GitHub - mecparts/RetroWiFiModem: An ESP8266 based RS232 <-> WiFi modem with Hayes AT style commands and LED indicators
![Amazon.com: ESP8266 ESP-01S NodeMCU Development Board, CH340, WiFi Module, for Arduino : Electronics Amazon.com: ESP8266 ESP-01S NodeMCU Development Board, CH340, WiFi Module, for Arduino : Electronics](https://m.media-amazon.com/images/I/61jyvkI60HL._AC_UF894,1000_QL80_.jpg)
Amazon.com: ESP8266 ESP-01S NodeMCU Development Board, CH340, WiFi Module, for Arduino : Electronics
![Wire up your own RS-232 WiFi modem for under $10 using ESP8266 and Zimodem firmware. | Sub-Etha Software Wire up your own RS-232 WiFi modem for under $10 using ESP8266 and Zimodem firmware. | Sub-Etha Software](https://i0.wp.com/subethasoftware.com/wp-content/uploads/2018/02/ESP8266To3WireTTLAdapter.jpeg?resize=625%2C306&ssl=1)
Wire up your own RS-232 WiFi modem for under $10 using ESP8266 and Zimodem firmware. | Sub-Etha Software
![Amazon.com: HiLetgo 1PC ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Small) : Electronics Amazon.com: HiLetgo 1PC ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Small) : Electronics](https://m.media-amazon.com/images/I/71ZUXpbgc1L._AC_UF894,1000_QL80_.jpg)
Amazon.com: HiLetgo 1PC ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Small) : Electronics
![Connect Esp8266 NodeMCU to Wifi Network | Esp8266 Station Mode | How to connect Esp8266 to Wifi - YouTube Connect Esp8266 NodeMCU to Wifi Network | Esp8266 Station Mode | How to connect Esp8266 to Wifi - YouTube](https://i.ytimg.com/vi/4U9LRJWbw_E/maxresdefault.jpg)