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  • Okan Zamanoglu
  • vv
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  • Donald Wallace
  • DroneNerd
  • David
  • Scott Trinkner
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  • Rhett Walker
  • Dave Coultish
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  • codemaster
  • David spencer
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Joel's Groups

Joel's Discussions

Selling a bunch of Drone / RC stuff

Started this discussion. Last reply by Joel Sep 7, 2016. 8 Replies

For sale: - 3dr GPS module- Ardupilot 2.6 autopilot- Hexa Frame(with a few broken legs)- diydrones Motors/props (860kv motor)- Spektrum DX6 transmitter- Spektrum AR6210 reciever with satellite-…Continue

Where to buy diydrones sonar for ardupilot 2.6?

Started this discussion. Last reply by Joel Apr 23, 2016. 2 Replies

Hi, the store doesn't carry the diydrones sonar sensor any more.Does anyone have a link where I could purchase it? Thanks.Continue

Tags: sonar

A few questions before my first flight.

Started this discussion. Last reply by Joel Mar 10, 2016. 2 Replies

Hi, I just purchased a pixhawk, but decided I'd go ahead and try out my APM2.6 first since it's been collecting dust. I'm using the 3dr Hexa frame. I've flow rc planes and variable pitch…Continue

Where can I find the 3d robotics 20amp ESC?

Started this discussion. Last reply by Joel Mar 2, 2016. 2 Replies

Hi, I need another one of these 20amp 3d robotics ESC's(see image).Does anyone know where I can order one or find the equivolent? It reads DDT-30A-20. Any ideas?…Continue


Joel's Page

Profile Information

Please tell us a bit about your UAV interest
Plenty of experience with RC planes and helicopters. New to autopilots and multi rotor copters.
Parkersburg, wv

Joel's Blog

Theoretical limit of solar cell effeciency probably broken

Posted on March 25, 2013 at 3:30am 4 Comments

"A simple, single nanowire crystal is capable of super-concentrating the intensity of the sunlight that it is exposed to up to a factor of 15, researchers from the Niels Bohr Institute have discovered. The surprising discovery means that the assumed limit to solar cell efficiency, the “Shockley-Queisser Limit,” can likely be increased. The discovery should…


Dutch engineer is the first man in history to fly like a bird with self- built wings

Posted on March 20, 2012 at 5:00pm 78 Comments

The Hague, Netherlands, 20th March 2012


Dutch engineer is the first man in history to fly…


Elbit Systems Successfully Completes Skylark I-LE UAS Test Flight Using Horizon Fuel Cell

Posted on December 7, 2010 at 8:00am 2 Comments

Elbit Systems Successfully Completes Skylark(r) I-LE UAS Test Flight with Horizon's New AEROPAK Fuel Cell Power System Skylark(r) I-LE is one of less than a handful of UAS to perform a fully operational test flight using the AEROPAK fuel cell, including an operational payload, take-off and recovery

Singapore, December 7, 2010 -Horizon Energy Systems announced the successful test flight of its AEROPAK fuel cell power system onboard Elbit Systems Skylark(r) I-LE UAS (Unmanned Aircraft… Continue

H-Cell 2.0 Hydrogyn fuel cell hybrid power-train for RC models

Posted on September 20, 2010 at 2:35pm 25 Comments

This might interest some of you.

A hydrogen fuel cell hybrid power-train for 1/10 scale model hobby RC. The H-Cell 2.0 can be connected to almost any RC platform and will provide continuous power to recharge the on-board batteries. Using this hybrid system it is possible to increase the run time of RC vehicles by more than four times!

When the solar panel option is…


Comment Wall (1 comment)

At 11:08pm on April 7, 2012, David said…

Joel... I don't know why you are ignoring my email.... You were supposed to send the USB device over a week ago... I have not been able to test the APM2.0 without it and have not received a comment back from you.... PLEASE SEND IT RIGHT AWAY....  Thanks.

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