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Quadcopters


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Activity Feed

Nicholas Bratton replied to Gonzalo Garat's discussion APM 3.2 QUADCOPTER Err: EKF_CHECK-2 / Err: FAILSAFE_ EKF-1
"Hi All,

I've had a similar issue where my quad wouldn't respond and it ended up slamming into the side of a concrete building right before narrowly missing a parking lot of cars. Luckily nothing or nobody else was hurt but the quad. The 3 axis…"
Apr 16, 2016
Nicholas Bratton posted a blog post
Hi All, here is my 250 FPV Racer I designed and 3D printed. It uses a mini APM as the flight controller and also has a GPS and telemetry for missions. The arms are 15mm carbon tubes with SN20A esc's in the arms. The files can be downloaded…
Jan 14, 2016
Nicholas Bratton commented on keeyen pang's blog post 100 KM Mapping / Video conservationdrones
"@ Keeyen 

The power requirement to spin the propeller will be the same. As the cell voltage drops the current draw will have to increase in order to meet the same amount of power. P = I x V"
Jan 13, 2016
Nicholas Bratton commented on Nicholas Bratton's blog post 3D Printed RFD900+ JR Module
"I use Simplify3D to slice my files. It fills in all the overhangs over a specified angle with support and the supports are easily removed. Here is an example video of removing the supports. https://www.youtube.com/watch?v=lHqRY4mGJIM&t=6m0s "
Dec 22, 2015
Nicholas Bratton commented on Nicholas Bratton's blog post 3D Printed RFD900+ JR Module
"I previously had the RFD900 packaged in my 9xr and didn't notice any problems though the air volume is less in a JR module. Regardless, more cooling is better than less. There is a ventilated cover on Thingiverse now. Cheers."
Dec 21, 2015
Nicholas Bratton posted a blog post
Hi all, I designed a mount for the RFD900+ which goes in a JR module bay so that I can have long range telemetry with a bluetooth bridge for my smartphone / computer. The module uses the transmitter's battery as a power source. Also, you need to…
Dec 21, 2015
Nicholas Bratton replied to Rolf Blomgren's discussion APM MavLink to FrSky X8R S.Port converter
"Thanks Kevin! It's now working! Many hours of frustration and such a simple fix. Thanks!"
Dec 21, 2015
Nicholas Bratton replied to Rolf Blomgren's discussion APM MavLink to FrSky X8R S.Port converter
"I'm getting the same error
Arduino: 1.6.6 (Windows 7), TD: 1.26, Board: "Teensy 3.2 / 3.1, Serial, 96 MHz optimized (overclock), US English"
Build options changed, rebuilding allFrSkySPortTelemetry:116: error: token "Â" is not valid in preprocessor…"
Dec 19, 2015
Nicholas Bratton replied to Randy's discussion AC-3.1 autotune support discussion
"Hi Leonard, 
I did a cogging test with 12" props and the quadcopter bolted to a weighted down tripod. Turns out there are two hardware issues. The first issue was that one of the motors had a loose stator that would rotate until the wires stopped…"
Apr 27, 2015
Nicholas Bratton replied to Randy's discussion AC-3.1 autotune support discussion
"Hi Guys, 

I'm a little late to the party but I hope I can still get some help on why my quad crashed twice during autotune. I attached the log files but I'm still learning how to use Mission Planner. 

A little background, I completed autotune fine…"
Apr 22, 2015
Nicholas Bratton commented on Dave Giles's blog post Drone delivering asparagus to Dutch restaurant crashes and bursts into flames
"Looks like a shift in the COG maybe caused the crash? If I had to guess he probably didn't secure the battery well after changing it. Also, looks like the battery was cut with the propellers as the motors were still spinning when it was upside down…"
Apr 16, 2015