This cable connects the Arduino to the ESP8266 WiFi module. The TX and RX lines are then tapped into. Each wire is routed to the RX pin of two different serial to USB adapters. This way ...

Like the ESP32, it has Bluetooth LE 5.0 in addition to WiFi. Espressif ... and ran the module through power and speed comparisons with the ESP32 and ESP8266 — and it beats them both by a ...