Quad.Net Quadrocopter for .NETMF
#61
Posted 27 January 2011 - 07:20 PM
#62
Posted 27 January 2011 - 07:22 PM
heres my ideas hardware wise, would like some opinions, you mentioned using a better BEC, so I have taken it off the list open for your suggestions, keeping in mind i am trying to be very modular is the reason for the component shield
Motor 6 $6.00 $36.00 http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=5354&aff=104834 ESC 6 $9.23 $55.38 http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=6458&Product_Name=Hobbyking_SS_Series_25-30A_ESC_%28card_programmable%29&aff=104834 Props 8 $4.00 $32.00 https://www.mikrocontroller.com/index.php?main_page=product_info&cPath=75&products_id=256&zenid=43fb24fa5fbee9bca99cea5ee6462e48 Battery 3 $19.00 $57.00 http://hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=7634 Battery Charger 1 $25.00 $25.00 http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=2055 Frame 1 $90.00 $90.00 http://quadframe.com/html/quad002.html RC Transmitter 1 $60.00 $60.00 http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8992 ITG3200/ADXL345 1 $65.00 $65.00 http://www.sparkfun.com/products/10321 Component Shield 1 $22.00 $22.00 http://www.robotshop.ca/ghi-component-shield-v2.html JST Sensor Cable 20 $1.76 $35.20 http://www.robotshop.ca/inex-jst3aa-sensor-cable.html
#63
Posted 27 January 2011 - 08:29 PM
Oh sorry I was under the impression you had been flying already.
I am, but not on the experimental quad. I have other quads that are not so open to experimentation...
#64
Posted 28 January 2011 - 03:55 AM
Whoa a month, i guess i need to stop procrastinating......
heres my ideas hardware wise, would like some opinions, you mentioned using a better BEC, so I have taken it off the list open for your suggestions, keeping in mind i am trying to be very modular is the reason for the component shield
Motor 6 $6.00 $36.00 http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=5354&aff=104834 ESC 6 $9.23 $55.38 http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=6458&Product_Name=Hobbyking_SS_Series_25-30A_ESC_%28card_programmable%29&aff=104834 Props 8 $4.00 $32.00 https://www.mikrocontroller.com/index.php?main_page=product_info&cPath=75&products_id=256&zenid=43fb24fa5fbee9bca99cea5ee6462e48 Battery 3 $19.00 $57.00 http://hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=7634 Battery Charger 1 $25.00 $25.00 http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=2055 Frame 1 $90.00 $90.00 http://quadframe.com/html/quad002.html RC Transmitter 1 $60.00 $60.00 http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8992 ITG3200/ADXL345 1 $65.00 $65.00 http://www.sparkfun.com/products/10321 Component Shield 1 $22.00 $22.00 http://www.robotshop.ca/ghi-component-shield-v2.html JST Sensor Cable 20 $1.76 $35.20 http://www.robotshop.ca/inex-jst3aa-sensor-cable.html
Sorry for the double post - however my other post is so off topic it's not funny, and I worried you wouldn't read to this part.
I'd like to make a few suggestions to you - I've been flying for 15 years, and worked for several years in a hobby shop for fun as a second job. These are of course just suggestions.
For your charger, get one of these: http://www.hobbyking...=7028&aff=19701
This will give you far more options for charging batteries, which is safer - and more versatile. I bought one of these for my father-in-law-to-be for christmas. This will let you charge many different types of battery and also discharge/cycle batteries as well which can be very handy.
For your transmitter, if you don't need 9 channels get one of these: http://www.hobbyking...=9041&aff=19701 with http://www.hobbyking...idProduct=9043. This is the basic 6ch tx and usb cable. The USB cable is just a SiLabs VCP. The controller can then be programmed by software on a PC. The software is rather ugly and not very good, but it works and will save you a bunch of money.
I assume you're getting 2 motors as spares? Those are pretty crappy and you in my experience you may have a dud in the 6, so that's a good idea.
ESC's - I'd suggest http://www.hobbyking...=4312&aff=19701 - I don't trust any ESC's except Turnigy Plush/Sentry honestly. I've had a couple of planes go down in a ball of smoke (or fire) because an ESC failed and caught fire - or the PCB turned to ash from the heat. I have pictures somewhere at home heh. Your motors max draw is only 14.5A, so 30A esc's are just extra weight. A Turnigy 18A plush has Fairchild HEXFET's rated to about 22A.
Battery should be fine, that will allow you 20A/motor in a quad copter. If you're building a Hexcopter you'll need a bigger battery, or higher C rating.
Frame: That looks pretty darn tacky for $90 - i'd want a lot more for my $90 than that. I've seen similar to that for about $40. Chris Seto can probably point you at a couple of basic stick type ones for cheap, i know he did a lot of research into them a couple of months back. Personally, I'd go for something like: http://www.foxtechfp...rame-p-196.html - these are plywood which is easy to repair and it's built extremely strong - they'll take some pretty big crashes
#65
Posted 28 January 2011 - 04:06 AM
#66
Posted 28 January 2011 - 04:22 AM
Great community we have here.
Is it kind of a weird collision between an incredibly sophisticated language (C#) and development environment (VS), used to build some of the most sophisticated, multi-national, billion-dollar systems in the world, and all the baggage that comes with that sort of thing...
... and trying to get a toy helicopter to fly!
PLEASE PLEASE PLEASE keep going! Make it fly!
#67
Posted 28 January 2011 - 04:48 AM
Is it kind of a weird collision between an incredibly sophisticated language (C#) and development environment (VS), used to build some of the most sophisticated, multi-national, billion-dollar systems in the world, and all the baggage that comes with that sort of thing...
... and trying to get a toy helicopter to fly!
PLEASE PLEASE PLEASE keep going! Make it fly!
It's actually not so much a toy helicopter as it is a high precision tool. Remember, these things can sell for tens of thousands and be used for everything from swarm development (RE: skynet) to aerial camera rigs.
There's a reason I don't fancy to fly full scale helicopters though, and that's because anything that flies on rotary wings is very inherently unstable and requires aggressive control to maintain stability, unlike a fixed wing aircraft that will happily fly along without any input. When you are flying an airplane, you are there to keep it flying where you think it should go. When you are flying a helicopter, you are there to keep it from crashing and destroying itself.
Control theory can be a very complicated and dangerous thing if not done properly. It is of a very high priority to make sure you have a stable software architecture and control loop if you want your autopilot to competently fly the aircraft.
Companies like Air Hogs have deluded just how complicated rotary wing aircraft are to stabilize by putting massive amounts of money into R&D for making toys that perform very well under a very limited set of circumstances. Those perform well, but they are also very limited. A quad is a high performance aircraft, not a toy.
#68
Posted 28 January 2011 - 04:59 AM
#69
Posted 02 February 2011 - 05:44 AM
4x TURNIGY Sentry 25amp Speed Controller
4x Turnigy 2217 20turn 860kv 22A Outrunner
2x Woven Carbon Fiber Sheet 300x100 (2.0MM Thick)
2x Carbon Fiber Square Tube 750x10.5mm
to build a quadcopter from.
I only really need one CF sheet, however the second gives me spares lol.
#70
Posted 02 February 2011 - 05:55 AM
#71
Posted 02 February 2011 - 06:38 AM
#72
Posted 02 February 2011 - 07:21 AM
#73
Posted 02 February 2011 - 01:02 PM
#74
Posted 02 February 2011 - 07:58 PM
#76
Posted 02 February 2011 - 08:40 PM
#77
Posted 02 February 2011 - 08:51 PM
#78
Posted 02 February 2011 - 09:21 PM
#79
Posted 02 February 2011 - 09:31 PM
#80
Posted 02 February 2011 - 09:39 PM
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