http://forums.leaflabs.com/topic.php?id=5155 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:18:03 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=5155#post-20255 Wed, 10 Oct 2012 09:07:45 +0000 ee52bs 20255@http://forums.leaflabs.com/ <p>D7 is set as a PWM output since it is driving the servos. I will try changing the pull up resistors.</p> <p>Thanks,</p> <p>Ben </p> http://forums.leaflabs.com/topic.php?id=5155#post-17274 Thu, 27 Sep 2012 12:02:33 +0000 ala42 17274@http://forums.leaflabs.com/ <p>Have you configured D7 as output in push/pull mode at all or is it configured at floating input ? </p> http://forums.leaflabs.com/topic.php?id=5155#post-17110 Thu, 27 Sep 2012 02:45:27 +0000 okie 17110@http://forums.leaflabs.com/ <p>The design looks like it has a lot of overlapping ground return paths, which could be causing signal crosstalk. It may help to increase the size of the pull-up resistors on the I2C bus so that those pins don't draw as much current. If that doesn't help, buffering those pins may do the trick. </p> http://forums.leaflabs.com/topic.php?id=5155#post-16068 Mon, 24 Sep 2012 06:06:34 +0000 ee52bs 16068@http://forums.leaflabs.com/ <p>Hi,</p> <p>I am using pins D10 and D11 as the sda and scl lines for a bit banged I2C implementation, and D7 to drive a servo. I have found that when the I2C transmits it is causing pulses on D7 which are being read as a PWM signal and therefore changing the servo angle. Is there any reason why these pins should be interfering with each other? I am using an Olimexino STM-32 rev A.</p> <p>Thanks,</p> <p>Ben </p>