shaddi

7 ms·

1.
by shaddi 12y ago
We don't support roaming yet, so phones from other carriers won't work on our networks. The networks are fully independent, with their own phone numbers and connectivity to the global phone network though. Definitely get in touch
2.
by shaddi 12y ago
Basically this. Spectrum regulations (both de facto and de jure) vary dramatically between jurisdictions. It's definitely a challenge, but not as big of a deal as one might expect, particularly for rural networks.
3.
by shaddi 12y ago
Our current model retails for $6,000. It's an exciting time to be working in this space -- five years ago, setting up a single tower in a rural location could cost upwards of $100,000.
4.
by shaddi 12y ago
Cofounder here. All service is prepaid, and we have a credit transfer system built-in. The network operator can load up credits onto someone's account directly through our management interface, and that user can resell it to whoever th
5.
Endaga Brings Rural Villages Online With a Cell Network in a Box(recode.net)
9 points by shaddi 12y ago|1 comments
6.
by shaddi 13y ago
It seems like there's been another surge of interest of late in mesh networks. Last time this happened, I wrote up a piece explaining why mesh networks are really a poor solution for circumventing censorship: http://sha.ddih
7.
by shaddi 14y ago
I have this sitting on my desk at the moment (just OpenBTS + rPi + a SDR). Nothing too crazy about it. I like this because they are using the rPi itself as a radio -- that's a pretty neat hack.
8.
by shaddi 15y ago
To be fair, they're not explicitly charging twice as much for consistent reads. You get consistent reads until you exceed your provisioned read amount, which unfortunately is measured in these odd units of "read capacity"). It's not clear (
9.
by shaddi 15y ago
I'm less worried about this actually -- I think the biggest problem is your own nodes interfering with themselves ("internal interference") rather than with an attacker. Agreed this is an issue though, and using omnidirectional antennas exa
10.
by shaddi 15y ago
Even an electronically steerable antenna would help, but then you start running up the cost of equipment. Interference is still an issue since one must always be listening from all directions for possible transmissions. Spectrum and time sc
11.
by shaddi 15y ago
I generally agree, but I tried to shed some light on the fundamental physics/math behind why building such a network is impractical. In any case, it might one day be possible, but I think a better use of resources (especially for non- and s
12.
Why wireless mesh networks won’t save us from censorship(sha.ddih.org)
104 points by shaddi 15y ago|34 comments
13.
by shaddi 15y ago
Yeah, that's the tricky part. It took a couple revisions in front of users to figure out the right way to do bootstrapping.
14.
Show HN: We built Callroulette, a chatroulette for phones(tier.cs.berkeley.edu)
76 points by shaddi 15y ago|29 comments
15.
by shaddi 15y ago
We need to get a dozen or so simultaneous users for it to work nicely. Please be patient! I'm seeing several users calling in right now. Edit: we've made some changes to greatly increase the likelihood of matching with someone!
16.
Show HN: Callroulette, a chatroulette-like service for phones(tier.cs.berkeley.edu)
14 points by shaddi 15y ago|2 comments
17.
by shaddi 16y ago
Excellent point -- no simple solutions. It's why this is a hard problem.
18.
by shaddi 16y ago
Once again, I don't dispute that; we're in full agreement. My key point is that the effects of liberalism that lead to growth in Hong Kong did not lead directly to growth in rural China; as nice as that would be, there were other forces at
19.
by shaddi 16y ago
I never meant to say communism was responsible for the country's economic growth. Clearly, liberalisation caused that, as your graphs imply. However, the growth was concentrated on the coast, and the existence of a central command economy w
20.
by shaddi 16y ago
Of course, that is clear. However, declaring a Charter City won't magically erase corruption and other structural causes of poverty, and bringing in a foreign party to impose governance brings its own set of issues / has historically not wo
21.
by shaddi 16y ago
Most folks I know living on reservations would debate that. Just saying, it's a strong claim to make.
22.
by shaddi 16y ago
It's arguable whether such a thing is possible. Cooperation, where all stakeholders have say in the endeavor, is probably close to ideal. But that's not colonialism. Once you start fixing all the problems that colonialism has (authoritarian
23.
by shaddi 16y ago
Perhaps more accurately, it doesn't work well for those involved who don't have power. Puppet governments seem to do quite well for themselves, as do the colonizers.
24.
by shaddi 16y ago
I'm not going to fault this piece for being hand-wavy and poorly justified: it is that, but then again, it's a piece of popular journalism which is allowed to be. So, I'll criticize the broader idea. This article cites China as a model. Hon
25.
by shaddi 16y ago
Right, but the idea behind direction finding is that you can triangulate the position of the transmitter. If you just have a bearing you have to search over a large area -- these links could be many kilometers long. Not saying it's impossib
26.
by shaddi 16y ago
Some good points here. A couple thoughts: - If, for some reason that I can't really conceive of, you wanted to connect to a far-away access point, you'd need a highly directional antenna (due to RF physics). Doing this actually makes direct
27.
by shaddi 16y ago
Alright, I'm an idiot. For some reason I had it in my head that development had ceased a couple years ago. Thanks for the info.
28.
by shaddi 16y ago
I've used Dummynet extensively (with great satisfaction!), but I've been looking for a more recently updated alternative (preferably with good Linux support). Is anyone aware of any such thing?
29.
by shaddi 16y ago
Isn't this already possible? There are plenty of day laborers who wait in the morning at "The Corner", and people with jobs for the day come pick them up. They work when they are able, and when there is a job for them. Regardless of whether
30.
by shaddi 16y ago
This pretty great, but it's also pretty anecdotal. How were these 13 chosen (probably not randomly)? What is the outcome going to be in 6 months? A year? Five years? Based on the (admittedly not extensive) work I've done trying to help home

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