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Dual External Compass?

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I bet they both have the same mag sensor inside fighting for the same I2C address. To make it sure, open up and look for a mag chip it is very likely a HMC5983L…even if one has an older hmc5883 it has the same address…


An Open Source Frsky Telemetry Script for the Horus X10,X12 and Taranis X9D,X9E and QX7 radios

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Thanks for your insights and pointers. Having dealt with this for hours and trying various scenarios, I believe by now I have gotten a reasonably good understanding of the correct settings and interactions and have heeded all instructions and tips I could find - with no joy.
Having reset the board to defaults and having tried again - with the same results, I now strongly assume it is a hardware issue, and am sending the board back to the dealer.

Odd Journey Crashes

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Yeah, I think that was where the sudden, bad wobble began. And then I applied more throttle, which is exactly what you’re NOT supposed to do during a VRS event! Apparently while VRS is usually associated with descents, it can occur during hovers also, and the small size of the quad can exacerbate this. I’ll run another test today.

Odd Journey Crashes

Guided mode auto take off insane spinning!

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So i think i fixed it!
one of the [motor --> Esc] wires was loose, i fixed that then tried guided mode auto take off and it was flying well!
but why?
why only in guided mode? i can not find any explanation for it…
if it’s about one of the motors spinning slower then the others, why it only effected on guided mode?

Dual External Compass?

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I thought so. Even though, isn’t it weird that in the telemetry I didn’t see any noise or interference between them?

Tricopter cannot climb above 1m

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Hey guys

Having a strange issue on my wicked tricopter setup. It’s not using GPS but instead it has px4flow. I have followed all guidelines on killing the GPS system.

First problem is that I cannot even switch to Loiter mid-flight. I take off in Stab, I can go into althold but when trying to go into Loiter, it just says Mode change failed. Allright.

On the ground though I can switch into Loiter, no problem. And I can take off, position and althold is crazy good. However, the copter climbs only to about 1m and stops there. I push full throttle, nothing happens. I can only descend and hover. To climb, I have to go back into Stab mode, but then I can’t go back into Loiter. I’m about ready to wash my hands off this weirdness.

Seems there’s someone else having a similar issue but his wouldn’t go above 30m. Checked the thread, doesn’t relate to my problem. Any assistance will be greatly appreciated. I can’t send nudes, but I’ll happily send photos of the tricopter <3

Dual External Compass?

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I would think that if they’re contesting for the same address, that only the one that first attaches to that address will work, hence not seeing anything from the other, as the address will already be reserved.


Dual External Compass?

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That’s right. But that is not what happens. I have two distinctive movements of the two sensors in the telemetry, as they were a single one…

Throttle not working in ArduRover 3.2.3 and 3.3.0-rc1

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Thanks Kenny: I will try those parameters and see what happens. Thanks for your foresight
Doug.

Units for time variable in MATLAB files

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Mission Planner has a button to create MATLAB files from telemtry logs. What are the units of the time variable in the created MATLAB variables?

Thanks!

Using "measured" MOT_THST_EXPO: What improvement can one expect?

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MOT_THST_EXPO could maybe be autotuned (or post-tuned from log) ? What about measuring performance at different levels by setting throttle demand to a few different levels, then compare power*voltage or vertical acceleration produced at the different levels.

Mapping a lake with ArduPilot

Introducing APStreamline!

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As of now, APStreamline has only been tested on a fresh install of Raspian on the Raspberry Pi 2/3B+. That said, the version of APWeb used is just a fork of the version used in APSync so it should be safe to delete the existing APSync’s APWeb version and replace it with the one patched for APStreamline.

Eventually, APStreamline will be merged as part of APSync so stay tuned for that :slight_smile:

How can I arm the drone and takeoff without a ground station or remote controll ,using Pixhawk 2.1 and raspberry by python

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We have bought a Pixhawk 2.1 flight controller , and we are working on a university project ; the project is that we have to solve a puzzle by a drone ( which contains a raspberry pi 3 ) and send the right way coordinates to a small car .
Our problem is that we shouldn’t use any remote controller on the drone . So the drone should fly to a specific altitude and then should start looking for the puzzle and solve it .

We have tried to use dronekit python . We could connect to the drone by the code but we couldn’t make it arm and take off .

Is Pixhawk 2.1 support arming and take off with out using any ground station or remote control? . If it does we hope that you send us a code and the method . Because we have search a lot and the project dead line is very near .

Thank you for your time …


Throttle not working in ArduRover 3.2.3 and 3.3.0-rc1

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I reversed SERVO1 and now it spins Right inAUTO

How to make the TFMINI rangefinder talk I2C

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Hi again.
Work in progress. I’ll upload some photos showing final product :smile::smile:.
Do you think that a UBEC rated for 5v 1Amp will be enough in order to power TFMINI + Arduino Pro Mini + Red Led ?

Thanks in advance.

Miguel.

How to make the TFMINI rangefinder talk I2C

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Cool

Yes no problem, the TFMINI Average current is 120 mA

Arducopter 3.6RC CTUN parameter not recognized

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Today I merged a fix for this issue into APM-Planner master. Issue should be solved.

Throttle not working in ArduRover 3.2.3 and 3.3.0-rc1

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my data flash download has 450 files Which are needed?

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