Monthly Archives: April 2014

Gov Island Trip #2

Tomorrow morning our team (Daniel, Pia, and I) will be heading out to Governors Island again after our first trip didn’t quite work out. While we got a little flying time last Monday, we couldn’t get the camera paired with the wireless extender, or with the apps on our phones. There was a lot of trial and error, but after class Ben discovered that the QR code on the box of the respective Phantom itself needed to be scanned with the phone that wanted to be used with the Phantom. Also, we learned that the wireless extenders are specific to a Phantom, so now everything is labeled appropriately.

As for our goals for tomorrow: We’ll be headed back out to the western side of the island where we’ll be filming the new park. Lexi will direct us as to where specifically we’ll be able to shoot (as long as it doesn’t interfere with ongoing construction) and give us recommendations for any other places on the island that would be visually appealing. Our ultimate goal is to get multiple sweeping shots of the park from different heights/perspectives.

Additionally, we’ll be interviewing Elizabeth Rapuano, GI’s director of communications. We’ll try to keep it to about 30 minutes and use her responses between shots of the park/island. She’d also mentioned there may be other people we could interview, but couldn’t confirm their availability until we actually arrived so we’ll play it by ear.  However, Elizabeth’s content alone will be more than satisfactory for our needs.

DJI Controller Hack

DJI Controller Hack

Last week I hacked one of our DJI controllers to work with our new Zenmuse brushless gimbal. I looked around for a good tutorial on how to modify the controller to interop with the new parts, but didn’t find a comprehensive one. Because of that, I tried to document the process, step-by-step, so that others can do it too! Special thanks to Ben Kreimer for all the tips.

This is what you’ll need to get the job done:
-Soldering iron, solder
-Desoldering pump
-Wire clipper/plier combo
-One potentiometer, or other variable resistor if preferred (I could see a slider working well!)
-Small phillips head screwdriver
-Three 6 inch wires, ideally in three different colors
-Hot glue gun, glue cartridges
-Small, sturdy knife
-Scissors

Step 1
Unscrew and separate the controller case into its two parts. Be gentle because the power and ground wires running from the battery connect the two halves of the case and need to be unplugged.
photo 2(1)

Step 2
On the front side of the case, you will see a silver loop between the two sticks for connecting a harness. Unscrew it, and discard or save. We have to remove it to make room for one of the silver, three way toggle switches that we are about to relocate. With your knife, carefully shave away some of the plastic from where the harness loop was housed to make room for the switch.

Step 3
Unscrew one of the three way toggle switches and relocate it to the center hole. photo 1(2)

Step 4
Remove the white plastic slide toggle from the front of the case by sliding your knife under each side and gently prying upward.
photo 1(1)

photo 2(2)

Step 5
On the inside of the case, unscrew and lift the circuit board and flip it around so you can see the underside (the side with the LED).

Step 6
Using the hot soldering iron and desolerding pump, remove the solder from the three pins of the orange, stock potentiometer. The picture below shows the three spots that need to be unsoldered.
photo 4(2)

Step 7
While your soldering iron is hot, solder your replacement potentiometer to your three 6-inch wines. Power, Signal, and Ground. I used Red for power, Blue for signal, and Black for ground. Then, put the potentiometer in the hole that we made by moving the three way toggle switch.
photo 3(3)

Step 8
Solder the other ends of the wires to the circuit board. They must be soldered correctly to Power, Signal, and Ground as shown in the picture below. If the Power and Ground wires are switched, it will work fine, but the direction that the potentiometer controls will be inverted. Choose whichever way you think is more intuitive. Also, if you make a mistake at this stage, you can always unsolder and switch the wires!photo 5(3)

Step 9
Using scissors, cut a half inch sized piece of glue gun cartridge. Make a pile of hot glue on the inside of the case, in the spot mirroring the newly added potentiometer and stick the glue stick piece in it until it has dried. In the picture below, I used a piece of plastic, but anything will work.
photo 2(1) copy

Step 10
Make sure the circuit board and all other parts are in their places, and rescrew case back together (don’t forget to plug the power and ground lines from the battery box back in!). That’s it, you’re done! Make sure to test the modifications before taking the phantom out into the wild!
photo 4(1) copy

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originally posted at fletcherlearns.com

Bell Labs Project update 4/14/14

This week, Neil and Pam went back to the Bell Labs with Ben Kreimer and got awesome aerial footage, including going up and over and through the transistor monument, as well as over the main complex.

Neil transcribed the Eric Rosenthal interview, and I transcribed and starting choosing selects for the Jon Gertman interview. Fletcher has been choosing archival footage selects, and Pam has starting doing a mock-up of the site. We’re also planning to get two more interviews. Things are starting to come together!

New Phantom 2 Vision Firmware Comes With No-Fly Zones

Very interesting discovery in class today—we connected the Phantom controller to the PC settings agent and learned that firmware 3.0 is out.

One of the most noteworthy updates: No Fly Zones!

Screen Shot 2014-04-07 at 5.07.22 PM

There are now firmware-enabled restrictions on where the DJI product can fly. We knew that it would not operate in certain politically sensitive areas (ahem, Tienanmen Square). But now there are safety restrictions in place. The Phantom will not fly within 5 miles of a Class A airport, or .6 miles from a Class B airport. If you wander into one of these zones, mandatory altitude will be enforced.

IMG_20140407_165920

This is how safety measures will be achieved in civilian UAS—through software limits and autonomous systems. Code is law! Super interesting how cyberlaw considerations (DRM and backdoors) find their way into hobby aircraft space. The analogy pervades.

Update on Gov Island

Pia,and I have joined forces to work together on Governors Island, and Daniel has offered to help as much as he is able. We’ve been in contact with Elizabeth Rapuano, the director of communications for Governors Island, who will be our main point of contact for the project. Our team will continue to develop our script and assign roles for researching the parts of the island we want to shoot, as well as approach individuals we want to interview. Ultimately we’re looking to make about a five minute video.

Our next steps are submitting our proposed dates to Elizabeth and setting out for Governors Island at our first opportunity (weather permitting). Before that we’ll have a working script, confirmed our shot list, and our interview subjects. Additionally, Pia and I will log more flight time to get more comfortable with the Phantom.