Wemos D1 mini is like a little Arduino with wifi for a great price. It's based around the ESP8266, has one analogue port and 11 digital ports. It's
$4 Wemos D1 mini ESP8266 Board Supports Shields with a Temperature Sensor, a Button, a Relay, or a micro SD slot - CNX Software
Build a temperature controlled Wi-Fi power strip with WeMos D1 Mini NodeMCU and ESP8266 - Missing Remote
WeMos D1 mini Pro - ESP8266 based WiFi Module – Elektor
ESP8266 ESP 12 ESP 12F CH340G CH340 V2 V2.0 Micro USB WeMos D1 Mini WI – diymore
LOLIN D1 mini — WEMOS documentation
Wemos D1 mini is like a little Arduino with wifi for a great price. It's based around the ESP8266, has one analogue port and 11 digital ports. It's
Wemos D1 mini ESP8266
Attack On The Clones: A Review Of Two Common ESP8266 Mini D1 Boards
D1 Mini Pro NodeMCU and Arduino WiFi LUA ESP8266 WeMos Microcontroller with Antenna – Envistia Mall Support
Wemos ESP8266 Getting Started Guide With Arduino IDE : 8 Steps (with Pictures) - Instructables
Wemos D1 Mini ESP8266