Figure out how to use long-range 2.4GHz.

[aqilc]

WiFi - might not be possible since laptops do not support it:

• https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-guides/wifi.html
• Long Range Wifi for ESP32: https://www.hackster.io/news/long-range-wifi-for-the-esp32-9429ab89f450
  • 802.11 LR
    • This offers about 125Kb/s of bitrate.
    • Can go up to a Kilometer.
  • https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/wifi.html#wi-fi-protocol-mode
• Long Range WiFi usage in actual code: https://esp32.com/viewtopic.php?t=13639
• Code for setting up a WiFi Access point with a fixed IP and sending a webpage: https://randomnerdtutorials.com/esp32-static-fixed-ip-address-arduino-ide/

LoRA - Laptops also don't support:

• https://randomnerdtutorials.com/esp32-lora-rfm95-transceiver-arduino-ide/
• Offers up to several Kilometers of range in open areas (like lakes?)
• Even lower bitrate, at 0.3 to 50 Kbps (bits).

ESP-NOW - Most Viable Option, uses 2 ESP-32s, can use WiFi underneath:

• https://www.reddit.com/r/esp32/comments/1dmwz4p/espnow_vs_wifi_range/
• https://forum.arduino.cc/t/help-making-simple-esp32-esp-now-broadcast-two-way-program/1314993

Current Plan:

• Connect the ESP32 to an access point that is connected to our laptops through Serial:
  • ESP32 1 acts in STATION mode, where it connects to the ESP32 2 on land.
  • ESP32 2 acts in ACCESS POINT mode, where it listens for packets from the other ESP32 with a preconfigured IP Addr.