tag:blogger.com,1999:blog-721739666225174355.post3720162484076886765..comments2023-09-30T13:57:53.332-05:00Comments on Machinekit Blog: Adding Home/Limit Switchescdsteinkuehlerhttp://www.blogger.com/profile/12028187486525768375noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-721739666225174355.post-22270159995850922382014-02-07T16:16:32.785-06:002014-02-07T16:16:32.785-06:00It's on page 10 of the manual. If you email m...It's on page 10 of the manual. If you email me directly (or otherwise get me your email address) I can send you a copy.<br /><br />Limit switch (digital) inputs<br />J9 – X-max limit sensor – BeagleBone gpio11<br />J10 – X-min limit sensor – BeagleBone gpio10<br />J11 – Y-max limit sensor – BeagleBone gpio9<br />J12 – Y-min limit sensor – BeagleBone gpio8<br />J13 – Z-max limit sensor – BeagleBone gpio78<br />J14 – Z-min limit sensor – BeagleBone gpio79cdsteinkuehlerhttps://www.blogger.com/profile/12028187486525768375noreply@blogger.comtag:blogger.com,1999:blog-721739666225174355.post-1637230489069401112014-02-07T15:41:41.042-06:002014-02-07T15:41:41.042-06:00Hello Charles, I have seen the manual on the threa...Hello Charles, I have seen the manual on the thread and know that the Limit Switches are located from J9 to J14. <br /><br />https://www.dropbox.com/s/7xclttsl5eqbk1u/Pin%20Out.jpg<br /><br />I also know that the GND/Neg/Pos are located as follows... <br /><br />https://www.dropbox.com/s/64ij7z003wbxl9a/Board%20Layout.jpg<br /><br />What I don't know is which J? is for X/Y/Z/E? I didn't see that in the 2 page manual. Perhaps I don't have the right one?<br /><br />Thanks for your prompt reply.<br /><br />LTMNOhttps://www.blogger.com/profile/03457397124541881190noreply@blogger.comtag:blogger.com,1999:blog-721739666225174355.post-50227742872777121282014-02-07T13:53:51.053-06:002014-02-07T13:53:51.053-06:00On my board, the reference designators are on the ...On my board, the reference designators are on the bottom of the PCB. The limit switches are the three-pin headers. Do you have the BeBoPr manual? If not, email me directly and I'll send you a copy.cdsteinkuehlerhttps://www.blogger.com/profile/12028187486525768375noreply@blogger.comtag:blogger.com,1999:blog-721739666225174355.post-88187492795993929602014-02-07T12:16:17.613-06:002014-02-07T12:16:17.613-06:00Hello, I have searched high and low for a diagram ...Hello, I have searched high and low for a diagram explaining what is what on the BeBoPr Cape. Which J8-14 is which, where do you hookup your Limit/Homing Switches.<br /><br />ThanksLTMNOhttps://www.blogger.com/profile/03457397124541881190noreply@blogger.comtag:blogger.com,1999:blog-721739666225174355.post-49867321722727553102013-10-05T03:25:48.129-05:002013-10-05T03:25:48.129-05:00[Just saw this - didn't get a ping.]
I wire...[Just saw this - didn't get a ping.] <br /><br />I wired up the simple switch NC. X-max is in the corner by the PWMs; on this three-pin connector, I used the two pins farthest from the corner (or put another way, toward the reset switch). <br /><br />It sounds like you're wiring the right pin (2) and driving it low (which seems right, given the pull-up). Maybe verify with a simple switch that the X-max pin input works first, then test the hall effect sensor?<br /><br />Also, are you looking at the right gpio? 2_5 would be shown as gpio69 in /sys/kernel/debug/gpio. Brandonhttps://www.blogger.com/profile/09754881746789317508noreply@blogger.comtag:blogger.com,1999:blog-721739666225174355.post-427045841363041492013-09-13T14:07:52.072-05:002013-09-13T14:07:52.072-05:00Brandon,
How did you wire up the limit switch on ...Brandon,<br /><br />How did you wire up the limit switch on the BeBoPr itself? I am trying to use a hall effect sensor instead of an actual switch and I wired it up so that when the sensor detects a magnetic field close it bias its internal transistor and brings pin 2 on the BeBoPr input for X_Max to low (shorts to ground) thus causing the Yellow LED to come on but when I open a terminal (LCNC is still running and active) the gpio pin still shows lo and never shows high? <br /><br />I am using the BBB with Bridge so for my setup the gpio is 2_5 (P8-09) not 0_11 like the White. I made the neccessary changes in the setup files and Charles already has the DTS setup correctly for this arrangment.. Any ideas? I tried it on all 3 MAX inputs with 3 seperate sensors and nothing happens when LED is on or off for that matter.<br /><br />Bob<br />Anonymoushttps://www.blogger.com/profile/17172701845813151694noreply@blogger.com