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• Bart look at this post ES32-wroom 2.8 in display will not program again GPIO 12 is causing the problem and this post shows how to fix it setting esp32 fuses to permanently power the flash with 3.3 volts

  in Ive nuked CrowPanel 3.5 HMI Please help need default firmware and bootloader Comment by Marktecwiz October 6
• Thanks Julita I could not figure it out from that post but I asked Elecrow. This is from Elecrow and I tested it and it works. In the file where lv_init (); is I added the following lines disp_drv.drawbuf = 1; //added lines below heredisp_drv.sw_r…

  in ESP32S3 HMI display Square Line Arduino Comment by Marktecwiz April 3
• Re: Flicker (Quote) **I removed all the grey and I found a function of mine that was writing to the display very ofte. Now the 5 inch display does not flicker at all. **

  in ESP32 5inch display Comment by Marktecwiz March 9
• I just purchased a new 5inch display and it flickers on grey screen. Does this new screen have the mod? Mark

  in Why does the screen flicker when it displays in gray? Comment by Marktecwiz February 29
• I found a post regarding the flicker Because the voltage value of VCOM 3.3V is not enough. Inputting 3.8V to VCOM can solve this flickering problem.

  in ESP32 5inch display Comment by Marktecwiz February 24
• Sun So the screen is flickering slightly at 12mhz frame rate. I am going to try to run the MQTT on the second core but I do not have experience in doing that. Any reference will be apreciated Mark

  in ESP32 5inch display Comment by Marktecwiz February 23
• Sun I changed the frame rate from 16mhz to 8 and mqtt worked - but the display flickered I found that 12 mhz worked and 14 mhz does not work, When I first boot up the display it flickers a little then seems to stop or at least is not noticiable. Eve…

  in ESP32 5inch display Comment by Marktecwiz February 23
• Sunny I tried the above and get the same problem. I used this example https://github.com/khoih-prog/AsyncMQTT_ESP32/tree/main/examples/ESP32/FullyFeatured_ESP32 it worked better then the first code I posted which answered my question on why use the…

  in ESP32 5inch display Comment by Marktecwiz February 23
• Thank you Sun for you quick response. Can you give me a quick explanation as to why I need the to use the RTOS library?

  in ESP32 5inch display Comment by Marktecwiz February 23
• Hello Winny thanks for your reply You said "IO36 and IO377 have been occupied by the module's internal OSPI PSRAM, so you can not use them as I2C port RE: PINS 36 and #7" I said "ESP pin 37 and 36 " that is TXD0 and RXD0" B…

  in USB OTG for ESP32 display HMI Display modules Comment by Marktecwiz January 17
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