tag:blogger.com,1999:blog-32189272854968531592011-09-21T07:26:59.532-07:00microcontrollers, just for the fun of itbiomolhttp://www.blogger.com/profile/14429569478443709975noreply@blogger.comBlogger31100tag:blogger.com,1999:blog-3218927285496853159.post-73670963130326994092010-12-23T12:14:00.000-08:002010-12-23T13:59:47.090-08:00<div>We're back, and it's for good! uc4fun is starting a new project, and to start developing some code we thought it'd be a good idea to redesign our "arduino-inspired" prototyping board: it has a 40pin Atmega644 uC with access to all it's ports, plus a JTAG header connector to plug in our Dragon debugger and have some GDB-DDD goodness.</div><div><br /></div><div>Here's a small time-lapse video of the board's building process:</div><div><br /></div><div style="text-align: center;"><object width="320" height="266" class="BLOG_video_class" id="BLOG_video-45684cd3a8d0cbbe" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0"><param name="movie" value="http://www.youtube.com/get_player"><param name="bgcolor" value="#FFFFFF"><param name="allowfullscreen" value="true"><param name="flashvars" value="flvurl=http://v13.nonxt7.googlevideo.com/videoplayback?id%3D45684cd3a8d0cbbe%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1330313425%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D6A38EF3608DC4D2119B7238674AE035D8DFB8DC4.30BBB66F31E39F0933FA8521A474C75DCD8F3DE0%26key%3Dck1&amp;iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3D45684cd3a8d0cbbe%26offsetms%3D5000%26itag%3Dw160%26sigh%3DYpdSvfHjy7hbHjqNsgPZ-CNkP6E&amp;autoplay=0&amp;ps=blogger"><embed src="http://www.youtube.com/get_player" type="application/x-shockwave-flash"width="320" height="266" bgcolor="#FFFFFF"flashvars="flvurl=http://v13.nonxt7.googlevideo.com/videoplayback?id%3D45684cd3a8d0cbbe%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1330313425%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D6A38EF3608DC4D2119B7238674AE035D8DFB8DC4.30BBB66F31E39F0933FA8521A474C75DCD8F3DE0%26key%3Dck1&iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3D45684cd3a8d0cbbe%26offsetms%3D5000%26itag%3Dw160%26sigh%3DYpdSvfHjy7hbHjqNsgPZ-CNkP6E&autoplay=0&ps=blogger"allowFullScreen="true" /></object></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/3218927285496853159-7367096313032699409?l=uc4fun.blogspot.com' alt='' /></div>biomolhttp://www.blogger.com/profile/14429569478443709975noreply@blogger.com0tag:blogger.com,1999:blog-3218927285496853159.post-8927603580919832782009-07-29T13:36:00.001-07:002009-07-29T14:18:16.721-07:00<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://1.bp.blogspot.com/__meev7MFEso/SnCzIoewmzI/AAAAAAAADG0/jxw7VU4ftDQ/s1600-h/IMG_0627.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 400px; height: 300px;" src="http://1.bp.blogspot.com/__meev7MFEso/SnCzIoewmzI/AAAAAAAADG0/jxw7VU4ftDQ/s400/IMG_0627.JPG" alt="" id="BLOGGER_PHOTO_ID_5363984117085018930" border="0" /></a><br />This weekend I spent some time bulding what will be the solution for permanent storage problems : SD card breakout board!!! I'm not so good at electronics, but it's tested and all the signals arrive correctly where they should ;)<br />The next steps are developing the SPI - SD communication protocol and a simple FAT16 implementation (contributors are welcome !!! )<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/3218927285496853159-892760358091983278?l=uc4fun.blogspot.com' alt='' /></div>biomolhttp://www.blogger.com/profile/14429569478443709975noreply@blogger.com39tag:blogger.com,1999:blog-3218927285496853159.post-50040958903661945622009-06-13T07:24:00.000-07:002009-06-14T00:49:44.023-07:00<object width="320" height="266" class="BLOG_video_class" id="BLOG_video-3c95235485b7d88c" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0"><param name="movie" value="http://www.youtube.com/get_player"><param name="bgcolor" value="#FFFFFF"><param name="allowfullscreen" value="true"><param name="flashvars" value="flvurl=http://v16.nonxt4.googlevideo.com/videoplayback?id%3D3c95235485b7d88c%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1330313425%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D6E2C38ADA390F1550A2B2C2F4C1A2237B21B0409.6C42F6DE509C7752206311ED62C400E9E18438DA%26key%3Dck1&amp;iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3D3c95235485b7d88c%26offsetms%3D5000%26itag%3Dw160%26sigh%3DQbMdRcDBW2HYeeikLrSVmFQRpHY&amp;autoplay=0&amp;ps=blogger"><embed src="http://www.youtube.com/get_player" type="application/x-shockwave-flash"width="320" height="266" bgcolor="#FFFFFF"flashvars="flvurl=http://v16.nonxt4.googlevideo.com/videoplayback?id%3D3c95235485b7d88c%26itag%3D5%26app%3Dblogger%26ip%3D0.0.0.0%26ipbits%3D0%26expire%3D1330313425%26sparams%3Did,itag,ip,ipbits,expire%26signature%3D6E2C38ADA390F1550A2B2C2F4C1A2237B21B0409.6C42F6DE509C7752206311ED62C400E9E18438DA%26key%3Dck1&iurl=http://video.google.com/ThumbnailServer2?app%3Dblogger%26contentid%3D3c95235485b7d88c%26offsetms%3D5000%26itag%3Dw160%26sigh%3DQbMdRcDBW2HYeeikLrSVmFQRpHY&autoplay=0&ps=blogger"allowFullScreen="true" /></object><br /><span style="font-size:100%;"><span style="font-family:arial;"><br /></span></span><br /><span style="font-size:100%;"><span style="font-family:arial;">Proof that the light sensor integration works ;) </span></span><span style="font-size:100%;"><span style="font-family:arial;"><br /><br /></span></span><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://4.bp.blogspot.com/__meev7MFEso/SjSrh41m3cI/AAAAAAAACig/lUJyiYUuOLo/s1600-h/sensor_detail.JPG"><img style="margin: 0px auto 10px; display: block; text-align: center; cursor: pointer; width: 320px; height: 264px;" src="http://4.bp.blogspot.com/__meev7MFEso/SjSrh41m3cI/AAAAAAAACig/lUJyiYUuOLo/s320/sensor_detail.JPG" alt="" id="BLOGGER_PHOTO_ID_5347087256276884930" border="0" /></a><br /><br /><span style="font-size:100%;"><span style="font-family:arial;">The sensor used is a TEMT6000, that just gives a voltage value between 0 and 1.5V depending on the ambient light conditions.</span></span><br /><span style="font-size:100%;"><span style="font-family:arial;">This video also shows that the analog filtering mechanism is working ok (average of N samples).<br /><br /></span></span><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/3218927285496853159-5004095890366194562?l=uc4fun.blogspot.com' alt='' /></div>biomolhttp://www.blogger.com/profile/14429569478443709975noreply@blogger.com1