Please help ESP32 Lora

#1

hi guys
i just received 2 ESP32 Lorawan
this one :https://www.amazon.fr/gp/product/B076T28KWG/
but i have really big problems
At first, it is ok to connect to my ttn gateway, but if i am more than 20 meters the gateway, it is not work !
Second problem : when i connect a BMP280 sensor, i don’t have pin to connect SDA and SLA (on arduino nano, it is pin 4 and 5 with wire librairie…but no work on esp32)
Thanks for your help

#2

  1. Check the RSSI and connect the right frequency antenna to Ipex connector.

  2. If your board is V2, SDA is GPIO21 and SCL is GPIO 22, you should check with esp32 pinout.
    https://resource.heltec.cn/download/WiFi_LoRa_32/WIFI_LoRa_32_V2.pdf