Josh Potter
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Josh Potter's Groups

Josh Potter's Discussions

Arduplane without a compass?

Started this discussion. Last reply by wolfgang Sep 17, 2013. 3 Replies

Can I safely fly arduplane without a compass?  If yes, what won't work as well without a compass?  I have an APM 2.0 with a bad internal compass and it won't accept an external compass (even after…Continue

Disabling the internal compass on 2.0 APM hardware by removing the HMC5883L

Started this discussion. Last reply by Josh Potter Sep 12, 2013. 3 Replies

The wiki said to cut the trace which turns out to be no easy feat.  I did that and verified that the internal no longer working but I'm getting some odd random problems that make me think it's not a…Continue

Are you interested in coding arducopter improvements?

Started this discussion. Last reply by criro1999 Aug 20, 2013. 2 Replies

Robert has generously offered to give an overview of the code and what modules do what via Skype or some form of easy to use conference system.  I'm sure I'm not the only one who is interested in…Continue

500 heli on APM 3.0.0 code flying great!

Started this discussion. Last reply by Rob_Lefebvre Sep 15, 2013. 106 Replies

I just had my first stable loiter yesterday after running compasmot and it was very impressive.  Tuning wasn't very difficult for the most part and the biggest barrier we have with getting more helis…Continue

 

Josh Potter's Page

Latest Activity

Josh Potter replied to Randy's discussion ArduCopter-3.2 beta testing
"I had a crash here while about 30 meters up. The quad tips to the left and could never full recover.  I don't see a voltage problem, and the failsafe was triggered because I had turned the RX off earlier in the flight.  Can anyone…"
8 minutes ago
Josh Potter replied to Jeffrey Scott Atkins's discussion Naza Fly Away
"The new autotune feature on APM code is nothing short of amazing.  Getting a solid setup is much simpler than it used to be with the APM code."
17 hours ago
Josh Potter commented on Rob_Lefebvre's blog post Arducopter Flies Gas Powered Helicopter
"Sorry to hear about the crash, but you took away some good information that will make things better for everyone in the future."
Sep 22
Josh Potter commented on Rob_Lefebvre's blog post Arducopter Flies Gas Powered Helicopter
"I've always wanted to do a gas heli with arducopter.  You solve so many problems at once, flight time, payload, etc.  Amazing work well done!"
Sep 21
Josh Potter commented on Babis HatziIoannou's blog post ArduCopter RSSI voltage modification
"Saqib, it could be your APM code, but try mission planner instead of APM planner. "
Sep 19
Josh Potter commented on Babis HatziIoannou's blog post ArduCopter RSSI voltage modification
"Bill does have a good point; RSSI doesn't just lineally step down from 100% to 0% when you fly farther and farther away.  When you're flying near the end of your range your RSSI drops fast and quick; that extra resolution might be…"
Sep 17
Josh Potter commented on Babis HatziIoannou's blog post ArduCopter RSSI voltage modification
"Can you change it to 1.5 volts in the code?  You might want to check how it's written to make sure it will accept that. https://github.com/diydrones/ardupilot/blob/345d4353e531dc76f0a2230c370391de579988cc/ArduCopter/Parameters.pde //…"
Sep 17
Josh Potter commented on Josh Potter's blog post Measuring SWR (Standing Wave Ratio) on your antennas with a Daiwa CN-801
"I don't know if you'd call it cheap but ready made RC has some video 900MHz video tx's.  I think the professional answer would be to buy a signal generator, but I have no idea what one would cost or what type to buy. "
Jul 30
Jeff commented on Josh Potter's blog post Measuring SWR (Standing Wave Ratio) on your antennas with a Daiwa CN-801
"Thanks for the help Josh. Unfortunately the only 900mhz transmitter I have are the RFD900 and the 3DR radios.  Any ideas on a cheap 900mhz analog transmitter?"
Jul 30
Josh Potter commented on Josh Potter's blog post Measuring SWR (Standing Wave Ratio) on your antennas with a Daiwa CN-801
"Jeff,   Adding the attenuator should always make the forward power needle go down, however I'm sure how well you can test antennas with a digital brust like radio like the RFD900.  I would test your RFD900 antennas with an analog…"
Jul 30
Josh Potter commented on Dave Smith's blog post HobbyKing Releases the Bixler 3!
"Looks fun.  I like the camera hole at the front of the plane."
Jul 30
Jeff commented on Josh Potter's blog post Measuring SWR (Standing Wave Ratio) on your antennas with a Daiwa CN-801
"Hi Josh, Can you please explain to me how the 10db attenuator makes the forward power needle go up on the meter?  I actually purchased this same meter and a 10db attenuator and when I add the attenuator it makes the forward power needle go…"
Jul 29
Josh Potter commented on Chris Anderson's blog post Time: "Here's why so many drone pilots are getting in trouble" (they're not RC folks)
"Agreed 100%.  I don't know how we solve this problem."
Jul 22
Josh Potter commented on Roger Sollenberger's blog post DroneCon.org is live!
"Very informative.  Thanks for sharing this."
Jul 11
Josh Potter commented on Pedals2Paddles's blog post Woman who assaulted CT UAV operator given probabation that concludes with no criminal record or pusnishment
"I'm surprised they gave her such a light punishment for assaulting a minor. "
Jul 10
Josh Potter commented on Chris Anderson's blog post Greenpeace video imagines a future of robot bees, after the live ones are gone
"We've already had one Green Revolution, why not another?"
Jul 8

Profile Information

Please tell us a bit about your UAV interest
Flown/built helicopters for a while. Interested in building FPV search and recon based helis.

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Chris Anderson on Marketplace

Posted on March 8, 2013 at 8:08am 6 Comments

Kai Ryssdal with Marketplace went on site to meet with Chris Anderson at 3d Robotics to talk about drones. You can listen to the segment here. …

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Measuring SWR (Standing Wave Ratio) on your antennas with a Daiwa CN-801

Posted on February 12, 2013 at 6:36pm 13 Comments

SWR is one of those things that most people don't need to worry about.  However, when you start building your own antennas or need to get every mw of power out of your existing antennas, you might need to check/tune your SWR.

The…

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FPV antennas: Building True R/C style circular polarized antennas.

Posted on December 8, 2012 at 7:00am 11 Comments

I assume most of us know that circular polarized antennas are great for FPV video streams because they're good at rejecting out of phase signals.  Thankfully you can buy these most of these antennas now, and even better yet, you can make your own with a little bit of work.



Probably the most popular design is the clover leaf, however I always hated…

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Comment Wall (2 comments)

At 12:39pm on October 15, 2012, LanMark said…

hi Josh.. why no pics of your F450?? :)   I would love to share my APM config settings but I am not running APM at this time.. I run a Naza and a Wookong... I have been working 84 hour work weeks since March and so I figured I just didn't have time to mess around with APM just yet.. and I wanted to get to flying with as little free time as I have right now.

At 6:20pm on October 15, 2012, Josh Potter said…

I've been changing so much (and will again when I get new base, I haven't bothered taking any yet).  Right now I'm the king of velco and zip-ties.

Do you have an OSD  with your current setup?  How's your video reception with the Y antenna?  What are you running for your ground station?  I see you having a beefy video TX there, I'm still running a 150 mw.

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