Recent content by mlebret

Hello, Some news... I had a try with PPM Sum on my VRBrain 5.2 board, same result as you (no signal). Pin 8 is at 3.3 volt. Marc

Hi, Can you have a look at the message information (latest on the right side of the APM Mission Planner) and check Board version and firmware version. I had one occurence of wrong firmware flash...and the board was identified as 5.1... I had to use DFU to downgrade firmware and redo the flash...

I have VRBrain 5.2. Here is the wiring for 5.2 and 5.1. They are differences... https://vrbrain.wordpress.com/vrbrain-5/ Marc

Hello, First be sure your R/C is set to Plane, not heli... Then you are free to choose your flight mode (1 or 2) but most of U.S. users are mode 2, like in a real aircraft, when you move the Yoke to control Roll and Tilt with right hand, and Power lever is on the left with the Yaw control. ...

Hello, There is my latest home made MultiCopter: OctoQuad X 750 mm frame, Center plates from 1mm carbon plate, arms are square carbon tube 22 mm ext, motor support are from 2.3 mm G4, Take Off Weight is 4200 g, T-Motor 4008-16 with 13" propellers, 6S, Gimbal is replaced by one 1 kg lead...

Comparison show advantage/disadvantage of flat Octo to X8 configuration in case of one motor failure. In X8 configuration around 15% power of remaining motor is absorbed by windmilling failed motor. Marc

Unless you anchor it to the the ground and apply full power... If you stay below 3 kg max take off weight, you are within the limits of your power module for normal GPS NAV flying. Marc

So you will draw less than 5 Amp per motor (1/3 of max power) while hovering. Unless you want to fly at warp speed, you do not need 4S and 8x4.5 props but 3S and 11x4.5 props with your kv920 motors. Marc

My view of the thing: Air diverge below the propeller, by tilting the motors outward, you force more air towards the center of the multirotor, increasing efficiency. There is a flaw: less stability. It is why you will see some large commercial multirotors with motors tilted inward. Marc

Nice work, It may be interesting to have the same calculation at mid power, as it is the optimal power setting for flying. Thanks, Marc

There is a system used by gliders (mandatory in France), low cost, named FLARM http://www.flarm.com/index_en.html Last month they did an experiment with a small UAV (less than 1kg) with a Tx only version.http://www.aerobuzz.fr/spip.php?article5486 Marc

None, Marc

sBus will go FROM your receiver TO your SuperX ;) sBus2 is mainly for telemetry. Use sBus plug on the receiver and mode D as you stated. Program your transmitter as needed. Marc

For the Jeti ESC, have a look there: http://multirotorforums.com/threads/product-review-jeti-hicopter-30a-opto-esc.18559/ Yes you have to use an Y plug to hook BEC to ESC line - No way to use Com or Led port, wiring is different and I do not think there is a common + with Input rail. Marc

Hello, Jeti ESCs are "true" opto ESCs. So you have to provide +5 volts with an external BEC on the ESC rail of the ZeroUAV card and do not remove red or ground line from the ESC wiring. Marc