wESP 32 pinout - need help please

lighthouse · July 14, 2023, 9:35am

Hi there

I am about to configure a wESP32 (https://wesp32.com/) to connect it to the RG-9 rain sensor Rain Gauge Model RG-9 |. The wESP32 features a ESP32-WROOM-32E board.

I cant select this specific board within ESPHome.

question 1: which device type should I choose within ESPHome, the generic ESP32 or ESP32-C3?

question 2:

I need the following pins on the wESP32: UART RX GPIO33/ UART TX GPIO39

Which pins would it be on the generic ESP32-device? I guess its GPIO1 and GPIO3.

on the other hand I have to enable the ethernet-component which is on GPIO16 and GPIO17.

# for board rev.7 and up
ethernet:
  type: RTL8201
  mdc_pin: GPIO16
  mdio_pin: GPIO17
  clk_mode: GPIO0_IN
  phy_addr: 0

appreciate any help, I spent hours of research and am not really sure with the pinout and want to avoid any damage to the ESP or the rain-sensor.

all the best

Andrew

nickrout · July 14, 2023, 10:14am

No it is exactly as it says in the diagram, gpio13 and gpio12

nickrout · July 14, 2023, 10:16am

And the setup for ethernet is described here

lighthouse · July 14, 2023, 10:19am

thanks for the quick reply. do you mean GPIO12 and GPIO13 on the wESP32?

that seems logical, I was not sure if I may have to adapt the GPIO Pins because on the ESP32 WROOM pinout GPIO12 and GPIO13 are no UART pins.

nickrout · July 14, 2023, 10:24am

you can decide which pins are UART, I2C, SPI, PWM, etc – you just need to assign them in the code. This is possible due to the ESP32 chip’s multiplexing feature.

From ESP32 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials