Showing posts from May, 2015

FPV Air race Saarland

I am currently attending an airrace event in Bexbach. At the moment we're having some training flights. There are a lot of people that really know how to race! I crashed during every test flight, just because I am completely out of practice... Let's see how the races will be like!

QRC5 first FPV flight

I had the chance to fly a few batteries in FPV mode, and it's really great fun. The top speed and throttle response is very good, the inertia in tight turns is also not too high although the copter weighs around 400g.

Here's a short Dom HD capture:

The coming evenings, I'll try to get as much practice as possible to prepare for the FPV Airrace in Germany.

QRC5 first flights

Today was the first "garden flight" of the QRC5. It flies really great and has tons of power (4s motors + 2300 kV motors drawing 12.5 Amps each at full throttle). Due to some modifications in the code of my flightcontroller, it is more smooth and responsive (sounds like a contradiction, but is isn't!) than ever before...: I am using kiss escs with "oneshot" enabled. That means that these set the speed of the motor according to a 125 - 250 microseconds PWM input pulse. My code automatically determines how long the calculations of the control loop take and then synchronizes itself with the PWM pulse. This results in a minimum lag between reading the sensors and reacting to them. Furthermore, I also calculate the velocity of the throttle stick and add it to the motor output. This gives a very good response to throttle commands (something like feed forward). I will soon also include the accelerometer to further enhance this. Now I need to 3d mill the moulds for the…

QRC Progress - Part I

Tonight, I assembled the first parts... Everything seems to fit as expected :)