"@Andrew Lynch,
Maybe. Here, I added a question to the robotics stack exchange, let's see how that goes.
http://robotics.stackexchange.com/questions/1378/how-to-tell-when-an-ardupilot-has-finished-initialising-its-gyros-without-refe"
Chris Gough's Discussions
bad attitude from a stationary ArduCopter
Started this discussion. Last reply by Chris Gough Jan 4, 2012. 5 Replies 0 Likes
Background: My first ArduCopter (APM1/oilpan, mag, no sonar, ublox GPS, xbee 900, hoverthings X450 quad frame, 1000 Kv motors, 30A escs, 10*4.7 props, 4Ah 35C 1P4S LiPo, X cross configuration, code…Continue
Chris Gough's Page
Latest Activity
Chris Gough commented on Kevin Hester's blog post Please do three small things to help create drones.stackexchange.comChris Gough commented on Kevin Hester's blog post Please do three small things to help create drones.stackexchange.com"This is an interesting idea, I'm following... But how does this compliment/work with the existing DIYDrones forum format? Is it splitting the community, in essence a fork? Stack exchange has some great features, if it works out it could be a…"
Chris Gough replied to Rafael Córdoba's discussion How can I set up the PID's? in the group ArduCopter User Group"Did you see this?
http://diydrones.com/forum/topics/arducopter-tuning-guide
"
Chris Gough replied to Rafael Córdoba's discussion How can I set up the PID's? in the group ArduCopter User Group"http://plane.ardupilot.com/wiki/arduplane-parameters/
That's new/draft documentation but best yet."
Chris Gough commented on Sam Short's blog post Another example of how to conduct commercial drone ops"Here is a hint of their conditions:
Our specially designed aircraft operate at low noise levels and are capable
of flying at altitudes of up to 121 metres (400feet). Unlike traditional
helicopters or fixed wing aircraft we are also able to get…"
Chris Gough commented on Sam Short's blog post Another example of how to conduct commercial drone ops"Hi Darrell,
They don't, they have an operators certificate.
http://www.coptercam.com.au/wp-content/uploads/2012/04/CC_OC.jpg
I would be very interested to read schedules 1 and 2 of the certificate (not published as far as i can tell). They…"
Chris Gough commented on Chris Anderson's group ArduCopter User Group"@Shayam, if you want to experiment with quaternions, DCM, euler angles, etc. you might want to check out the various pluggable AHRS subsystems in paparazzi.
http://paparazzi.enac.fr/wiki/Subsystem/ahrs"
Chris Gough replied to David Anders's discussion The flying quad and flying higher props... in the group ArduCopter User Group"There's red loctite and blue loctite at my local shop. The red one is supposed to be permanent, I dont use it. The blue one is semi-permanent, that's the one to use. At a pinch, nail varnish works too. You can thin it with acetone if…"
Chris Gough replied to Randy Brazeau's discussion What is a "Pilot"? in the group ArduCopter User Group"In AU, "pilot in command" has a legal definition. It's the person responsible (IANAL, that's just my understanding of regulation CASA 101).
It's not a badge of honor. The only time you fly and are not the pilot is wham you…"
Chris Gough replied to Stefan Gofferje's discussion Multi-rotor endurance factors? in the group ArduCopter User Group"Ok, I think I get it now. It takes no work at all to hover, if you are perched on a pole, because no mass is getting accelerating (despite the force of gravity). Poles are not using power to stand up, the sled/winch acceleration analogy for hovering…"
Chris Gough replied to Stefan Gofferje's discussion Multi-rotor endurance factors? in the group ArduCopter User Group"From disk loading,
http://en.m.wikipedia.org/wiki/Disk_loading#section_3
I see that power required to hover is thrust * induced velocity (of downwash), which is a function of disk loading (with an exponent, due to MV**2/2 I suspect) I can see…"
Chris Gough replied to Stefan Gofferje's discussion Multi-rotor endurance factors? in the group ArduCopter User Group"Ok, what's the diameter of an ideal rotor that consumes 48 Watts when lifting 1Kg?
What is the power consumption of an ideal rotor lifting 1Kg with, say 1Km diameter?"
Chris Gough replied to Stefan Gofferje's discussion Multi-rotor endurance factors? in the group ArduCopter User Group"Yes, that's how the 48W/Kg is spent. Of course with the heat, sound and turbulence produced it would cost more than 48W/Kg to hover, but that's an ideal.
I may have made a mistake, and if so I would like to see it corrected. High school…"
Chris Gough replied to Stefan Gofferje's discussion Multi-rotor endurance factors? in the group ArduCopter User Group"@Brad Hughey, no I didn't forget mass - acceleration due to gravity is the same at any (non-astronomical) mass. Specific energy (e.g. 200 W/H per Kg) of LiPo batteries is the same for any size/quantity of them. It's like energy density,…"
Chris Gough replied to Stefan Gofferje's discussion Multi-rotor endurance factors? in the group ArduCopter User Group"I don't think it matters which one you monitor; time, volts or current - they all require knowing the characteristics of your system. The safest thing would be to measure both current and voltage over time, so that you know work done. Then you…"
Chris Gough replied to Stefan Gofferje's discussion Multi-rotor endurance factors? in the group ArduCopter User Group"I agree, my 25% figure "battery capacity not used" will still give the LiPos quite a lot of damage. I generally use high "C" LiPos (e.g. Turnigy NanoTech), because their lower internal resistance means less voltage drop at high…"
Profile Information
- About Me:
- UAV enthusiast at large, software developer by day, serial entreprenur by night, father of 2.
- Tell us a bit about your UAV interest
- Been into fixed-wing foam with Paparazzi for a couple of years. Currently dabbling in multicopters, learning ArduPilot as part in the CanberraUAV team (2012 Out Back Challenge, here we come).
http://www.CanberraUAV.com/
I also sell Paparazzi hardware from my secret underground lair:
http://aerofu.com/
Chris Gough's Blog
ArduCopter novice learns from pymavlink tools (and mistakes)
Posted on January 6, 2012 at 7:30am 6 Comments 2 Likes
If you are one of the 21 people that read my discussion post earlier this week, then you will know I'm an ArduCopter novice making beginners mistakes, and using pymavlink tools to interface my system.…
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