As purchased from here.

• arduino-LoRa
• oled-ssd1306

• In the Arduino sketches, ensure that the radio frequency you are using is commented/uncommented correctly

  //#define LORA_BAND  433
  //#define LORA_BAND  868
  #define LORA_BAND  915
  

In the Arduino IDE, I chose the board 'TTGO LoRa32-OLED V1', compiled the sketch to verify it works, and then uploaded to the board. You'll need two boards, one to send, and one to receive. Ensure the LORA_BAND matches in both sketches otherwise they won't be able to communicate.

I designed a case based on the designs of similar cases on Thingiverse, which includes a spot for the antenna. It's a tight fit, but it should work fine.

case

• https://github.com/lewisxhe/TTGO-LoRa-Series
• https://github.com/LilyGO/TTGO-LORA32-V2.0
• https://github.com/LilyGO/LORA-ESP32-OLED
• https://github.com/SensorsIot/LoRa-Board-Test-2