Let's Make Robots!

how to work with this

good day guys.. do you have any ideas of using tachometer of an inkjet printer in reading rpm's? i want to use this one for reading rpm's using arduino..thank you very much.

Remote Controlled Robotic Arm question

hello guys i want to ask something about this node

http://letsmakerobots.com/node/22346

how to manipulate the two .pde's

im new in arduino..

tnx for helping