Newtonville, MA

Please tell us a bit about your UAV interest

I'm mostly into fixed wings at the moment, but I can see myself getting involve in multirotors going forward. I build all my own airframes, so often an autopilot is just a good way to test out the airframe when LOS or FPV is not suitable.



Activity Feed

Izzy Brand commented on Chris Anderson's blog post Another Pixhawk-powered glider drop from a high-altitude balloon
"For high altitude winds I used the excellent habhub predictor. They have a bunch of other useful tools for high altitude weather balloon launches.
Now that this is getting some views, please help me figure out why the glider oscillated in roll for…"
Jul 14, 2018
Izzy Brand replied to Izzy Brand's discussion Dropped from balloon: DesRoll Square Wave in AUTO - ArduPlane 3.8.4
"It was in AUTO mode with a LOITER waypoint specified on the ground. It hadn’t reached the waypoint at that point in the flight, however. From the onboard camera it appeared to be rolling back and forth at about 1hz"
May 27, 2018
Izzy Brand posted a discussion
Just dropped a scratch built flying wing from a high altitude weather balloon. Here's quick vid of detaching at altitude.The glider did the right thing and managed to land on it's own at the target landing site, but while looking at the logs I…
Jan 16, 2018
Izzy Brand posted a discussion
My question is fairly simple: how does one decide on the ideal dimensions and ratios for a flying wing given the target cruising speed and payload or other relevant flight characteristics.For a more conventional aircraft, I feel like I have a fairly…
Jan 1, 2016
Izzy Brand replied to Izzy Brand's discussion 12s Voltage Sensing for Pixhawk
"What I ended up doing is creating a voltage divider and feeding the output of that into the module. This is in parallel (not series!) with the load. You get your voltage sensing capabilities, but no current sensing."
Nov 4, 2015
Izzy Brand posted a discussion
This is a feature request:On the A2 flight controller, there is a two level battery voltage warning. At the first threshold, the status LED turns yellow simply to indicate to the pilot that the voltage is low. At a second threshold, the status LED…
Aug 6, 2015
Izzy Brand posted a discussion
Hi all, I have two rather large Aerial Photography platforms outfitted with Pixhawks. One runs on 6s and the other on 12s. I need to solve the voltage sensing problem.In both cases, I have no interest in sensing current (partially because it would…
Jul 29, 2015
Izzy Brand posted a discussion
The motor 4 output on my friend's Pixhawk seems to be dead. We tested it with multiple ESCs and servos just to be sure.He's setting up a quad, so I was considering taking the sketchy route and flashing X8 to use outputs 5-8, but before we resort to…
Jul 9, 2015
Izzy Brand replied to Tim Woodward's discussion How Fast Can My Quad Hit the Ground...Upside Down?
"It's interesting you mention this. I saw very similar behavior from my own quad recently. It went fully inverted, and maintained throttle into a tree and then the ground. Just like in your situation, I've never had any issues in any mode other than…"
Jul 2, 2015
Izzy Brand replied to Izzy Brand's discussion Front flip while mapping??? --> CRASH
"I agree, it was irresponsible. I had had successful and much longer mapping missions in the past, so I had some faith in the craft.

When you say, "fall apart," do you mean physically? The frame was actually fine upon recovery, so I don't think…"
Jul 2, 2015
Izzy Brand posted a discussion
No idea what went wrong today (which is why I'm here). I have (had) this awesome Alien 560 quadcopter. As soon as I put it up in the air for the maiden, it flew beautifully. I actually flew an auto mission my very second flight.Anyways, I've put…
Jun 30, 2015
Izzy Brand replied to Izzy Brand's discussion Strange Behavior in Mapping Mission (alt changes)
"And here is the aircraft itself:

Specs:18-20 minute flight time

Motor: SUNNYSKY X4108S 690KV
ESC: Afro 30A OPTO
Prop: 12x4.5 Gemfan
Battery: Zippy 5800mAh 4s 25C
Airframe: Alien 560 Folding Kit
Flight Controller: 3DR Pixhawk"
Jun 23, 2015
Izzy Brand replied to Izzy Brand's discussion Strange Behavior in Mapping Mission (alt changes)
"I've attached the telemetry log and KMZ if that helps."
Jun 22, 2015
Izzy Brand posted a discussion
I just put together a (gorgeous) Alien 560 quad last night with a Pixhawk. This morning I decided to fly a mapping mission, and the quad performed very well, but there were a few hiccups in the mission.Even though the entire mission was at 50m, at…
Jun 22, 2015
Izzy Brand replied to Izzy Brand's discussion Climb to Target Altitude in between WPs?
"After updating today, I found a new command in APM Planner which I hadn't seen last time I used it. "Change Alt & Continue." Hopefully that does what I have in mind...?"
Apr 6, 2015
Izzy Brand posted a discussion
Here's a quick mission planning question. So I have a fixed wing aircraft and I'd like to plan a mission in which the aircraft climbs to a target altitude and then performs a servo action. From testing, I found that if I set one waypoint at 30m and…
Apr 6, 2015