Comment by Seth Bourne on July 17, 2012 at 6:44pm

It's a serious project that need our focus, discipline and responsibility. Get well soon bro.. :)

Comment by Nick on July 17, 2012 at 7:01pm

How'd it get both of your hands?

Comment by frederic rivollier on July 17, 2012 at 7:40pm

I have been so worry about this same issue that I made up some prop rotation blocker using duct tape on my Octo Coax that I slip on every time after flying.

This works great with the coaxial config but not on a quad, it will be great to have some piece of hardware that block the motor rotation when we work on our helis. 

Like a U shaped staple that we could drop on any prop and that will lock onto the arm.

I hope your friend recovers quickly.

Comment by Maxime Carrier on July 17, 2012 at 7:40pm

While preparing my tricopter for flight I unplugged the throttle Channel by mistake, It jump on me a eratic throttle level, It Putted me on thé back and begin to jump arround. By miracle I quickly catched it. (3.6kg of thrust, not easy)

Lessons learned : activate pull-up resistor on the arduino, let my feet on the frame until everything is ready.

Developer Comment by R_Lefebvre on July 17, 2012 at 7:57pm

Frederic, that's a great idea.  I think someting similar could be done for quads.  Just a simple, single loop that slips over the blade and arm.

Comment by Jack Crossfire on July 17, 2012 at 8:24pm

I can think of a more dangerous habit.

Comment by Ryan on July 18, 2012 at 12:01am

Need "THROTTLE HOLD" for multi-copter!!!!!!

Developer Comment by Marco Robustini on July 18, 2012 at 9:05am

@Jack: i agree, but motors are disarmed when i play with the quad in my hands... :-)
When upload firmware to all boards you must use a little power supply (or USB, when avaiable like in APM2) without plug the main LiPo battery! This is a know rule...
Before handling the quad in the hands with the LiPo connected will be confident enough of its own wiring and the software will not crash by moving the electronics, I have run many tests in this direction before being sure that all was well.
The "throttle hold" is useless, just arm the motors when the quad is on the ground and disarm them before taking it in his hands, do not emulate me!
Multirotors are not a toys.

Comment by eduardo on July 18, 2012 at 10:31am

yeap ... multi rotor is not a toy ...

this is my accident with one of my big hexa

this occur by a i2c bus fail

Comment by Jesse Struyvelt on July 18, 2012 at 11:46am

Hi.

It's getting better my hands. I couldn't forsee this. Marco, I didn't even touch my Tx :). Everything is caused by the software. It was the multiwii calibration process that started the quad.

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