A speed comparison between the various flavors of Samsung cards.

Card Maker--Model--Form--Class--Read (Listed)--Read (Tested)--Write (Listed)--Write (Tested)

Samsung---Evo 32gb--Micro SD--10/U1--48--43.83-- nl--25.79
Samsung---Evo + 32gb--Micro SD--10/U1-- 80--89.97--20--28.31
Samsung---Pro 32gb--Micro SD--10/U3--90--89.97--80--68.37

Goal: Fly an RX-100 (or any similar or lighter camera) on a Phantom 1, or other light multicopter.

1. Keep weight as low as possible.
2. Ability to control tilt of camera in the air.
3. Video downlink for shot framing.

I purchased a simple servo gimbal from Hobbyking (https://www.hobbyking.com/hobbyking/s...bal_FC_T8.html)


I didn't need the roll function, and I wanted it to hang from the bottom of the quad, so I used only the parts of the gimbal that I needed. I also felt that the top and bottom pieces were too flexible, so I replaced them with thicker carbon plate. On the lower one, I added a tab on which to mount a board camera for live video downlink for framing shots. The resulting gimbal weighs about 60g

I attached the pitch servo to the F2 port on the Naza M FC and configured the lever on the back of the P1 transmitter to tilt the gimbal. The board camera is connected to an Immersion VTX. I use a Velcro strap with a rubber button glued to it to engage the shutter release button on the Sony RX-100. I power the RX-100 right before arming the motors, and the camera shoots stills continuously for the duration of the flight.

The P1 with standard lipo, iOSD mini, PMUv2, 600mw VTX, Sony board camera, tilt gimbal and Sony RX-100 weighs in at about 1230g.
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