It's amazing how quickly BLGs went from a novelty and costing thousands (zenmuse) to something you can get for $172 shipped!
I received my RCTimer Brushless Gimbal (BLG) and controller (Martinez v1) yesterday and of course had to try it immediately. Mark came over and helped with the build and documentation. The kit does not come with any instructions, so the RCGroups thread is the best source for build info.
Overall the quality of the RCTimer kit is not bad. There was one missing screw and a few things we had to alter to make it fit (see the build log link below for details). But the material is easy to work with. The default firmware and settings on the board seem to be pretty decent for a start. We initially had the IMU orientation and motor connections different, the result of that was shaking in the pitch axis. Once positioned and connected as shown above, it started to work fine without any parameter changes.
Build log with many detailed pictures:
Video showing connections, start-up sequence and motion test:
Time lapse build video:
Next up: Connect to the GUI (no luck so far), connect the RC, fly...