Hi Colin The dials are normally graduated, and a spin of however much should move the machine exactly that amount. Unless it's being used in a velocity mode, where turning the wheel means move continuously, and stop means stop. (also a debated topic (overrun))
However, I want to supply the encoder only, similarly, as illustrated below. The terms 'jog wheel', MPG and pendant are often used in a mixed way. http://www.directencoders.com/products/mpg30/mpg30.asp But there are just too many configurations to start making the keypads too. In fact, my preference is for the MPG to mounted on the swivel panel, leaving a hand free, of which we often need a few more. Regards Roland On 25 March 2011 16:39, Colin K <[email protected]> wrote: > Roland, > > You might be interested in some of the work I've done on this: > http://ckcnc.wordpress.com/2011/02/13/we-have-a-winner/ > > I solved the problem by adding a 25-key keypad, so there's both an MPG and > buttons for continuous feed of any axis. I think the continuous feed is > very > useful for using the mill in pseudo-manual mode. > > I've experimented with a variety of encoders for the MPG, and I definitely > prefer detents. So far, my favorite of the bunch is a Grayhill 32-count > encoder, which retails for $26 at the usual places going down to I think > half that in quantities of 100. It's an optical encoder so the output is > very clean and reliable. I've also experimented with some mechanical ones > that cost closer to $3 each, but they are less reliable; that is, if you > move them slowly, one click = one pulse, but if you start rotating them at > a > steady rate, 10 clicks might equal 5 or 8 pulses. This was with no effort > to > smooth the signal in any way, so YMMV. > > The hardest part for me has been the keypad. The approach I've done in the > video linked above actually feels nicer in the hand than it looks, and > while > not NEMA-rated, should hold up well for ordinary usage. But it's fussy to > fabricate and have it not look, well, homemade. Membrane keypads would > simplify this greatly, but at non-trivial cost, and without the benefit of > allowing end-users to make their own custom keypads. > > On Fri, Mar 25, 2011 at 7:15 AM, Roland Jollivet > <[email protected]>wrote: > > > Hi All > > > > I'm looking at manufacturing low cost OEM MPG's and just wanted to field > > opinion on the wheel. > > > > Some have a knob on them, while others have a few indents in the wheel. > > Personally I see the indent as preferable, as in not getting bumped/bent, > > but just wanted to see if there was some consensus or convincing > arguments > > for either. > > Since this list has the brightest people around, I thought it's the best > > place to ask ;-) > > > > Yes, best option is to provide both. > > > > Regards > > Roland > > > > > ------------------------------------------------------------------------------ > > Enable your software for Intel(R) Active Management Technology to meet > the > > growing manageability and security demands of your customers. Businesses > > are taking advantage of Intel(R) vPro (TM) technology - will your > software > > be a part of the solution? Download the Intel(R) Manageability Checker > > today! http://p.sf.net/sfu/intel-dev2devmar > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > ------------------------------------------------------------------------------ > Enable your software for Intel(R) Active Management Technology to meet the > growing manageability and security demands of your customers. Businesses > are taking advantage of Intel(R) vPro (TM) technology - will your software > be a part of the solution? Download the Intel(R) Manageability Checker > today! http://p.sf.net/sfu/intel-dev2devmar > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
