Arduino compatible with ESP8266 WiFi Processor with a separate 1 ampere 5V regulator for powering servos. Kit includes integrated LEDs and speaker and sensor modules. Two sensor modules are included; Ultrasonic/light/thermal sensor module and accelerometer mdoule. Can be powered from USB. Servos require external power.

Order from Pratt Hobbies ($80)
Documents:

Sten-SLATE Lessons