Depending on the required accuracy one possibility would be the Sharp GP2Y0A21YK IR distance sensor <https://www.sparkfun.com/products/242>.
It would give you a pretty good idea of the board width then refine on that using the stalled stepper/ servo current idea. Les On 13/05/2014 16:37, andy pugh wrote: > On 13 May 2014 13:55, Viesturs Lācis <[email protected]> wrote: >> The problem with this is that once the board passes through, the spring >> will return that lever to starting position very quickly and the motor >> might not manage to follow, so I cannot think of a nice way to adjust, how >> fast it returns back. > You could use http://www.slamproof.co.uk/Rotary-Dampers > > But, actually, replacing the whole spring/arm with a hydraulically > damped door closer would probably work rather well. > ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
