Hi, I just realized I forgot to write about the Babel workshop at Pas Sage en Seine, which was more than two weeks ago.
I first gave a short presentation, mostly to recall basic network concepts, see [1] or [2] (in French). The slides are available at [3]. Then, there was about one hour of workshop: people could come with their laptop, install babeld and ahcpd and connect to the mesh network deployed there. There were about 15 people with laptops, and someone had a router (but I don't think he managed to connect it to the mesh, unfortunately). Most people got it working, but some didn't. We've had one kernel panic, and a few people that were on the wrong ad-hoc cell, even though they were using the same channel; we might have hit the cell limit, or simply a bug in their wireless driver. The base network was built using a raspberry pi (exporting a route to the Internet) and four TP-Link WR703N, of which two were talking with the raspberry pi over the existing wired network. Everybody was using the same wireless channel. Shortly after the workshop, the network looked like this: http://ze.polyno.me/babel/babelweb-pses2013-1.png Another capture showing feasible routes: http://ze.polyno.me/babel/babelweb-pses2013-2.png There are about ten screenshots of babelweb available at [4]. The goal was to get people to discover and play with Babel, and show that it works in practice; I consider this workshop a success on this regard, even though it was somewhat disorganized. The workshop was held on Saturday, but a few people connected to the mesh network again on Sunday :) On Fri, Jun 21, 2013 at 02:46:57PM +0200, Juliusz Chroboczek wrote: > I've just received this from our common friends: > > http://www.pps.univ-paris-diderot.fr/~jch/cantine-20130621.jpeg Nice shot! We actually haven't used the Foneras, since we experimented with the TP-Link WR703N [5] on OpenWRT AA. These routers are small but excellent. Compared to the Fonera, they draw almost no power: a Fonera gets very hot within tens of minutes, while the TP-Link were still cold after 3 days of intensive use. Since they have an USB port, it would be easy to turn them into cheap multi-radios routers using an USB dongle. However, they have a few drawbacks: - limited flash space. A friend successfully bundled babeld, ahcpd and tor, but it was tight. - no external connector for antenna. Note that there are hardware hacks to do this anyway [6]. Regards, Baptiste [1] http://lacantine.ubicast.eu/videos/22-06-2013-124257/ [2] http://transmission.progval.net/PSES2013/reseau_mesh.mp4 [3] http://ze.polyno.me/babel/slides-mesh-pses-20130622.pdf [4] http://ze.polyno.me/babel/babelweb-pses2013-nomac.tar [5] http://wiki.openwrt.org/toh/tp-link/tl-wr703n [6] http://wiki.openwrt.org/toh/tp-link/tl-wr703n#hardware.mods
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