This is my project, I have been working on it for a couple of months. Is not ready yet and certainly it's not good looking, need more work but here is a video of some features.
Note this is a Steadycam design based on ECILOP ideas. But with a Multiwii board instead of gyros. Multiwii is fixed to the steadycam arm and acts as stab controller. I did a couple of changes in multiwii firmware to add a new mode "STEADYCAM" couse "GIMBAL" mode is just delta angle stab, and I need a PID loop stab + delta angle.
I use high speed servos and rubber bands as actuators couse direct drive is a mess.
The inner frame is connected to main frame by rubber band, so vibration cant pass trough to the FC and Steadycam system.
Here are the arms and main frame:
Fully assembled, note that no camera is attached bellow, instead a use a dead lipo battery as ballast and my bike back light which has a laser similar to a laser level.