GeekLabs.dk

Dette dokument kan kun læses. Du kan se kildekoden, men ikke gemme ændringer i det. Hvis du mener at dette er en fejl, så skriv det venligst på fejl-oversigt.

<h1>Plans and thoughts</h1> <div class="level1"> </div> <h2>Connectivity</h2> <div class="level2"> <p> In the lab we already have internet access for future LoRaWAN<em><</em>→internet gateway functionality </p> </div> <h2>Hardware</h2> <div class="level2"> <p> The intial thoughts about gateway hardware is to go the DIY route to gain as much knowledge about the components and the TTN/LoRa technologies as possible. </p> </div> <h3>Raspberry Pi + IMST iC880A</h3> <div class="level3"> <p> The iC880A is A 868MHz LoRa concentrator board using SX1301 and 2 SX1257 chips which is available now for EUR ~150. </p> <p> The <a href="https://github.com/ttn-zh/ic880a-gateway/wiki" class="urlextern" title="https://github.com/ttn-zh/ic880a-gateway/wiki" rel="nofollow">DIY gateway from ttn-zh (Zürich) based on the iC880A</a> looks like an easy, capable and and relatively cheap solution (<a href="https://www.coredump.ch/2017/05/18/our-ttn-gateway-in-rapperswil-is-live/" class="urlextern" title="https://www.coredump.ch/2017/05/18/our-ttn-gateway-in-rapperswil-is-live/" rel="nofollow">blogpost about this solution</a>). </p> <p> <a href="https://github.com/ttn-liv/rpi-gateways" class="urlextern" title="https://github.com/ttn-liv/rpi-gateways" rel="nofollow">Ttn-liv (Liverpool) has forked</a> this setup, it should be investigated how this differs from ttn-zh. </p> <ul> <li class="level1"> iC880A specs; <a href="https://wireless-solutions.de/products/long-range-radio/ic880a" class="urlextern" title="https://wireless-solutions.de/products/long-range-radio/ic880a" rel="nofollow">https://wireless-solutions.de/products/long-range-radio/ic880a</a></li> <li class="level1"> iC880A shop; <a href="http://webshop.imst.de/ic880a-spi-lorawan-concentrator-868mhz.html" class="urlextern" title="http://webshop.imst.de/ic880a-spi-lorawan-concentrator-868mhz.html" rel="nofollow">http://webshop.imst.de/ic880a-spi-lorawan-concentrator-868mhz.html</a></li> <li class="level1"> iC880A backplane for Raspberry Pi; <a href="https://www.tindie.com/products/gnz/imst-ic880a-lorawan-backplane-kit/" class="urlextern" title="https://www.tindie.com/products/gnz/imst-ic880a-lorawan-backplane-kit/" rel="nofollow">https://www.tindie.com/products/gnz/imst-ic880a-lorawan-backplane-kit/</a></li> </ul> </div> <h4>Notes</h4> <div class="level4"> <ul> <li class="level1"> <a href="https://www.thethingsnetwork.org/forum/t/ic880a-concentrator-with-raspberry-pi-gateway/1897/22" class="urlextern" title="https://www.thethingsnetwork.org/forum/t/ic880a-concentrator-with-raspberry-pi-gateway/1897/22" rel="nofollow">This TTN forum thread</a> suggest an <a href="http://www.ebay.com/itm/Geekworm-UPS-HAT-Board-2500mAh-Lithium-Battery-For-Raspberry-Pi-3-Model-B-Pi-/122284870420" class="urlextern" title="http://www.ebay.com/itm/Geekworm-UPS-HAT-Board-2500mAh-Lithium-Battery-For-Raspberry-Pi-3-Model-B-Pi-/122284870420" rel="nofollow">UPS HAT for the Pi</a> to counteract effects of power failure.</li> <li class="level1"> A backplane for easy and stable connecting of Pi and iC880A; <a href="https://github.com/gonzalocasas/ic880a-backplane" class="urlextern" title="https://github.com/gonzalocasas/ic880a-backplane" rel="nofollow">https://github.com/gonzalocasas/ic880a-backplane</a></li> </ul> </div> <h3>Other options</h3> <div class="level3"> <p> A more open alternative to the closed iC880A is to contribute to development of existing similar concentrators with open schematics such as <a href="https://github.com/will127534/LoRa-concentrator" class="urlextern" title="https://github.com/will127534/LoRa-concentrator" rel="nofollow">this one for 433 MHz (US)</a> (<a href="https://hackaday.io/project/13373-lora-concentrator" class="urlextern" title="https://hackaday.io/project/13373-lora-concentrator" rel="nofollow">Hackster project</a>). </p> <p> The TTN <a href="https://www.thethingsnetwork.org/labs/" class="urlextern" title="https://www.thethingsnetwork.org/labs/" rel="nofollow">Labs</a> and <a href="https://www.thethingsnetwork.org/wiki" class="urlextern" title="https://www.thethingsnetwork.org/wiki" rel="nofollow">wiki</a> contains loads of possible node and gateway constructions. </p> </div> <h2>Software</h2> <div class="level2"> </div> <h2>Possible gateway location</h2> <div class="level2"> <ul> <li class="level1"> The labs' physical location is near ideal for coverage of the central parts of Esbjerg and we have a nice 3 story building to put an antenna on top of. However, we probably need the building owner's (which is <a href="http://www.tobakken.dk/images/PDF/Vedtaegter.pdf" class="urlextern" title="http://www.tobakken.dk/images/PDF/Vedtaegter.pdf" rel="nofollow">Esbjerg Kommune</a>) permission to install antennas on the roof. Have a feeling that might prove to be non-trivial.</li> </ul> <p> <em><</em>html><em><</em>img width=425 src=<a href="https://d1cuyjsrcm0gby.cloudfront.net/Ipl1PThzW53RrTmr2LRPMg/thumb-2048.jpg" class="urlextern" title="https://d1cuyjsrcm0gby.cloudfront.net/Ipl1PThzW53RrTmr2LRPMg/thumb-2048.jpg" rel="nofollow">https://d1cuyjsrcm0gby.cloudfront.net/Ipl1PThzW53RrTmr2LRPMg/thumb-2048.jpg</a>><em><</em>/img><em><</em>br><em><</em>a href="https:<em><a href="http://www.mapillary.com/app/?focus=photo&pKey=Ipl1PThzW53RrTmr2LRPMg"" class="urlextern" title="http://www.mapillary.com/app/?focus=photo&pKey=Ipl1PThzW53RrTmr2LRPMg"" rel="nofollow">www.mapillary.com/app/?focus=photo&pKey=Ipl1PThzW53RrTmr2LRPMg"</a>>Source: Mapillary</em><<em>/a></em><<em>/html> </em><<em>html> </em><<em>iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http:</em><a href="http://www.openstreetmap.org/export/embed.html?bbox=8.457874059677124,55.46397558698575,8.461240231990812,55.465572194573724&layer=mapnik&marker=55.46477389886096,8.45955714583397"" class="urlextern" title="http://www.openstreetmap.org/export/embed.html?bbox=8.457874059677124,55.46397558698575,8.461240231990812,55.465572194573724&layer=mapnik&marker=55.46477389886096,8.45955714583397"" rel="nofollow">www.openstreetmap.org/export/embed.html?bbox=8.457874059677124,55.46397558698575,8.461240231990812,55.465572194573724&layer=mapnik&marker=55.46477389886096,8.45955714583397"</a> style="border: 1px solid black"><em><</em>/iframe><em><</em>br/><em><</em>small><em><</em>a href="http:<em><a href="http://www.openstreetmap.org/?mlat=55.46477&mlon=8.45956#map=19/55.46477/8.45956"" class="urlextern" title="http://www.openstreetmap.org/?mlat=55.46477&mlon=8.45956#map=19/55.46477/8.45956"" rel="nofollow">www.openstreetmap.org/?mlat=55.46477&mlon=8.45956#map=19/55.46477/8.45956"</a>>Bigger map</em><<em>/a></em><<em>/small> </em><<em>/html> ===== Resources ===== * Slides with a LoRa overview and detailing a single channel Raspberry Pi gateway; <a href="http://cpham.perso.univ-pau.fr/LORA/resources/RPIgateway.pdf" class="urlextern" title="http://cpham.perso.univ-pau.fr/LORA/resources/RPIgateway.pdf" rel="nofollow">http://cpham.perso.univ-pau.fr/LORA/resources/RPIgateway.pdf</a> * LoRa FAQ with some nice deep technical details; <a href="https://www.link-labs.com/blog/lora-faqs" class="urlextern" title="https://www.link-labs.com/blog/lora-faqs" rel="nofollow">https://www.link-labs.com/blog/lora-faqs</a> * Some Resin.io software that I currently don't know what is at <a href="https://github.com/rayozzie/ttn-resin-gateway-rpi" class="urlextern" title="https://github.com/rayozzie/ttn-resin-gateway-rpi" rel="nofollow">https://github.com/rayozzie/ttn-resin-gateway-rpi</a> </p> </div>