Hi friends!
I have an ILI9341 attached to an ESP32 Devboard, it initially threw a white screen but I eventually got an output by reseating the pins; however turning it on today I'm getting a persistent white screen output and I'm concerned that I've misunderstood the voltage requirements.
I have included the link where I purchased the specific component from, but my understanding is that it's 5V unless you bridge the 'J1' jumper then you can use 3.3V from the ESP32 Devboard.
The display was showing information before, so I don't think it's my pin or user_setup.h that is the problem.
| Display Component |
ESP32 Pin |
| VCC |
5V |
| GND |
GND |
| CS |
GPIO 15 |
| RESET |
EN |
| D/C |
GPIO 2 |
| SDI (MOSI) |
GPIO 13 |
| SCK |
GPIO 14 |
| LED |
GPIO 21 |
| SDO (MISO) |
GPIO 12 |
Display issues can be pretty frustrating as a white screen isn't very helpful, but fingers crossed I can fix it without buying a replacement as it'll take a while to arrive!
Thank you for any help you can pass my way, I'd appreciate it! 
Please post a link to an English datasheet. The foreign language sales site is useless.
Describing a problem by using a "word salad" or vague sketches like “frizzy” doesn’t help anyone understand what’s really going on. In electronics, the basic language is the schematic —not casual descriptions. If you're asking for help, you need to provide a clear, complete, and accurate schematic of your circuit. That includes every connection , not just the parts you think are important. Be sure to show:
- All power and ground lines
- All power sources and their voltages
- Component values, part numbers, and orientation if important
- Pin numbers and labels for all ICs and connectors
If you're using a breakout board, module, or prebuilt system, include a link to the datasheet or product page not just a name or part number. A photo of your wiring can help, but it does not replace a proper schematic.
Without this level of detail, people can only guess at what might be wrong. The more precise your documentation, the faster and more accurate the help you'll get.
