Support debugging for Espressif ESP8266 ESP-12E · Issue #280 · platformio/platform-espressif8266 · GitHub
Amazon.com: AITRIP 5 PCS ESP8266 NodeMCU CP2102 ESP-12E Internet WiFi Development Board Open Source Serial Wireless Module Works Great Compatible with Arduino IDE/Micropython (5PCS) : Electronics
NodeMCU: a ESP8266 based low cost IoT board – 42 Bots
Getting Started with ESP8266 NodeMCU Development Board| Random Nerd Tutorials