Does Arduino support threading?

In short: NO. But you may give it a shot at: http://www.kwartzlab.ca/2010/09/arduino-multi-threading-librar/

(Archived version: https://web.archive.org/web/20160505034337/http://www.kwartzlab.ca/2010/09/arduino-multi-threading-librar

Github: https://github.com/jlamothe/mthread

Not yet, but I always use this Library with big projects: https://github.com/ivanseidel/ArduinoThread

I place the callback within a Timer interrupt, and voilá! You have pseudo-threads running on the Arduino...