tag:blogger.com,1999:blog-23681518.post6480303091074771497..comments2023-10-14T04:05:08.546-07:00Comments on Diary of a Technocratic Anarchist: X & Y Axes operational from the controllerForrest Higgshttp://www.blogger.com/profile/17208965471464716174noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-23681518.post-35363911367610845432012-01-04T06:50:13.544-08:002012-01-04T06:50:13.544-08:00We started to build a 3D printer as well and we ha...We started to build a 3D printer as well and we had similar problems: http://6brueder.wordpress.com/2011/12/27/x-schiene-extruder-und-heizbett/powtachttps://www.blogger.com/profile/02920075627409721811noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-6219757231406025722011-07-28T10:39:21.798-07:002011-07-28T10:39:21.798-07:00Absolutely! :-DAbsolutely! :-DForrest Higgshttps://www.blogger.com/profile/17208965471464716174noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-31296987308133982912011-07-28T10:37:13.503-07:002011-07-28T10:37:13.503-07:00I understood why you put switches on both sides (I...I understood why you put switches on both sides (I did too :D on the testbot), as it will help a lot with "everything". Primary reason I'm using both side switches is that I want to have firmware that does not need to know the print area + I want to have firmware that is able to do relative movements too so home does not need to be "known physical location"Bogdan Kecmanhttps://www.blogger.com/profile/01325622305629819241noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-25533165329520778732011-07-27T17:27:06.148-07:002011-07-27T17:27:06.148-07:00"Have you tried pushing the driver+motor+firm..."Have you tried pushing the driver+motor+firmware combo to check what max speed you can achieve without slippage?"<br /><br />Yup! 65 mm/sec is about the top. :-)<br /><br />"Are you counting steps between button presses? Would be cool to count steps between them and calculate deviation after few hours running."<br /><br />Done that. Wrote a file on the SD card with the data.<br /><br />"Even without slippage there is a significant chance of non equal number of steps per iteration because of imperfect switches."<br /><br />There definitely is. <br /><br />As with Rapman, however, I only expect to reset to minimum limts switches once during a print, so that isn't really an issue. The reason I am using double limits switches is to have a positive signal to stop the steppers from trying to push the printer carriage off the ends of the x or y axes. Rapman has a problem with that from time to time.<br /><br />As well, with minimum and maximum limits switches I can define a specific zone on the print table for a print.Forrest Higgshttps://www.blogger.com/profile/17208965471464716174noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-74062132063804337512011-07-27T17:17:52.049-07:002011-07-27T17:17:52.049-07:00Have you tried pushing the driver+motor+firmware c...Have you tried pushing the driver+motor+firmware combo to check what max speed you can achieve without slippage?<br /><br />Are you counting steps between button presses? Would be cool to count steps between them and calculate deviation after few hours running. Even without slippage there is a significant chance of non equal number of steps per iteration because of imperfect switches.<br /><br />arhiBogdan Kecmanhttps://www.blogger.com/profile/01325622305629819241noreply@blogger.com