ESP32 LoRa V2 and DS3231

#1

Hello, which pins should I use to be able to use the RTC DS3231 module on ESP32 Lora V2?

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#2

I’m using OLED SCL (GPIO15) and OLED SDA (GPIO04) for control and GPIO35 as interrupt input.

YG

#3

Hi, could you show me an example code?

#4

Hello,
have you made it work?
Regards

#5

Hello,
I found a solution…
SDA is the GPIO 21 and SCL the 22, and it worked, but after initialize the OLED display with “u8g2.begin()” this GPIO ports change to 15 (SCL) and 4 (SDA).
If after initialize the OLED display connect the I2C modules to 15 and 4, it works.
Other possibility is initialize the Wire library to use 15, 4 GPIO ports (with SoftWire library).
Issue explaining this GPIO port change: https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/issues/62
Regards