Connecting ESC's - Connect all Power wires to pins or just one?

December 15, 2019, 10:16 am

≪ Previous: Bad Logging with Cube Orange Copter 4.0.0 Master and Copter 4.0.0 Beta

I am hooking up my ESC’s to my Pixhawk1 and looking at the official documentation, it says to hook up all three wires (+,-,signal) to the servo rail of the Pixhawk. This is how my octopter came when I got it in pieces, seems right, but… In a YouTube video from someone I think knows what he’s talking about (https://www.youtube.com/watch?v=CfQ-9MIHKkU), he says to only install one of the red wires to a power pin on the Pixhawk’s servo rail. Which is correct? Why the difference of opinion?

I’m also wondering How long can these ESC wires be? Can I make them plenty long for lots of room to work with?

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Zubax GNSS 2.0 NO GPS Message

December 15, 2019, 11:39 am

≫ Next: GPS RTK for more than one vehicle

≪ Previous: Connecting ESC's - Connect all Power wires to pins or just one?

@rickyg32 wrote:

So I finally got to rebuild my large drone.
I have connected the Zubax GNSS GPS to the Can Port and confirmed the pinout, that its connected to the buss correctly. There is a terminating resistor in the second port.
I have confirmed continuity for all connections.
I have gone over the Can settings that I am aware of.
I have checked the LEDs and they all seem to blink.
The Arducopter firmware is the latest .3.6.12

I have attached my config file…I have no clue.
RG-XL PArams 12-15-2019.param (14.4 KB)

Any suggestions would be appreciated as I am pretty sure I am missing a config item.

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GPS RTK for more than one vehicle

December 15, 2019, 1:04 pm

≫ Next: Full parameter list has disappeared

≪ Previous: Zubax GNSS 2.0 NO GPS Message

@elgarbe wrote:

Hi, I’m looking for a RTK GPS kit that offer more than one rover options. Is there a option for somthing like that? I see a lot of kit that come with 1 fix base and 1 rover, but I can’t find how to buy another rover.

Thank

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Full parameter list has disappeared

December 15, 2019, 1:14 pm

≫ Next: Strange VCC behaivor

≪ Previous: GPS RTK for more than one vehicle

@jiji79 wrote:

Hello, I’m under the latest version of mission planner and in configuration the full parameter list menu has disappeared. Anyone know why and how can I put it back because I use it a lot. Thank you.

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Strange VCC behaivor

December 15, 2019, 1:19 pm

≫ Next: Foam Armor for Foam Planes， promising？

≪ Previous: Full parameter list has disappeared

@alberto.munizaga wrote:

Hi

I have an hexa with mauch BEC and mauch V and C sensor.

I have been checking the VCC from the logs, and I have found this behavor very often.

Something is related with the RTL, every time is used this happend, I could see another related with a GPS glitch

I have several drones, differents frames, and I get the same behaivor.

image.png1431×544 125 KB

image.png1732×575 297 KB

image.png1273×613 61.6 KB

Here are the logs
http://190.100.113.54:16211/archivos/logs/vcc/1.bin
http://190.100.113.54:16211/archivos/logs/vcc/2.bin
http://190.100.113.54:16211/archivos/logs/vcc/3.bin

Does anyone knows what it means?

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Foam Armor for Foam Planes， promising？

December 15, 2019, 4:28 pm

≫ Next: Rangefinder Sensor + Arducopter + QGC = how?

≪ Previous: Strange VCC behaivor

@foxtech wrote:

we have developed a cool spray for all foam planes, currently available as small amount reinforcement for Nimbus VTOL.
available in light grey color now. do you think this technology will be promising?

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Rangefinder Sensor + Arducopter + QGC = how?

December 15, 2019, 6:55 pm

≫ Next: ReadyToSky escs beep immediately after plugging in power

≪ Previous: Foam Armor for Foam Planes， promising？

@GiovaneM wrote:

I’m using a lightware SF11/B rangefinder on a pixhawk cube 2.1 and mission planner, and I can successfully use it for terrain following on autonomous mode, but I never success to follow terrain in any modes using this sensor and qgroundcontrol, I did several research and never find a way to do it.

So, is it possble to use the rangefinder sensor with pixhawk cube (chibios) to follow terrain in auto mode on qgroundcontrol?

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ReadyToSky escs beep immediately after plugging in power

December 15, 2019, 7:15 pm

≫ Next: How to get the speed graph and acceleration graph in analyze of QGC

≪ Previous: Rangefinder Sensor + Arducopter + QGC = how?

@Tampa_Drones wrote:

I have an issue where I plug the battery into my craft and the escs constantly beep. Typically, because this is a fresh build and new speed controllers, I use mission planner to calibrate them. Unfortunately, I am unable to get that far. The flight controller boots normally, but the escs continue to beep, even when they arent plugged into the pix! I tried manually calibrating but the escs just dont wont. Any ideas?

Readytosky 30a esc
Pixhawk flight controller on newest firmware
Tarot 360kv motors

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How to get the speed graph and acceleration graph in analyze of QGC

December 16, 2019, 12:03 am

≫ Next: Antenna tracker with a different radio link.

≪ Previous: ReadyToSky escs beep immediately after plugging in power

@yezishu2181345 wrote:

HI, now i want to get the speed graph and acceleration graph of the car , which one should I choose in analyze of QGC? THANKS.
图片.png1920×1018 90.8 KB

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Antenna tracker with a different radio link.

December 16, 2019, 12:21 am

≫ Next: Pixhawk 2 Board showing COMPASS_DEV_ID = 0

≪ Previous: How to get the speed graph and acceleration graph in analyze of QGC

@gymeszoly wrote:

In my job I would like to make an antenna tracker. It is a manned vehicle so no need for the autopilot function on board and the radio I use is a licenced frequency radio that has an Ethernet interface. I am thinking about a solution that I transmit the GPS data from the vehicle through my radio to the AAT. Than in the ground I build up the devices that normally planned to place to the vehicle. So I connect my remote GPS to a flight controller. Now I have to use the original radios ( I think 900 MHz radios) to connect my hacked remote device to the normal ground AAT boxes. Of course I would like to remove these 900 MHz radios from the system but I do not know what coding or other function are these radios do.

What do you think about in general and what could be the simplest way to build up this system?

George

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Pixhawk 2 Board showing COMPASS_DEV_ID = 0

December 16, 2019, 12:43 am

≫ Next: Which Lidar is best suited for my Pozyx project?

≪ Previous: Antenna tracker with a different radio link.

@Flyingcowboy wrote:

I am using the Pixhawk 2 board. Yesterday I found that COMPASS_DEV_ID is 0. What will be the possible reason for it?

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Which Lidar is best suited for my Pozyx project?

December 16, 2019, 4:09 am

≫ Next: Dose Dronekit on_mesage listioner use recv_match in mavutil?

≪ Previous: Pixhawk 2 Board showing COMPASS_DEV_ID = 0

@Sander wrote:

Doing the IndoorLoiter project based on this project https://ardupilot.org/copter/docs/common-pozyx.html

Now I’m facing issues due the precision of the pozyx anchor ranging system. The Z-axis has a 20cm off accuracy which is causing Altitude “instability”. I want to maximise the stability, so I can resume my project and plan missions indoors. Accuracy is something where I’m looking for in this project, because the drone needs to map it’s course, so it can be flown again by the drone pilot. I did some research and found some Lidars that are being supported by ArduPilot/MP. My budget is max. around €50,00 for the Lidar. So this bring me to the following Lidars:

TFmini Plus https://drones.altigator.com/tfmini-plus-rangefinder-12m-p-42669.html?zenid=48j4v912cbkiih15fb9qjn32i5 --> how well does it perform?

XL-MaxSonar-EZ https://www.maxbotix.com/product-category/xl-maxsonar-ez-products --> Lots of questionmarks on the reliablity of their collection and which one is actually suited.

ST VL53L0X / VL53L1X Lidar https://ardupilot.org/copter/docs/common-vl53l0x-lidar.html --> Cheap, but propably not reliable.

TeraRanger Evo Mini https://www.terabee.com/shop/lidar-tof-range-finders/teraranger-evo-mini/ -->I’m wondering if this one has the same support as the TeraRanger One?

Does a combination with an optical flow sensor makes much difference?

Anyone here tested one of these and is very satiesfied with its performance?

My project summary can be found on this link:

My IndoorLoiter project with Pozyx Copter 3.6

Hi all, for my internship I’m doing a project for autonomous indoor flight. I’m already familair with the Arduino, so that side is mostly covered. I have build a Quadcopter before, but that wasn’t as advanced as this. http://ardupilot.org/copter/docs/common-pozyx.html The project so far: Setup and configured the Pozyx beacons and tag. Updated beacons and tag refresh rate to high, so I don’t have the EKF_IMU failed error all the time. Changed all the parameters in Mission Planner. I curren…

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Dose Dronekit on_mesage listioner use recv_match in mavutil?

December 16, 2019, 7:18 am

≫ Next: Mission Planner V 1.3.70

≪ Previous: Which Lidar is best suited for my Pozyx project?

@Brian_Duvall wrote:

Hello all,
I am attempting to read IMU data. So far I have done two different ways. One is with Dronekit useing the add message listener. See results below. The curve appears to have duplicated points and is jagged.

Dronekit_data_gathering.png1853×991 29.2 KB

The second way is using recv_match as shown in this example:https://gist.github.com/vo/9331349#file-gistfile1-py-L36

looking at the middle plot the line is vary smooth with no repeated points!

Directly_reading_Mavlink_mesages.png1853×991 64.6 KB

I am trying to figure out how Dronekit gets Mavlink messages to figure out why my results are varying. I see that it is using this line here to add_message_listeners to get the messages.

https://github.com/dronekit/dronekit-python/blob/master/dronekit/init.py#L542

My question is dose Dronekit use recv_match when add_message_listeners is called?

recv_match is in pymavlink/mavlink
github.com
ArduPilot/pymavlink/blob/master/mavutil.py#L444
                usec = int(time.time() * 1.0e6) & ~3
                self.logfile.write(str(struct.pack('>Q', usec) + msg.get_msgbuf()))
            self.post_message(msg)
            return msg
        else:
            # if we failed to parse any messages _and_ no new bytes arrived, return immediately so the client has the option to
            # timeout
            if numnew == 0:
                return None
            
def recv_match(self, condition=None, type=None, blocking=False, timeout=None):
    '''recv the next MAVLink message that matches the given condition
    type can be a string or a list of strings'''
    if type is not None and not isinstance(type, list) and not isinstance(type, set):
        type = [type]
    start_time = time.time()
    while True:
        if timeout is not None:
            now = time.time()
            if now < start_time:
                start_time = now # If an external process rolls back system time, we should not spin forever.

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Mission Planner V 1.3.70

December 16, 2019, 8:17 am

≫ Next: IMU2 Temperature / Compensation Question

≪ Previous: Dose Dronekit on_mesage listioner use recv_match in mavutil?

@Wolfgang-BN wrote:

I’ve got twice the item “Firmware installieren” on the Initial Setup-Screen. See attached files. What is it good for?
Firmware Arducopter V3-6-12 Quad.pdf (217.8 KB)
Firmware Copter V3-6-12 Official.pdf (198.1 KB)

Wolfgang

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IMU2 Temperature / Compensation Question

December 16, 2019, 8:19 am

≫ Next: Mission Planner and WP uploading does not work

≪ Previous: Mission Planner V 1.3.70

@whopis wrote:

We were having a problem with the Gyros Inconsistent Pre Arm message, and when looking through logs I noticed that on multiple craft the IMU2.T (temperature) value was always zero. IMU1 and IMU3 had temperatures that made sense.

I can also see that the IMU2 gyro values drift as the internal heater brings the board up to temperature, while IMU1 and IMU3 do not. This makes sense given that the temperature value for IMU2 is always 0 - it can’t perform any temperature compensation on that sensor, hence the drift.

This seems to be consistent across multiple PixHawks.

So is this normal behavior? And if it is, what is the reasoning behind it?

Thanks in advance.

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Mission Planner and WP uploading does not work

December 16, 2019, 8:23 am

≫ Next: Using of a motion capture (Vicon) room as feeback of the position for Ardupilot (replacing the gps)

≪ Previous: IMU2 Temperature / Compensation Question

@Michail_Belov wrote:

I have developped a propietary Groundstation software and I am trying to use Mission Planner for WP editing and uploading of the way points to my Groundstation and also displaying airplane position in Mission Planner.

I started with Heartbeat and GPS Raw sentences; I was sending them to Mission Planner using MAVLink v.1 sentences. Mission Planner recognized them, displays correctly aiplane position, etc. so far so good.

Next step: I tried to upload from Mission Planner WP to my groundstation. (By pressing Upload WP button).

When I do this,

Mission Planner sends MISSION_COUNT
My Groundstation responds with MISSION_REQUEST,

but Mission Planner seems not to recognize this sentence, sends MISSION_COUNT a couple more times, and then displays an Error Message, something like timeout for WP, within a function which seems to include Mission_Type. Mavlink v1 does not have this parameter for MISSION_REQUEST. So I think that the problem is that I am using v1 and not v2.

I changed the sentences to v2. Again Mission Planner recognizes perfectly my heartbeat and GPS raw, but with MISSION_COUNT things start to look weird: for v2, Mission Count has a new variable added, Mission_Type, and the sentence length for MISSION_COUNT increased from 4 to 5 bytes. however, Mission Planner sends me an FD (=V2) and then LEN=4 (=message length for V1!!!).

And when I try to return MISSION_REQUEST in V2 format (where Mission_Type is also added), it still does not recognize it…

HOW CAN I UPLOAD WPs to my system??? That is the only functionality I want from Mission Planner (in addition to displaying position).
What is the protocol?

The link is through cable Ethernet TCP, so it is 100 % solid.

I can upload the software code if needed

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Using of a motion capture (Vicon) room as feeback of the position for Ardupilot (replacing the gps)

December 16, 2019, 8:30 am

≫ Next: Is it possible to perform a dynamic simulation of a swarm of ardupilot quadcopters?

≪ Previous: Mission Planner and WP uploading does not work

@Daniel_Blanquez wrote:

Hello,

We are working on a project to fly a linux based drone with a raspberry pi and a Navio2 plugged on it in a motion capture room (Vicon). Unfortunately the Vicon software we have access to is Vicon Nexus. The goal is to replace the GPS information with the motion capture room data. There is a page on the ardupilot documentation about it : https://ardupilot.org/copter/docs/common-vicon-for-nongps-navigation.html . Does anyone have already implemented this method ? Does it work ? The final goal of the project is to implement this for a swarm of drones. Is there an already existing way to make multiple drones fly in a motion capture room ? Finally we would want to implement our own controller so is there a way to combine ROS and Ardupilot so we can implement our controller in ROS without having to redo everything that can be used from Ardupilot ?

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Is it possible to perform a dynamic simulation of a swarm of ardupilot quadcopters?

December 16, 2019, 8:43 am

≫ Next: Ahrs not healthy on arm

≪ Previous: Using of a motion capture (Vicon) room as feeback of the position for Ardupilot (replacing the gps)

@pedro27 wrote:

Hi Everyone,

I am working with Linux based Raspberry Pi drones and I want to make them work as a swarm using Ardupilot. As working in a Vicon room is not always possible if it is possible to perform a dynamic simulation of a swarm of ardupilot quadcopters? Could this be done in Gazebo? Any info would be useful.
I’m running Ubuntu 16.04 LTS and ROS kinetic and if you need more information from my part please ask.

Thank you all in advance for your help,

Pedro Wunsch

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Ahrs not healthy on arm

December 16, 2019, 12:23 pm

≫ Next: Copter descends in Autotune Mode with Copter 3.6.12 firmware

≪ Previous: Is it possible to perform a dynamic simulation of a swarm of ardupilot quadcopters?

@TheTroll wrote:

Hello!
I have an arm precheck failure : AHRS not healthy when I have INS precheck turned on.

Could you please recommend how I can fix it?

Of course I can disable INS validation but it is better to investigate the problem

Thanks!

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Copter descends in Autotune Mode with Copter 3.6.12 firmware

December 16, 2019, 1:17 pm

≫ Next: "Bad LiDAR Health" when RNGFND_LANDING=1 for autoland

≪ Previous: Ahrs not healthy on arm

@nghiajenius wrote:

Hello everyone,

Today I started tuning my newly built quadcopter with Copter 3.6.12 firmware, the copter performed normally during Autotune session for 5mins, but then suddenly descended to the ground!!!
I checked the log file but I haven’t found any certain reason for this strange behavior (at the end of the log file).

Link for log file: https://drive.google.com/open?id=1fRxUacG2pa_KdwRhefcT7Su1VKiTRqMp

Could someone help me have a look at the log file and give me some suggestions? I’ll very much appreciate it. Thanks!

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