White screen on ILI9341 used with ESP32-S3 board

Other Hardware Displays
22

while connecting to the usb, can you kindly tell me what you get as a reading, when you touch a red probe of a multimeter to the 3.3 pin and black probe to gnd? can you tell me what reading your board is giving? So that i can know if it is my board's fault or not?

23

ESP32 3v3 pin reads 3.3.Volts with display connected
ESP32 5v pin reads 4.75.Volts with display connected

25

mine is reading 3.8 and the 5 v reading is same as yours, that means my inbuild voltage regulator is faulty for the ESP32s3 board right?

26

are you connecting any other resources or just the esp32 with the tft screen?

27

3.8v is high and may cause problems with some 3.3v devices
which specific ESP32S3 module are you using?
have you any other ESP32 modules you could try?

28

I do not have any other. have a ESP32 cam module with the code uploading board

29

I do not have any other. have a ESP32 cam module with the code uploading board only

30

the ESP-CAM probably does not have sufficient spare pins to drive the TFT
worth getting a couple more ESP32S3 modules or just move to ESP32?

31

if i use the lovyangfx, i do not have to change anything in the user setup or ANything right? just install the library, set the pins properly in the code, in the connection and it will be done right?

32

if i use the lovyangfx, i do not have to change anything in the user setup or ANything right? just install the library, set the pins properly in the code, in the connection and it will be done right? correct6 me if i am wrong

33

yes - I set up the MISO, MOSI, etc configuration and it worked

34

you set them within the code right, not in other setup files like the tft_espi library

35

you set them within the code right, not in other setup files like the tft_espi library right?

36

yes

37

Or your meter is faulty.

38

hI horace, thank you for all the help you tried to gave me from yesterday. i found the actual issue, it was related to my inbuild 3.3v regulator. that is why it didn't respond. i plugged all the vcc and led with an external 3.3 v power suply and add the code like you mentioned with all the pins connected with the esp32s3. it worked. atleast I know now that my tft is okay. i put a request to replace my board. hopefully will get it soon. Once again, thank you mate! God bless you.

39

A multimeter is a useful tool for debugging software/hardware.

Another is the oscilloscope - the other day by looking at ESP32 GPIO pins I found that the signals were not on the pins I had specified - another header file had updated definitions

also worth getting is a logic analyzer

40

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