Processing

http://www.petronet.ir/documents/10180/2323248/Getting_Started_with_Processing
http://www.sci.brooklyn.cuny.edu/~sklar/teaching/s09/cis3.5/hw/labII.1.pdf

http://www.hrenatoh.net/curso/index_pro.html

https://processing.org/

http://www.openprocessing.org/

https://www.sparkfun.com/news/1752

http://web.csulb.edu/~hill/ee444/Labs/S%2714%20Labs/Lab%201/Lab%201B%20PID%20Control%20Lab.pdf

http://processingjs.org/