Sean McIntyre · designing technology to create art

Internet on Governors Island

I'm working with CJ to put up a WiFi network on Governors Island for the FIGMENT Interactive Sculpture Garden. Two of the sculptures, including his called BucketCraft are using network cameras to enhance interactivity.

Governors Island

We decided to go with Clear as our wireless service provider and picked up one of their WIXFBR-117 models. I've used Verizon for wireless Internet before and used their "month-to-month" service, but ended up paying cancellation fees and so on. Clear is by far the most consumer-friendly cell-network Internet provided in NYC!

Our Clear plan provides 1.5 Mbps down and 0.5 Mbps up plan. There are supposed to be 4 or 5 video streams coming from the sculptures and that much data may push the limits of the upload speed. We'll see!

The signal range of the WIXFBR-117 is about 30' outdoors, but we wanted to cover roughly 200'. I brought a Ubiquity NanoStation M2, which plugged directly into the WIXFBR-117 uplink and provided a second hotspot with Internet. We had some issues setting up the NanoStation, you can read out installation steps below. The range of the NanoStation is far superior, and easily reaches the far end of the park.

Governors Island Sculpture Garden area

CJ's project uses one network camera to stream video to the Internet. We wanted to make it accessible from the Internet, so we signed up for a free DynDNS pro account so that the Governors Island network had a reachable place on the Internet. On the WIXFBR-117, we added the DynDNS credentials to the dynamic DNS menu, disabled the firewall, and set up port forwarding on the WIXFBR-117 so that any communication to the camera's web interface port is redirected to the camera.

Tree house

Next steps are to set up a solar panel, which will power CJ's network camera, and a DIY power-monitoring device so we can keep tabs on how well it performs over the summer (and in case there are any issues!).

Setting up the NanoStation M2

It was nontrivial to set up the NanoStation M2 after resetting it, so here are instructions on how we got it up and running using an OS X 10.5 MacBook Pro (but the commands should work on any Unix-based system).

Gaining access to the web interface

This should be enough to populate the routing table. You can verify by running netstat -rn. Here's what my output looked like.

$ netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
10.0.0.0        0.0.0.0         255.255.255.0   U         0 0          0 eth1
192.168.1.0     192.168.1.20    255.255.255.0   UG        0 0          0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth1
0.0.0.0         10.0.0.1        0.0.0.0         UG        0 0          0 eth1

The important line is the destination network 192.168.1.0 with gateway 192.168.1.20 on interface eth0.

If that line isn't there, try running this command to add it manually.

sudo route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.1.20

Now you should be able to access the router via your browser, go ahead and navigate to 192.168.1.20.

Setting the device to be an access point

When making the NanoStation an access point (think normal wireless consumer router), there were a couple of settings I had to change that don't entirely make sense to me.

Thanks to Jonathan Baldwin for helping me troubleshoot the NanoStation!

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