"Brandon,
The image is a real RTK used to get ground truth for the positions. It depends on the environment whether antennas need to be slightly elevated. Any type of vegetation or trees can obscure the signals or decay them, which decreases results,…"

"I did use that A4960 chip, but had to dump it because it was taken off the market and also it's not suitable for projects that involve this kind of motor drive. What you could do is look for A4960 projects (they are around) and look into the source…"

"Hi Jure,
I noticed the freescale libraries later on. Part of the exercise was to implement this myself and if you look at the algorithm, it looks pretty trivial. The thing you do need is a good processor with floating point.
Symptoms of the…"

"Btw, one of the things I didn't even get close to was a technique to further improve the efficiency of the ESC. Most implementations use a simple PWM scheme for the motor actuation. When vector control is already used, most of the computational…"

"The ground pad was soldered. The docs contain the datasheets with additional info on the BoostXL board (the board that has the driver chip pre-soldered), which contains more info on how to route, solder and place components.
The chip was soldered…"

"Well, I did some searching around and these low level interfaces are great when you have hardware that interfaces with it and know what to do (have an oscilloscope, plenty of patience, etc). The raspi cam is specifically for the raspi and the csi-2…"

"Very nice. Years ago, I used libchamplain a lot, which has support for lines, polygons and animated markers, but that hasn't been updated in a while. Very useful if you want to visualize things that are going on in a mission."

"So 0.01ha is roughly half a meter on either side. That's a bit too small for using satellite images. QGIS for example has this openlayers and georeferencing plugin that you could look at using. Then you use the satellite images to find good natural…"

"Martin,
People have been experimenting with better GPS's that have higher output frequencies, so you get better fixes where photos were taken. This does help to increase the accuracy. Another important issue is to get the time exactly right when the…"

"As I found out, to send priv messages, you first need to be buddies. I created a gmail account for this project:
gisprojection@gmail.com
If you wish to collaborate, send an interesting link or otherwise contact the project, send an email there. "

"Colin,
Indeed, regulations don't drive anything. Maybe the statement shouldn't be "regulations raise uncertainty", but "lack of regulations raises uncertainty"?"

"I disagree with the statement that regulations raise uncertainty. In fact, I think the opposite is true. In the few weeks after FAA regulations were announced, a number of new investments into big companies were also announced: 3DR, DJI and…"