Betaflight Dual Copter

My second attempt at building a dual-copter, this time with a 3d printed frame and using an X-Racer F3 flight controller running betaflight. Initial hover tests look promising and it flies much better than my previous attempt using a KK2 flight controller.

As well as the parts here, you'll also need
- two of these: https://www.thingiverse.com/thing:519176
- some 15mm aluminium bar - mine is U shaped so I can hide wires and ESCs underneath.