David Bender 28 Posted March 8, 2013 Share Posted March 8, 2013 Hi, I am working on a breakout board that plugs into a Launchpad and exposes the extra P3 port. My current rev doesn't follow the LaunchPad 40 pin "standard" but I guess it can be adjusted in the next rev. If anybody is interested in using it please respond to this thread. Image: http://uploads.oshpark.com/uploads/project/top_image/6PmSJYiP/i.png It has nonpopulated passives for standalone operation as well. gwdeveloper, Automate, dubnet and 1 other 4 Quote Link to post Share on other sites
bluehash 1,581 Posted March 8, 2013 Share Posted March 8, 2013 Good try. I think you should follow one of the standards as it will fit more Boosters, especially the USC/USCI lines. Also power and GND. Quote Link to post Share on other sites
David Bender 28 Posted March 8, 2013 Author Share Posted March 8, 2013 So I get moving the P3 lines to the right inner header. Can you elaborate on your point about the USCI lines? Quote Link to post Share on other sites
spirilis 1,265 Posted March 8, 2013 Share Posted March 8, 2013 The USCI lines are correct for that board. Quote Link to post Share on other sites
cde 334 Posted March 9, 2013 Share Posted March 9, 2013 So I get moving the P3 lines to the right inner header. Can you elaborate on your point about the USCI lines? The USI/USCI lines are P1.5-P1.7. Those are the most important for booster packs, aside from vcc/gnd. Quote Link to post Share on other sites
gwdeveloper 275 Posted March 9, 2013 Share Posted March 9, 2013 Hello David, I'd be interested in buying a board or two when ready. Quote Link to post Share on other sites
David Bender 28 Posted March 10, 2013 Author Share Posted March 10, 2013 Thank you all for the input. I am getting 3 copies of my original design in less than two weeks. I have modified my design as per LaunchPad standard and should have some ready for general use by mid April. gwdeveloper, were you interested in one of my original ones or did you want the booster pack compliant one? Quote Link to post Share on other sites
gwdeveloper 275 Posted March 10, 2013 Share Posted March 10, 2013 I'd be interestd in both, actually. I like to use the 28pin because of the access to timers. Normally, I use the generic 28pin breakout boards that are purchased from eBay on the cheap. Quote Link to post Share on other sites
David Bender 28 Posted March 20, 2013 Author Share Posted March 20, 2013 Update: first 3 boards should be here March 22nd according to the USPS...we'll see. Quote Link to post Share on other sites
David Bender 28 Posted March 26, 2013 Author Share Posted March 26, 2013 After some tribulations with ESD and finding some copper pour fill issues I finally have a working board. It is running the blink demo. (edit: original pic showed unprogrammed 2252 in the DIP socket; new pic shows chip removed, which is what I intended) Rickta59 and bluehash 2 Quote Link to post Share on other sites
bluehash 1,581 Posted March 26, 2013 Share Posted March 26, 2013 Looking good David! Quote Link to post Share on other sites
timotet 44 Posted March 26, 2013 Share Posted March 26, 2013 good work! Quote Link to post Share on other sites
David Bender 28 Posted May 14, 2013 Author Share Posted May 14, 2013 If you are interested in getting one of these, they are finally for sale here: https://analog10.com/store/BOB-G2553-28.html They are presoldered with the 28 pin chip and 0 ohm resistors for P2.6 and P2.7. Quote Link to post Share on other sites
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