austntexan's blog View Details
Archive for June, 2014
Posted by austntexan | Jun 15, 2014 @ 09:04 AM | 5,582 Views
Updated vendor list. Most are in North America.

Shipping times are generally never more than 5 days.

Some of the below are very small operations(in some cases only 1 or 2 people) but I've received very good service and fair prices from all.

NEW - Canadian but ships fast to the US/ mini stuff and Naze FCs**
NEW -West Coast/Cali
RMRC - Midwest based
MRSS -West Coast/Cali based - 3rd Coast/So.East/Florida/based - West Coast/Cali - West Coast/Cali (Germany) - Midwest - West Coast/Cali EZ Coast/NC (hey neighbor!) - The Great Southwest/Chandler, AZ - Middle o' the Boot/Central Flo-rida/based - Midwest - asia/usa/canada

**ordered on 6/10, shipped 6/11, received 6/14

Note: Just ordered a Diatone QAV250 ($21) and a couple Naze boards from Rotorgeeks(Canada). Delivered in 4 days! Shipping cost was less than I've paid for most US vendors.

I'll be reviewing the QAV250 in a subsequent blog entry. At first glance, this little quad looks amazingly well built and is based on a great design concept; FPV racing quad, or AV style mini-H quad.

The frame is strong and light. It's not the typical DJI clone arms. It will withstand some abuse. However, at $13 for a replacement frame, I don't expect to be disappointed if I manage to break an arm in a bad crash. I've not seen many pics on their RCG thread with broken frames.

Posted by austntexan | Jun 09, 2014 @ 06:59 PM | 5,948 Views
Fun flying today on 4S. I never retuned the Naze for FPV and I'm still flying/crashing plain ole GemFan 845 Nylon cheap props.

Had a blow out today on the GemFans. Now I know why people say never to fly these on a heavy quad (even though this one is well below 1kg).

Same setup as yesterday's experiment. I'm getting Jello, but that's ok. There are a few reasons for it, I believe. . .

1. Mobius lacks the mass of a GoPro
2. props are not the best for this application. 950 or 850 HQs will work much better.
3. 4S produces a tremendous amount of thrust on these motors, with these props. . . the Naze needs to have the P lowered to accommodate the added power.

3 videos.

1. 3S2200 RMRC LiPo. . . good flight, very little jello and pretty smooth considering
2. 4S1300 Skylipo. . . light weight 4S LiPo. . . worked well, quad was very nimble, vibes were more pronounced
3. 4S2650 Glacier(BuddyRC). . . heavy-weight configuration. . . ended up breaking a prop on this one in mid-air. Lots of torque. The Glaciers are rumored to have a higher C rating than advertised. Tons of headroom with this LiPo. Fun flight.

Warthox Mobius 3S Crash (4 min 20 sec)

Warthox Mobius 4S 1300mAh (4 min 42 sec)
...Continue Reading
Posted by austntexan | Jun 09, 2014 @ 10:30 AM | 27,991 Views
For Mac users, Photo Booth(part of OS X) will function as a WebCam app with the Mobius.

The Steps. . .
1. remove memory card
2. power on Mobius
3. connect Mobius to Mac via USB
4. launch Photo Booth (free app on every Mac, comes with OS X)
5. in the the Photo Booth app, go to Camera>Mobius (select/check "Mobius")

That's all there is to it.

It will take photos without issue.

Video is choppy in 1080p. I think 720p would probably work better for webcam video.
Posted by austntexan | Jun 08, 2014 @ 07:30 PM | 5,205 Views

Mounted the Mobius and did a few punchouts from my driveway.

Using a 4S2600 Glacier(288g). AUW is ~825g
Warthox FPV 4S Punch Outs w/Mobius (1 min 28 sec)

Naked, I'm guessing it's ~537g.

I trimmed the GoPro mount down some and drilled new holes, to get it closer to the plates. Lowered it about 1/4".

Switched out the aluminum booms for all CF. Added shrink to the motor mount platoforms as well as where it joins at the plates. Listening to the Mobius, it sounds really solid. No rattling at all.

This version of the Warthox is slightly shorter in wingspan, than the aluminum version. CF is around 360mm, m2m.

I've got the Mobius perfectly level and am only just getting the props in view. Mobius sits out farther, off the center axis, than the GoPro. This is prob why it's a little easier to get a clear FOV.

I'll be tilting up for normal FPV'ing. . . hoping to get a clear FOV without a lot of tilt, making landing a little easier.

Will being FPV'ing it tomorrow. Stay tuned for updates. . .
Posted by austntexan | Jun 06, 2014 @ 06:55 PM | 6,171 Views
The mount was a success!

I would include zip ties run through all the rubber anti-vibe mounts. Any hard landing will pop the whole camera assembly off the frame. At the field, I only had one of those bread twisty thingies and used that to keep everything together better on landings. It worked!

Warthox was 100% on track with the size of these motors and his quad design. IMO, the 2208 (in the higher KV ratings) is the perfect 'big motor' for mini quads too. They're light enough and tough enough. The limiting factor will be the size of the ESCs. Using sunrise/BLHeli slim ESC (possiby Afros too) will supply enough cushion to run these larger motors at higher KV on the smaller frames.

Next addition will be a servo linked to a switch that moves the flight cam from level(for take-off/landing) to 25-30% for FFF. Maybe link it to the 3 way switch . . . .

Position 1: Level
Position 2: Light Speed
Position 3: Ludicrous Speed

Previously, I'd flown this rig on 2.4, but really missed my UHF link, allowing me to fly behind buildings and such. So, for this flight, I switched the control over to 433. Combined with the low powered and unshielded vTX (5v 200mw 1280mhz), I got a pile of static all over the place. I could still fly but I had to be very careful about what I was doing.

The mini vTX is good but I'd only recommend using it on 2.4. Shielding with copper foil might work but I would prob opt for 5.8 or use the ultra small RMRC 12v 200mW 1.3Ghz vTX next time. Slightly larger but fully shielded and it has an SMA for using a VAS CP antenna.

Why the crash at the end? Massive voltage sag on an old HK NanoTech 4S1300. I was full throttle after the initial drop in and she just kept on falling. Pulled the LiPo and it still had 35% in the tank!

Warthox FPV Iron Man (5 min 53 sec)

Posted by austntexan | Jun 05, 2014 @ 01:15 AM | 5,385 Views
Final got a little time to continue my experiment with the Warthox and a more complete FPV solution.

The idea is to have something that is easy to instal/remove. If I want to fly LOS, the entire unit detaches with 4 M3 screws.

The entire setup consists of. . .

- 2, G10 Plates (50mm square)
-4, M3 plastic screws (breaks or strips away in bad crash)
- 4, HK anti-vibration rubber

Here's my original post back in early March. . .

Some footage of the version 1 mount featured in the above post. Shot this 2 days ago. This was using a Kypom 3300 4S LiPo. You can hear the loose motor rattling. Not sure if the ESCs are desynching under load or if the FC is unhappy from all the vibes. I know everyone says this but my props were pretty chewed up at this point. I'd flown about 6 LiPos already and taken a few spills. . .

I was actually afraid to get on the throttle 100%. I've only got 12A BS/SK ESCs on. She gets a little warm on 4S lol. With nice props, possibly HQ 850 or 950s, she'll smoke. For clear FOV, 8" all CF Gemfans would probably work best though.

Sorry for the 720p. I shot this in 1080/48/wide but Quicktime pulled my resolution down when it posted. I'll do 1080p for the v2 version tomorrow. Stay tuned!

Warthox Alum + Simple FPV Mount v.1 (2 min 29 sec)

Newer version uses a typical gimbal isolator plate, found on many quads. These can be made very easily using common tools.

The FPV setup is modular and based around a previous DIY...Continue Reading