Hi, I got my Delta Type printer moving with the Machinekit image from Charles and compiled with the lineardeltakins from Jeff Epler. Thank you guys for the wonderful work, Also a big thanks to Michael and Bas for getting me up to speed. I’m not yet ready to compile the ubc3+ja4 branch, but that’s just a matter of time now that I’m plunging more and more into Linux and LinuxCNC.
Here’s little video of my printer writing “LinuxCNC" on a piece of paper. http://youtu.be/G2oQGTJH4Vc Now as I’m going froward I want to correctly set up my stepper motors. I checked the step time, step space, direction and hold. I’m wondering if my calculations are right regarding the setup of the stepping. When powering the motors in LinuxCNC I get the messages "stepgen.0/1/2.maxvel is too big for current step timing & position-scale, clipping to max possible". Sometimes I get a joint following error. So I did some reading on the LinuxCNC wike Am I going in the right direction if I calculate: STEPLEN + STEPSPACE (each 1000ns for my stepsticks acc. http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Latency-Test) = 2us SCALE = 64 steps per mm (16x micro stepping) STEPGEN_MAX_VEL = 2us with 64 steps per mm thus gives (1/2us)/64 = 7812.5 and that means my MAX_VELOCITY can never be higher than STEPGEN_MAX_VEL? When I run latency-test I get approx 60.000 ns jitter. But these are for software stepping, and the PRU on beagle bone takes care of the stepping if i read correctly. Now reading http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Following_Error where do I set the BASE_PERIOD. Is that the SERVO_PERIOD in the .ini file? to make a long story short: how should i properly configure my stepping setup for the BBB + BeBoPr-Bridge Thanks Bas ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
