Missing library ESP8266WiFi.h

  • Device & model:
    Wemos D1 R2 + 433-module

  • Dashboard: Web

  • Observed Bug:
    Till today (30 November 2017 roundish 12:00 CET) it was possible to treat the Wemos D1 R2 like an Arduino UNO with some additional libraries including ESP8266WiFi.h. Continue with my project the compile fails on this library.

    C:\Users\WJ\Documents\Arduino\MQTT_FINAL\MQTT_FINAL.ino:16:26: fatal error: ESP8266WiFi.h: No such file or directory #include “ESP8266WiFi.h”

    compilation terminated.
    exit status 1
    Error compiling for board Arduino/Genuino Uno.

Any thoughts about this?
Should I move with a Wemos D1 R2 to MQTT?

Think I solved my own problem.
When this occurs the solution is to force a system “Build options changed, rebuilding all

Footnote: Think I am switchting to much between devices (UNO and Wemos) and environments (Arduino or MQTT); Arduino 1.8.3 does not like this apperently.

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