Charles Linquist's Discussions (42)

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Beware of the gimbal!

I recently had a failure - fortunately on the ground.

I was using an "Alexmos" gimbal controller and APM 2.6 flight controller.

The gimbal controller was connected to the battery (16V) and to the radio.  I bypassed the flight controller and used one ch

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GPS and dead reckoning

I ordered a UBLOX NEO M8U GPS unit from Drotek in France.  The GPS has dead reckoning built in, and will continue to provide position information even with no satellite reception.

If I'm using a PixHawk, and this GPS unit, what will the PixHawk do whe

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Pixhawk will not load firmware

I have a PixHawk - well, to be honest, I have a 'clone' -  a 'FixHawk'.  I know I should buy the real thing, but I have this thing now and I would like to use it.

At any rate, it connects via USB just fine and everything seems to work.  When I bring u

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GPS, compass reliability

It woul.d seem that GPSs and compasses are fairly problematic.  Some systems use redundant GPSs.

I recently had a GPS failure during flight.  

My question is why these units seem to be so unreliable?  The GPS in my car never has any "glitches" (at leas

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Flying through Mavlink only

Does anyone know of a GOOD controller that can be connected to Mavlink via USB and can actually be used to control a multirotor?   I have purchased a dozen joysticks, simulator controllers, etc.  but I haven't found any of them that is really what I

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Motor issue

I have multirotor motors from several companies and none of them seem to have any varnish over the windings.  I'm not talking about the varnish covering the individual wires, I mean that the windings don't seem to be glued down with varnish or epoxy

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Arming with joystick

When in Joystick control mode using MP, It appears that MP won't allow the arming of a craft with the usual Throttle Min + Right yaw joystick movement.  Is that the case?  Or am I doing something wrong?

I finally found a controller with USB output tha

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Joystick support

I have been trying without success to get the joystick option to work in Mission Planner.   I have tried connecting first and not connecting.  Nothing works. The program recognizes the joysticks, but does not save the settings.  Whenever I quit MP an

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Failover

I have been looking for a way to have Mission Planner do an automatic failover whenever it doesn't receive a certain number of heartbeats from a given input.

For example: I want to connect using COM3: at 57600 baud, and if the channel no longer receiv

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Antenna tracker no longer works

Why is ANTENNA TRACKER now greyed-out in version 1.3.4.0 and 1.3.4.1?  It worked in version 1.3.3.9. 

I was starting to build my own tracker based on information on the net, but find that option no longer works on version 1.3.4.x 

Or am I missing somet

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Can't get Arducopter to compile

I tried to follow the directions in the forum to the 'lettter', but I cannot get Arducopter (for Arduino) to compile.

I'm running Windows 10

I installed GIT and downloaded the source.  I downloaded the MHV AVR Tools, I downloaded the special version of

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Battery Voltage/Current

I'm using an APM2.6 board, and a 3DR voltage/current sensor board.  I had to adjust the voltage multiplier upwards in order to get the voltage readings correct  

BUT...

If a 4-cell LiPO has measured internal resistances of 4,4,7,6 milliohms (respective

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