<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Also keep in mind the nature of IR and issues( or potentially benefits) of blockage / alignment, due to LOS restrictions. You will want to keep the data size minimal, and ideally wrap the data in some error correction scheme. Still though for straight forward stuff like sharing an email address or phone number pretty effective. <div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Oct 3, 2017, at 9:54 AM, Brian Oborn <<a href="mailto:linuxpunk@gmail.com" class="">linuxpunk@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Note that I looked into the IR receiver chip on the Playground Circuit Express and it's designed for IR remote control protocols (like for your TV) and as such has a very low bitrate. Using established IR protocols it would be around 500bits/s and if you hacked up your own protocol you might be able to get to 1000bits/s. Unless you changed the hardware (hook the IR receiver directly to the ARM's ADC?) you're not going to get much better than that.<div class=""><br class=""></div><div class="">Here's a reference on the NEC IR protocol for an example protocol: <a href="http://www.sbprojects.com/knowledge/ir/nec.php" class="">http://www.sbprojects.com/knowledge/ir/nec.php</a></div><div class="">And here's a link to the datasheet for the receiver preamp: <a href="http://www.vishay.com/docs/82748/vsop383.pdf" class="">http://www.vishay.com/docs/82748/vsop383.pdf</a></div><div class=""><br class=""></div><div class="">Just throwing out the design constraints before people get too excited about IR applications.</div><div class=""><br class=""></div><div class="">Bobby Tables</div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Mon, Oct 2, 2017 at 11:12 AM, Hunter Fuller <span dir="ltr" class=""><<a href="mailto:hfuller@pixilic.com" target="_blank" class="">hfuller@pixilic.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr" class="">Gang,<br class=""><br class="">shapr and I think it would be neat to make our own electronic badges for PhreakNIC this year. We've settled on a recently-released platform from Adafruit, the Circuit Playground Express. This platform has IR communication, so we'd like to focus on in-person interaction between badges. (His suggestion was to show matching interests based on LED color, but the possibilities are endless.)<br class=""><br class="">If you want one, it's going to cost $30. The default package will be this one:<br class=""><a href="https://www.adafruit.com/product/3517" target="_blank" class="">https://www.adafruit.com/<wbr class="">product/3517</a> <br class=""><br class="">So, you'll get the board, battery box, batteries, and belt clip.<br class=""><br class="">If you prefer to use a Li-ion or Li-ion polymer battery, and you already know how to charge one of those, please email me separately. I can buy you the board for $25, and I'll also buy you a battery if you need one (I recommend this battery <a href="https://www.adafruit.com/product/1578" target="_blank" class="">https://www.adafruit.com/<wbr class="">product/1578</a> as it'll fit behind the board while you're wearing the badge).<br class=""><br class="">The order will be placed on Wednesday - that is TWO DAYS from now. PayPal or Square Cash me $30 at this email address and you'll get in on the fun! You don't have to hack the badge if you don't want to - you can always just let me or shapr download some fun code onto it for you. We promise there will be lots of blinking, and some optional beeping.<div class=""><br class=""></div><div class="">Cheers!</div></div>
<br class="">______________________________<wbr class="">_________________<br class="">
This is the general mailing list.<br class="">
This list is for public discussion about Makers Local and related activities.<br class="">
To stop receiving mail from this list, write to <a href="mailto:general-leave@lists.makerslocal.org" class="">general-leave@lists.<wbr class="">makerslocal.org</a>.<br class=""></blockquote></div><br class=""></div>
_______________________________________________<br class="">This is the general mailing list.<br class="">This list is for public discussion about Makers Local and related activities.<br class="">To stop receiving mail from this list, write to <a href="mailto:general-leave@lists.makerslocal.org" class="">general-leave@lists.makerslocal.org</a>.</div></blockquote></div><br class=""></div></body></html>