[thearn4]

I think ESP8266 boards (running something NodeMCU) are becoming the more popular replacements for Arduino. They're super cheap, and have integrated Wifi.

Cool thing about them is that you can write in C-like AVR code (like Arduino), or micro versions of Lua, Python, and other choices.

[agumonkey]

It's extremely cheap, packs of lolin nodemcu for 10$, and that's the "noob kit".

btw ESP32 are reaching the 6-7$ range for module + serial board.