"Hi Joe,
Is it true that using an adapter for Voightlander on the Samsung NX means will lose infinity focus?
"
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Gareth Rens
- Male
- Johannesburg
- South Africa
- Blog Posts (17)
- Discussions (405)
- Groups (4)
- Photos (14)
- Photo Albums
- Videos
Gareth Rens's Groups
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DIYDrones - CNC Project
137 members
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South African DIY Drones…
57 members
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ArduCopter Evolution Team
142 members
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ArduCopter User Group
1353 members
Gareth Rens's Discussions
MikroKopter Oktokopter Carbon Fibre base plates for sale or to swap
Started this discussion. Last reply by Don LeRoi Jun 22, 2012. 1 Reply 0 Likes
For sale or to swap for WHY?$20…Continue
UAV for photogrammetry / surveys
Started this discussion. Last reply by Paul May 13. 32 Replies 7 Likes
Hi EveryoneIm putting together a UAV for aerial surveying using stereo photogrammetry.Id like to get some input for the experts before going ahead.My plan is to buy a high wing trainer coupled with…Continue
In-flight PID tuning using ch6
Started this discussion. Last reply by Gareth Rens May 19, 2012. 6 Replies 0 Likes
What are the definitions for the TUNE Pids???I cant for the life of me find them in the manual!I know TUNE 1 is for tuning STAB_P.But what are the other numers???Thanks :)Continue
Flipping problem with latest MP code
Started this discussion. Last reply by Gareth Rens May 18, 2012. 1 Reply 0 Likes
Copter was flying fine.Flashed latest firmware with latest MP.Startup and arming goes fine.But when the copter lifts a few cm off the ground and i give roll to the right, it flips instantly to the…Continue
Gareth Rens's Page
Latest Activity
Wayne Upfold replied to Gareth Rens's discussion UAV for photogrammetry / surveys"I use Photomodeler and canon eos mirror less in one drone and a canon sx260 in the other, results are consistent, I have never had a problem with accuracy, if your results with photomodeler are inaccurate its because you doing something wrong, when…"
jeff delvecchio commented on Gareth Rens's blog post Backup system for BEC"OK thanks Dean!
the APM2.5 has a very odd power system. there are to date 20,134 different ways to run power to it. LOL"
Dean Franks commented on Gareth Rens's blog post Backup system for BEC"Sorry, the filename is correct but I copied the link from the previous post.
Version 2 UAVPWR file
I don't know what the APM 2.5 power system looks like, we use a custom autopilot."
jeff delvecchio commented on Gareth Rens's blog post Backup system for BEC"hey dean... the package looks like its UAVPWR (not UAVPWR2) i think im looking at what you made before LOL
thanks for the advice on the LC filtering. Does the APM2.5 have an lc filter and LDO when i apply 5V into one of the APM's input pins or…"
Dean Franks commented on Gareth Rens's blog post Backup system for BEC"Design complete and files uploaded to http://71.6.151.114/pub/UAVPWR2.zip
Includes LDO for 5V regulated output, LC filter in input to LDO, mounting holes and BOM file with exact recommended part numbers.
Notes:
I don't think it will do…"
jeff delvecchio commented on Gareth Rens's blog post Backup system for BEC"hi dean... that sounds great.
I just realized that my LC filter wont handle the load of servos (1A max). Can you advise me on what kind of filter i can build that can handle the load... or do i even need one since you are building one into the new…"
Dean Franks commented on Gareth Rens's blog post Backup system for BEC"Jeff, sorry, I forgot about that. I will post another board in the morning with an additional regulated 5v output using the OKI switching regulator and an additional LC filter on the output to limit noise into the digital/sensor…"
jeff delvecchio commented on Gareth Rens's blog post Backup system for BEC"thanks dean! im gonna look this over. looks like were not using the 2 output idea then, right? i wish i had one idea of what your design means... electronics theory mostly eludes me.
is it ok if i share your design on other forums ( crediting…"
Gustav Kuhn commented on Gareth Rens's blog post Backup system for BEC"I humbly suggest again to look at just using diodes to OR your supplies/batteries ?
Get practical, take a diode like 1N5819, run 500mA through it, measure the drop.
And it can easily handle peak currents up to 10 A ! Looking at Dean's circuit,…"
Dean Franks commented on Gareth Rens's blog post Backup system for BEC"Design complete and files uploaded to http://71.6.151.114/pub/UAVPWR.zip
Contains PCB Artist (free download) CAD files and PDFs of schematic and board layers.
Dean"
jeff delvecchio commented on Gareth Rens's blog post Backup system for BEC"hi dean....
just found this... based on a LTC 4416.
http://www.rcgroups.com/forums/showpost.php?p=24509775&postcount=33
not sure if this helps.
jeff"
jeff delvecchio commented on Gareth Rens's blog post Backup system for BEC"the 4412s do look better.. way easier to solder to i suspect. Ill order them up and send them to you if you want. theyre only $2 direct form linear."
Dean Franks commented on Gareth Rens's blog post Backup system for BEC"It would not be wise to use diode drop to generate a regulated 5V anyway, as the drop depends on the current flow across the diode and can be much smaller than the rated 500 or 700mv value at low currents.
It would seem to be a good idea to put a 5V…"
jeff delvecchio commented on Gareth Rens's blog post Backup system for BEC"yes the guy who made the post showed them switching over with no reboots. I am thinking now that the SBECs I have will output 6.4V or so and even a 700mv drop would still be to high for my APM 2.5.
Thats why I was interested in the 4415... only…"
Dean Franks commented on Gareth Rens's blog post Backup system for BEC"I have a tube of LTC1473's which we no longer use in product which looks like a good candidate for the board. It does require a small inductor to generate the gate drive for the NFETS, but that is a cheap part. I will post a…"
Profile Information
- About Me:
- I am a patron of the Sciences
- Tell us a bit about your UAV interest
- I am interested in anthing that has switches, buttons, gears or knobs...
I run a local south african drone forum: sadrones.co.za
And have started an aerial photography company called RAD Aerial Photography. We Also sell multi-rotors on www.stuffinc.co.za
- Hometown:
- Vereeniging, Gauteng
Gareth Rens's Photos
Gareth Rens's Blog
RAD Aerials first video edit
Posted on June 6, 2012 at 12:44am 6 Comments 1 Like
Not too bad for my first edit. Used premier (my first time)
Tried uploading it to vimeo for copyright reasons, but no go.
So I uploaded to you tube. The only country that its blocked in is…
Continue APM2 conversion to Naza
Posted on May 27, 2012 at 12:06am 39 Comments 3 Likes
Morning everyone!
So i decided to try the whole Dji thing. It took all of about 20mins to swop the APM2 with the Naza.
The setup is as simple as it gets. That took no more than 10 mins.
After installing the hardware and software I took it outside and attempted the first flight.
All I have to say is wow! A truly awesome…
ContinueComment Wall (4 comments)
- At 6:01pm on January 13, 2012,
John Campen said… Thanks for your help on the fail safe setting Gareth. I see that this was updated last week on the wiki document page for fail safe by Jason, but he has entered the same value for two functions for TH_FS_ACTION as value 1 which i think is an error. The two functions are either to reinstate the origination mission once signal is restored or to RTL even if connection is restored. I have got mine now set at 1 for both THFS and THFSA but Im yet to know what it will active if ti kicks in. Do you what are the correct values for THS ACTION?
- At 11:26pm on January 13, 2012,
Gareth Rens said… Iv pm'd Jason to ask about the typo.
Testing is fairly easy. Arm the copter without props (needs to have GPS lock)
Run up the motors in STAB mode and turn the transmitter off. If the motors die, the failsafe didnt work.
You can also see if it works in APM planner if you connected via xbee. The mode will change from STAB to RTL if you turn off the transmitter.
G:)
- At 11:44pm on January 13, 2012, Gareth Rens said…
Wiki has been updated :)
- At 11:05pm on January 24, 2012, nick said…
Gareth, I missed your message a couple of minutes ago but I am back on now.
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