results with one 1300 mAh 9-volt battery. If you need more run time, put two in parallel.

Amazon
amazon.com/Rechargeable-Batteries-Microphone-Electronic-walkie-Talkie/dp/B0BC8LXK3B/ref=sr_1_26?crid=2N6LHCH2LXIRO&dib=eyJ2IjoiMSJ9.0vOqJEjiBWhLcxYysaGULLNk7iiOK61CCEdZq6-uTGNxJzpgGCiu67qflNVroy78gHey-rt-T–lGg9EGtD4_0XLGVrNdwrEQp7fuf7QwmIRzTKoHo9FQ7pnrJhg9Z6-pZStIc7oAp4LRlKFDJj3k1qwxBYx9iIFcewP77fQPILMu8rH2YkjOhSrhexmbk-0_Z_ZhMfdZ5B-_OMfIAvgfOSeXP3LGsMZcu6arahSlYelb5KiBjk73tHul4FnQVE68RvqapNyNrBQ7Sl2292yb05mm_0_NdFvIT8y6ZBKEDYAIdw9gD2HOGRWCw_dVNX25wTNn6C1oDaw_3N7NBBwVqbSxMqg99qUeykyHsTIL3yQqWm5mUO7rhzaIzr_92LolfJNHysAstYGTX_nr-L-HbNfyjzMiMJFQllxiyrUDcbJciVrP0bqO7Z1wIDn8KvZ.pThlSNUm14gLjUr9UWFPAsOTJgS622IRnMOibCvepqU&dib_tag=se&keywords=9%2Bvolt%2B1300&qid=1741468957&sprefix=9%2Bvolt%2B1300%2Caps%2C126&sr=8-26&th=1

By: Jan R. Ziebart

Jan R. Ziebart — Fri, 07 Mar 2025 18:57:24 +0000

In reply to Dale B. I connected a TC4056 LiPo Loading Board (amazon.de/gp/product/B0BZSB3SBN/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1) to the S1 (Ground) and the S3 (5v) Test Points near the Micro-USB Port. With a 1100mah LiPo I have now constant power to the board and as long as I plug the TC Board in, I charge the LiPo. The Test Points were easy to solder on, seems like my planned Tea Timer is in reach as the buzzer on the Audio-Port works fine. The CYD is on the Output pins of the TC4056 and the Battery in the Battery pins. What I still need to insert is a little switch to turn it off. Or maybe some deep-sleep wake up on touch will work???

By: Mike_MCS

Mike_MCS — Sun, 16 Feb 2025 16:34:38 +0000

I was previously using bb_spi_lcd.h without any touch input.

This tutorial worked perfectly.
I’m now looking to explore this further to better understand how the writing to the screen works. I would like to click on button 2 and put a different message in the “Hello World” spot. I thought this would be handled in the ‘event_handler_btn2’ section, but no matter how I try to access that label, I get a compile error.
Is it not possible to access an object outside of the object clicked?
Any guidance would be greatly appreciated. Thanks.

By: Sara Santos

Sara Santos — Mon, 03 Feb 2025 20:37:59 +0000

In reply to Chris.

That’s great.
Thanks for sharing.
Regards,
Sara

By: Chris

Chris — Mon, 03 Feb 2025 13:56:52 +0000

Here is a working sample of using lvgl_micropython on the CYB

github.com/lvgl-micropython/lvgl_micropython/discussions/281

This is the ili9341 screen with the xpt2046 touch chip (but is easy to change to the st7789 if you’ve got that one). See also the other discussions in there for other boards with other touch chips.

Here are all the pinouts and driver chip info for all the boards: github.com/rzeldent/platformio-espressif32-sunton/blob/main/esp32-2432S028R.json