Not necessarily. You can use the S3's built-in USB Serial/JTAG controller for connection to PC for flashing and serial IO.

I want to connect the Touchscreen and LCD with SPI, I2C or that I80 thing. So the ESP-S3 runs FreeRTOS and manages the connections via RS485 and Ethernet and simultaniosly ...

thanks for the answer :)

i found and ordered the correct board now.
But since this board uses UART and i wanna connect as much IO as possible, there is another question.

The Dev-Kit of the ESP32-S3 has 2 micro USB ports.
So to save some IO pins i thought i could use one of those for my RS485 ...

Hello guys,

i want to build a little HMI for myself with an ESP32-S3.
I do this just for learning purposes and because its fun tinkering around.

I´ve searched the internet for the right Touchscreen display module which i can use for prototyping but there are so many of them.
Does anyone have a ...

Hello,

Im currently trying to build a simple plc with an esp32-s3.

There i want to integrate a RS485 interface but i have a few questions.

What is the logic level of the uart of the esp? 5V or 3.3V?

And does anyone of you have an idea if i should do a half or full duplex rs485?

Thanks in ...