/challenges-projects/project14/programmable-logic/b/blog/posts/bb-cpld---a-robotics-expansion-board-for-the-beaglebone-black-with-an-altera-max-ii-epm1270When you build robots you always have to control lots of motors or RC servos. If you use a micro controller as main computing device you are fine because these devices have plenty of PWM outputs to control motors. But when you switch to more powerfu.en-USTelligent Community 12https://community.element14.com/challenges-projects/project14/programmable-logic/b/blog/posts/bb-cpld---a-robotics-expansion-board-for-the-beaglebone-black-with-an-altera-max-ii-epm1270Sun, 21 Jul 2019 19:39:50 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:c62a8af8-554f-4307-a76c-05f95f72445fJan Cumps0<p>Impressive! </p><p>I&#39;m trying little baby steps to do something half similar, but using the onboard PRU:</p><p>Have as much as possible of the motor output pattern managed by the real time units, and the main controller only sending instructions.</p><p>The PRU should then output the pulse trains for the stepper drivers (I&#39;m using DRV8711 - not for a particular reason, just because I have that one).</p><p>I&#39;ll be happy if I can eek out a pulse train out of the system with a controllable ramp up, max speed and ramp down ...</p><img src="https://community.element14.com/aggbug?PostID=7455&AppID=234&AppType=Weblog&ContentType=0" width="1" height="1">