The camera I use is the Nikon1 J3. It weights 321 gram with battery, SD-card and a 10 mm f/2.8 lens. The reason I choose this camera was because I already had one. I only had to get the 10 mm f/2.8 lens because is is faster and lighter than the kit-zoom.
Later on I may upgrade to a Nikon Cooplix A wich has the same angle of view but weigths a few gram less and has a larger APS-C sensor. It does not have interchangable lenses, but I don't think I'll ever need anything else than a fixed wideangle for aerial photography. If I do, I can hook up this J3 again.
The gimbal as delivered, right out of the box.
The two carbon-fibre plates at the bottom are the mounting plates. They will be separated by the rubber vibration dampers (top left). To the right are the three brushless motors. The PCBs are the controller unit and IMUs. The packet did not include any manual or assembly-guide, but I believe I can put it together right anyway using the photos on the retailers website.
The controller is supposed to be a 3-Axis AlexMos v2.4 controller. After some digging at aerialpixels.com I found out that this is the Board version 3.0 and that 2.4 is the Firmware version. I also found the user manual. That will make things a bit easier.
One problem arised when it came to attaching the IMU to the frame; There were no suitable holes. I had to drill a new hole and cut M3-threads in it. After that I could attach the IMU.
Another problem was that the motor-cables was not in place and had to be solderd to the motors. Lesson learned: The cables should be adjusted to suitable length before being solderd to the motors. the yaw and pitch motors need full length cables while the roll motor need less than half length.
The gimbal with the camera, assembled and balanced. It is upside-down off course since it is supposed to hang from the underside of the drone, not standing on a desk.
I have not weighted it, but all included I guess it become almost 300 gram heavier than calculated. The specified weight of the gimbal was without the motors.
One thing that was a little too good to be a coincidence was that the gimbal controller and the HDMI-converter had the same footprint, so I could mount them stacked.