small speedo for selfrighter drill motor

Her are some good links for making a giant servo using an arduino:

An introduction to making a linear actuator into a servo:
http://www.youtube.com/watch?v=BP8cc5he ... sults_main

An explanation of how it work:
http://www.youtube.com/watch?v=T3PiexN1 ... 0B9916E4AD

A good website explaining the code:
http://abigmagnet.blogspot.co.uk/2008/1 ... t-one.html

i think i'd have my weapon and selfrighter on a seperate tx for someone else to do the weapons for me cause managing driving, weapon and a self righter would be impossible! think i'll just go for a speedo, i no james uses little speedos for the drill motor that powers for the arms of preditor.