Wifi-servo

Control a servo via wifi.

Hardwar

MakerHawk D1 Mini NodeMcu 4M Bytes Lua WIFI Development Board Base on ESP8266 ESP-12F N Compatible NodeMcu Arduino (Amazon)
Servo

Download the Arduino IDE from the arduino.cc.
I found an OSX driver for the board at github.com on adrianmihalko's page. You will want the files under the ch340g-ch34g-ch34x-mac-os-x-driver repository.
Once both of these are installed open up the Arduino IDE
Go into the preferences and add the url as stated in the product description above (sorry can't post the url here)
In the "Board Manager" search for and install the latest version of the "esp8266" generic module
Select the new "Port" added by the driver: (mine was"/dev/cu.wchusbserial14120")
Set the "Reset Method" to: nodemcu
All done!