tag:blogger.com,1999:blog-4289452895058070746.post8071524910347592666..comments2024-03-21T12:57:28.930+02:00Comments on Microcontrollers, Electronics & Robotics: FairydustYtaihttp://www.blogger.com/profile/05373159288627167940noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-4289452895058070746.post-62958811515594637492014-12-27T14:17:54.404+02:002014-12-27T14:17:54.404+02:00Can you send schematic of the led boards to me too...Can you send schematic of the led boards to me too?<br />Anonymoushttps://www.blogger.com/profile/12160398879212449679noreply@blogger.comtag:blogger.com,1999:blog-4289452895058070746.post-32207944288483539112014-10-03T08:20:47.990+03:002014-10-03T08:20:47.990+03:00The constant current drivers are 3 copies of a sim...The constant current drivers are 3 copies of a simple circuit, similar to this one:<br />http://i.stack.imgur.com/5sKPR.png<br />It is hard-wired to regulate to about 350mA.<br />Different intensities are achieved by PWM. The PIC12 that I'm using has a 16-bit PWM, which I'm running at about 400Hz.<br />About the copper - exactly right. Without actually confirming that there's a problem to work without it, I assumed that because of how the heating elements are laid out the temperature might not be consistent. The copper plate attempts to mitigate that.Ytaihttps://www.blogger.com/profile/05373159288627167940noreply@blogger.comtag:blogger.com,1999:blog-4289452895058070746.post-63269207741652371732014-10-03T08:13:09.774+03:002014-10-03T08:13:09.774+03:00At its current state it is not worth sharing, as s...At its current state it is not worth sharing, as some improvements are needed for better noise immunity. I'm considering actually making another revision, which I'll happily share once it's ready and proved reliable.Ytaihttps://www.blogger.com/profile/05373159288627167940noreply@blogger.comtag:blogger.com,1999:blog-4289452895058070746.post-27405263067385219332014-09-26T18:02:16.290+03:002014-09-26T18:02:16.290+03:00Can you tell us a little more about the constant c...Can you tell us a little more about the constant current drivers on the pixel nodes? Are they all hardware based or is there some firmware involved using the DACs? Also, is that a copper sheet in your skillet? I assume to help spread the heat evenly. Thanks!sporadichttp://forkineye.comnoreply@blogger.comtag:blogger.com,1999:blog-4289452895058070746.post-34259645512032856922014-09-26T14:11:13.674+03:002014-09-26T14:11:13.674+03:00Can you share the schematic of the led boards?Can you share the schematic of the led boards?Anonymousnoreply@blogger.com