"Hello Chris,
Sorry to interrupt but did i get this straight? isn't possible to get the live video on Planner via Xbee? Sorry i am kind of noob. I'm about to buy the camera but i was planning to use xbee for transmission.
thank you a…"
Craig Evert's Discussions
Radio Pitch Reversal
Started this discussion. Last reply by jasonshort Aug 8, 2011. 1 Reply 0 Likes
In simple and stabilize mode (have not tried anything else yet) all tests are good - quad resists moving it from horizontal and left and right stick, yaw input and vertical input from radio all…Continue
Flight modes without gps
Started this discussion. Last reply by Ruben Wijnhoven Nov 26, 2011. 4 Replies 0 Likes
I recently posted that my quad was acting strangely in simple mode.Basically it wold move left and right on commands from the radio but reversed backwards and forwards.I forgot to mention that I was…Continue
It's alive but...
Started Aug 7, 2011 0 Replies 0 Likes
Thanks to everyone who contributed to this effort. My quad flew today for the first timeEverything checked our except that in simple mode input from my radio was interpreted incorrectly. Left is…Continue
Power Distribution Alternative
Started this discussion. Last reply by Mike O Oct 13, 2011. 13 Replies 0 Likes
Rather than using a Power Distribution Board, is there anything wrong with the following setup?: Join all ESC positive power wires together and to the positive of the battery. Join all ESC…Continue
Craig Evert's Page
Latest Activity
Alexander Costa replied to Craig Evert's discussion APM XBee and Video. Open Book, no constraints!!! (please take the time to respond)Craig Evert commented on jasonshort's blog post ArduBalance sneak preview"How uncanny. I have been searching for a way to use my apm1 in a balance bot. Please tel me the code will work on a 128.
Can't wait for you to share!!"
Wesley Chuen replied to Craig Evert's discussion Warning! Rebuild any pre-assembled HK Helis"The blade and the wearable bearing inside the feathering shaft assembly are the most common problem on this heli, HK or any brand. Mine is an authentic Align 450 and the first time I got it, the blade holder/feathering shaft assembly was very…"
420choky replied to Craig Evert's discussion Warning! Rebuild any pre-assembled HK Helis"defeating the RTF ,,, always build your own ,.,. lol .. cheaper ,, but man glad no one got hurt"
Ruben Wijnhoven replied to Craig Evert's discussion Flight modes without gps"On what firmware were you? Beceause i am noticing strange things to. And I am trying to finde my issue. I to had my copter acting realy strange in simple mode as if my rc channel was reversed al of the sudden but after switching of simple it was…"
Mike O replied to Craig Evert's discussion Power Distribution Alternative"The disti board is note strictly necessary, but soldering 4 power cables together on a Deans connector requires a little experience or more hands than most of us have :-) I did it though, so it's not impossible.
Each ESC provides a +5V…"
bGatti replied to Craig Evert's discussion Power Distribution Alternative"Dean Kaman took out a patent on full redundancy (including double-wound motors) for the Segway. If you read that patent, you'll have a primer on Redundancy in Batt/ESC/BLDM systems.
The problem with ESC failure, is that too often Mosfets…"
basshead replied to Craig Evert's discussion Power Distribution Alternative"I am just trying to make redundant all I can without spending any extra time or money. And hooking up all my BEC's to the arduino seemed like a good idea. From what I have seen, hardware failure in the esc's and motors seems to be a big…"
bGatti replied to Craig Evert's discussion Power Distribution Alternative"This discussion (linked) has a few anecdotal (my copter fell out of the sky - which I expect is a story many many people could tell in one form or another), and proper electronic analysis which always reaches the same conclusion:
It's fine -…"
3D RoboticsChris Anderson replied to Craig Evert's discussion Power Distribution Alternative
"Electrons flow wherever there is a gradient. If the ESCs aren't perfectly matched (and they often aren't), the high voltage one ends up trying to reverse the current flow in the lower voltage ones. Sometimes that's no problem,…"
basshead replied to Craig Evert's discussion Power Distribution Alternative"I dont get how there would be a current loop, wouldnt battery drain be a function of amps? Its not like the arduino is going to draw more amps because its connected to more sources right? If I wire 2 5v batteries in paralell and connect them to my…"
bGatti replied to Craig Evert's discussion Power Distribution Alternative"Having looked at the circuits of various Regulators (BEC) switched or unswitched - I can't find anything which suggests a problem with direct parallelisation (tm).
I would challenge this claim until demonstrated by experiment - however -…"
Allen Babb replied to Craig Evert's discussion Power Distribution Alternative"And since nothing electronic is ever 100% exact, you'll always get some sort of current loop.
If you really want redundancy, then you'll have to come up with some sort of relay that will switch between the main BEC and the backup…"
3D RoboticsChris Anderson replied to Craig Evert's discussion Power Distribution Alternative
"If they aren't outputting EXACTLY the same voltage, you'll get a current loop between them that will drain your battery super fast."
basshead replied to Craig Evert's discussion Power Distribution Alternative"Whats wrong with just plugging in 4+ ubec's for redundancy... On my y6 thats what im doing."
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- About Me:
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Motor Racing Crazy
Computer Geek
Electric Powered everything crazy.
Own too many toys (according to wife)
- Tell us a bit about your UAV interest
- Have RC planes, cars and copters.
Own a Lego NXT
Love the physics behind flight and automated control.
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