On 06/02/2013 03:16 PM, Dave wrote: > If you are using a USB joystick as a pendant, which model are you using??
At least for my Sherline, a Logitech Dual-Action gamepad works wonderfully well. Here's the initial description: http://softsolder.com/2010/10/23/logitech-gamepad-as-emc2-pendant-eagle-schematics-for-the-joggy-thing/ It gives direct four-axis control: XY on the left, ZA on the right. The buttons along the top provide full-speed rapids and the joysticks go down to crawling speeds. The HAL circuitry detects which joystick axis starts moving and locks out all the others, which prevents inadvertent motion along an axis that you've already lined up against an edge. The buttons don't have that lockout, so you can slew diagonally at high speed when that's appropriate. More HAL wiring uses two of the four buttons on the cable side as an E-stop button: you must push both buttons to trigger the stop. Agreed, software should be in the E-stop loop, but this is a Sherline... and I haven't ever used those buttons, come to think of it, because shutting off the power to the motor driver box works even better. > How practical are USB joysticks for use as pendants on a milling machine? Probably not very, at least on a real milling machine that's spraying coolants and hot chips and piles of swarf all over. On the other hand, gamepads are cheap and easily replaceable, so you don't form a deep emotional attachment to them... -- Ed softsolder.com ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
