There was a good talk about these at LinuxConf AU: <a href="http:&#x2F;&#x2F;mirror.linux.org.au&#x2F;linux.conf.au&#x2F;2016&#x2F;05_Friday&#x2F;Wool_Museum&#x2F;Free_as_in_cheap_gadgets_the_ESP8266.webm" rel="nofollow">http:&#x2F;&#x2F;mirror.linux.org.au&#x2F;linux.conf.au&#x2F;2016&#x2F;05_Friday&#x2F;Wool...</a><p>... they&#x27;re a very exciting device and incredibly cheap, and the supplied SDK libs look very nice, even though they aren&#x27;t quite fully open source.<p>The NodeMCU boards are very useful even if you&#x27;re not interested in Lua, they add power, USB and breadboard friendly headers in a smallish package.<p>I&#x27;ve started messing around with different ways to program them for educational purposes: <a href="http:&#x2F;&#x2F;nick.zoic.org&#x2F;etc&#x2F;flobot-graphical-dataflow-language-for-robots&#x2F;" rel="nofollow">http:&#x2F;&#x2F;nick.zoic.org&#x2F;etc&#x2F;flobot-graphical-dataflow-language-...</a>