I’m really excited about this. I have been saying for a long time that we need to get more serious about stuff like this. It looks like he has multiple FC boards, and can he recover from a bad LiPo, too? And the video shows a motor going out, and how did he restart it? Looking forward to the English version!
This is an indication of what he’s trying to do. Sounds like multiple redundant data buses. Not sure what specific failure conditions it addresses. But it’s progress!
As you say, motion in the correct direction. The I2C bus has a reputation of collapsing if one of the devices on it goes bonkers so I'm glad to see the use of a secondary bus. Haven't seen the acronym UART for a while either (universal asynchronous receive/transmit). I still fret that if a LiPo goes rogue it might drag the voltage of the good one down -- but there's no easy way to have an isolator between them that can switch north of 120 Amps. Also the critical failure points in the above are the Tx and Rx. But it's still good to see the spotlight moving to redundancy. I was looking at the Airbus A380 flight systems -- now there's redundancy in terms of flight management computers! Some of them vote on how to fly the plane and the others just kvetch about the crappy way the ones flying the plane are flying the plane! "You're going too fast!" "You're too close behind that other aircraft!" "Are we there yet?" Andy
I asked the USA Graupner rep about a "satellite" (like I do with my Spektrum) and he said you can just use another Rx. Might be a good use for one of those inexpensive GR-12L 's?
In the last part of the video there he is showing that if there is a failure in the Rx/Tx then the slave FC/Navi takes control and initiates a return to home/auto land. Therefore, I believe, the second Rx would not be needed for redundancy. I also noticed that he had a 12v lipo sandwiched in the lipo holder to power the slave system. So if a main flight pack did fail (6S) the the 12v lipo would be in charge of the flight back to home ??? As per usual, a pragmatic solution from the Germans. Greetings, Adam
I'm with you, going towards redundancy is huge! Have you read into the PixHawk redundancies at all? From what i'm hearing that's a pretty big step in the right direction as well.
Probably more “user friendly” than this one. The F-35 has a friendly R2-D2 on board connected to an evil HAL 9000 http://sploid.gizmodo.com/the-f-35-has-a-friendly-r2-d2-on-board-or-an-evil-hal-9-1526383993