3.2 TFT SPI 240x320V1.0 with ILI9341

[georgjorge]

Now would like to change to my big display. Unfortunately, neither the wiki proposal nor the way PA2J to connect the display works. Maybe this is an issue of the processor, too.
Did anybodody try this configuration and has an idea to make it working?

[lenalotti]

Hello, I am using an 2,8" TFT with the ILI9341 and same resolution as you without any problems on a simple ESP32 DEVKIT V1 board running (version master_v0.9.4). My Hardware configuration is:
Display type=3; SDA=4; CLK=13; RST=14; RS=2; CS=0; TFT SPI speed=20000000.
Using other pin numbers should not matter, but the ILI9341 chip is made for a max speed of 20000000, not more !
good luck

[wrevenaugh]

@lenalotti - I am trying to connect an ILI9341 as well to a LILYGO (433mhz) Lora board (Arduino calls it a TTGO Lora32 OLED) with no luck. Also - when you say an ESP32 DEVKIT V1 - are you saying a regular ESP32 Wroom dev module? There's no 433 Lora chip on that board so I don't understand how are you able to use it as a balloon chaser.

[dl9rdz]

Usually this should work just fine. My standard test board for the TFT displays is a T-Beam. As mentioned above, one critical aspect is the SPI speed, the default (40MHz) is fine for the ILI9225, but the ILI9341 typically requires a lower (20MHz max) speed.

Also, do not use the configuration recommended in the Wiki for the T-Beam 0.7 on any newer T-Beam (v1.0/1.1/1.2). These newer version have the power management chip on some of the pins used in the suggested v0.7 wiring, and having both on the same pins will fail.

[wrevenaugh]

Thanks @dl9rdz, but I don't have anything on either the 9341 or the LoraBoard called "RS". What exactly is that? "Register Select"? I can see that being a big source of confusion for people trying to hook up an external display. And to be clear I have a T3_V1.6.1. Thanks! Bill