Amazon.com: HiLetgo 1PC ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Small) : Electronics
Scriptmonkey_ on Twitter: "I appear to have made a useful internet thing! :) Using a nodemcu esp8266 Dev board, a cheap hdmi switch from Amazon, bit of soldering and @IFTTT with MQTT
Making Your Own Technically-HDMI OLED Monitor | Hackaday
NodeMCU V3 Lua WIFI Module ESP8266+32M Extra Memory Flash USB Serial CH340G|Instrument Parts & Accessories| - AliExpress
GitHub - xdissent/esp-cec: ESP8266 Arduino library for HDMI CEC communication