Almost finished the Octo build and thought I would take some shots at dusk.

Quite pleased with how these have come out, the LEDs really set the Octo off nicely.

Views: 1716

Comment by Rob Bartlett on August 24, 2013 at 8:34am

Nice!  Thanks for sharing.

Comment by AKRCGUY on August 24, 2013 at 9:14am

Nice pics!

Comment by Morli on August 24, 2013 at 9:54am

Good Work. Pls tell us what , where, BOQ/spec/model of the Quad and all the stuff that is flying there( highly appreciated) in detail.Keep it up and good luck.

Comment by Boris Rabusic on August 24, 2013 at 12:29pm

one thing that I noticed.

You set FPV camera on a gimbal ?

That is not good since gimball will correct itself and you would not be able to 'feel' the octa.

Would you mind to share your motors/props/weight/flight time etc.

Comment by Tissy on August 24, 2013 at 2:40pm

Thank you for your comments.

Its a full carbon fiber frame and landing gear etc.

Props are 12 x 4.5 full carbon fiber on 880kv jDrones motors with 40amp ESC and 2 x 5000mAh batteries.

Flight time is unsure yet, as I haven't flown it.  I wanted to take the pictures before anything went wrong :-)

Calibration is now complete, so it should go for its for flight in the next couple of days.

As for the FPV camera, I am not using it for FPV as such, that particular camera is there purely to help position the main Sony Nex5 for aerial photography.  I may add a second smaller FPV camera for FPV flying in the future with a switch to select between the two.

Unfortuantely the Sony NEX 5 does not have composite out, if you use the HDMI out and then convert it, you loose IR control for shutter and video switch etc which is important to me.

I have built a small Arduino Mini which links to the Nex 5 by IR and allows me to switch video on and off, or switch over to photography mode and trigger the camera or leave it on a timed 5 second auto trigger.

More to follow I guess when shes had her maiden flight :-)

Comment by Glenn M on August 24, 2013 at 6:26pm

Hi Steven, would you be able to please share the code you're using to trigger the nex5 with the arduino mini? I have picked up the necessary hardware and would like to get my one to do the same thing. You have yours set to accept a PWM input and trigger the camera based on that right? 


Comment by moglos on August 25, 2013 at 3:16am

Hi Steven. I've got a NEX 5N and I don't have any trouble controlling the shutter and video while I've got HDMI out running. I'm using a converter that looks like this and this GentLED IR trigger.

Gentles has a page on the problem here, I haven't noticed the problem (I use auto focus) but I'll verify that I am getting shots every 2.5 seconds, there may be gaps that I haven't noticed.

I've also tried a second fpv type camera, but the HDMI out means I can better see exactly what the camera is capturing, and I can see when it is taking shots (it's easy to get stuck in movie mode and not realize you haven't stopped it).

What is the gimbal you're using?


Comment by Arthur Benemann on August 25, 2013 at 8:28am

It's nice to see DroidPlanner being integrated with such a nice system.

Comment by Tissy on August 26, 2013 at 3:55am
Thanks moglos. When looking at IR control for the Nex, the problem you posted about was what I read. Initially I decided to design my own controller as it gave me more customised control for trigger etc. I have not only the single shot, but I can also modify the timings for continuos trigger. I've added the facility by using one of the dials on my controller to alter the shot rate from 1 shot per second upto 1 shot every 30 seconds. All this by PMW control of course.

Would people be interested if I were to supply the IR controller?

I shall have another look at th HDMI output as I bought a HDMI to RCA converter in preparation. The other reason I went for a separate FPV camera is I can still use the mini camera, without having the Nex as part o the payload.

Comment by moglos on August 26, 2013 at 4:24am

I didn't know about the problem when I bought my converter and IR trigger. Fortunately I haven't been affected. I like that your controller is adjustable, but if I'm pointing at my target I want to shoot flat out. What sort of situations do you imagine it will be useful for?

For mapping there is now a trigger per distance feature in APM (arduplane at least, I'm not sure if that exists for arducopter).

I would imagine the HDMI cable out location can be a bit of a bugger for some gimbals, and if it's a stiff cable it might upset the gimbal balance/movement. What is the gimbal you're using?


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