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Cant move throttle with radio

September 9, 2019, 11:17 am
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@Karan_Chaphekar wrote:

Hi

I have a bit weird setup then usual. Its pixhawk with gps, but i have an old turnigy 9x hooked up to an arduino to do pwm-ppm. I got that part working
The platform is a car with servo steering. For driving motor which came with car i am using a smartflex driver. Its got a mode where it is compatible with brushed bipolar.
Both servo and DC motor moves in move motor section but not in failsafe ( only servo works) also i cant perform throttle tunning.
In failsafe mode i can see throttle change up and down with stick but servo 3 stays on 1500.
Please help solve this issue

Thanks
KC

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Autonomous boat Instruction manual for dummies?

September 9, 2019, 2:26 pm
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@Wywy wrote:

Hello everyone,

so, im no engineer, although i am university educated, took carpentry and learn fast (im smart) but not familair with the electronics involved in this project. can anyone help explain all the components in the boat and their funtion/cost. like an idiotproof guide explaning how it works.
i have an awesome idea for the physical design, the hull and whatnot. i just need help with the electronics… id like for mine to be able to cross long distances. not neccesarily going to send it to hawaii or africa or anything… but maybe from alaska to cali? along coast?

Ive been absolutly obsessed with the idea of building one of these autonomous boats (motor powered) with possible sail for added power. and ill have powerbanks and solar panels onboard… i was told to go with the ardupilot unit. (is this what i should get?) https://www.ebay.ca/itm/APM-2-8-ArduPilot-Mega-Flight-Controller-Built-in-Compass-with-GPS/173493709627?var=472186223365

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Make the rover to fulfill tasks

September 10, 2019, 7:43 am
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@CrisbenDev wrote:

I’m studying the rover firmware. It’s working fine. This is my doubt: is there any way to make the rover to fulfill tasks? Like, if I want it to stop in a waypoint and turn on a light or walk through a whole polygon, and then go to another waypoint and do another task?

If there is a way to do these things, how can I do it?

Thanks for your help :smiley:

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Rover going crazy in lightspeed circles in Simulator

September 10, 2019, 1:00 pm
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@Robert_Driller wrote:

Hi, i am using the simvehicle.py from the latest git pull of ardupilot.
I wanted to test the controll mechanisms of a custom software via mavproxy. It behaved with very extreme movements. Now I tested using the built in “fly here” commands and also get the lightspeed circular movement there. I attached the log. maybe someone can help me.
I already set speed parameters very low so i do not see hot it could spin that fast.

Anybody got an idea?

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New rover project

September 12, 2019, 5:34 am
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@bobbb wrote:

Hi everyone,
I would like to build a rover based on the ardu-rover project.

I would like to start small and expand it ,in time…
I need some advice on a flight controller…i see some of them are very cheap and some are very pricey…maybe someone can give me an advice on a good flight controller, something that will be easy to use but wont break the bank…preferably a future proof one, in case i will want to use it for other projects.

I was also looking at those bodies + wheels + motors:

https://www.banggood.com/C3-4WD-High…r_warehouse=CN

https://www.banggood.com/DIY-4WD-Alu…r_warehouse=CN

are those good options?

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What is kind of sensor can avoid flagpole

September 13, 2019, 10:55 pm
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@lumono wrote:

Is there any sensor or Linda can detect a flagpole (about 3 cm width or the rope) and does object avoidance.

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Do I need to reverse a steering servo for auto mode

September 15, 2019, 3:59 am
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@Colindo wrote:

I notice my steering servo it operating in the wrong direction but can correct it with a setting in my transmitter, but will this affect auto mode and travel in the wrong direction when switched to auto?

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D_shot Brushless motors, not spinning when armed

September 15, 2019, 6:51 pm
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@Vector_Unmanned wrote:

I’ve attached my params for this current build.

This is my first Ardurover project, and second Pixhawk project (always used Betaflight/ Inav)

Likely I’m just missing something basic since I’m new to this system.

I have my hardware all hooked up, steering servos configured, tuned, and tested. I have followed the tutorials for setting up D_shot (running D_Shot300 to avoid slow refresh/noise issues I keep reading about) and when I click to test motors, I get the musical tone, and nothing. Bump up the throttle on the controller, nothing.

I’m using a T_Motor 55A BL_Heli32 4in1 ESC, driving 4 independent 6010 130KV brushless motors on 2S.

All motors are set to the same channel, motor 1 via the Params, and to run D_Shot300, all pins have been switched from PWM out to the AUX 1-4 pins, which through params were set up to run D_Shot.

I keep trying to come at this from different angles, and am about to watch a youtube video to learn how to do pass-through so I can get into BL_Heli32 configurator and set/ verify the settings on the 4in1.

Plan is to set the ESC to run in “3D” mode, which will put the midpoint throttle at zero, and essentially allow me to pull off forwards and reverse.

I’m using HereLink for control, which is somewhat helpful for the settings I am able to adjust via the controller.

Any suggestions would be appreciated. I know this is achievable, I just need to get these motors moving so I can move on to figuring out gimbal control.

Thanks

15Sep19 params.param (13.5 KB)

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Setting YAW from GPS source

September 16, 2019, 5:02 am
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@Sean_Con wrote:

I have a a Pixhawk 4 (FMUv3) board. I want to set the yaw input from GPS.

Method 1

I can use a single GPS with two antennas, to feed in the GPS 1 channel.

For this, i will have to - following this discussion - set:

COMPASS_USE=0
COMPASS_USE2=0
COMPASS_USE3=0


EK3_ENABLE=1

GPS_TYPE=16

GPS_HDG_ENABLE=1
EK3_MAG_CAL=5

I have compiled ardurover from the priseborough branch.. But the GPS_TYPE only shows possible option up to 15, and i don’t find the GPS_HDG_ENABLE param at all.

My Question now is :

  • What do i do to get these parameters?

Method 2

I could use the GPS-s and two antennas. My question now is -

  • Can pixhawk use two separate GPS in a moving base configuration?
  • How to set that up and calibrate it?
  • How to set up the parameters in pixhawk?

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Rover controled over internet

September 16, 2019, 6:54 am
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@sujgojo wrote:

Hi,

Recently I have decided to re-start my plan to build a remote controled rover which I can drive outdoor in our remotely located garden to look around, take pictures, videos etc. Last winter I was already able to control some servos with keyboard and have a stream over internet but to control a rover with key strokes is not that easy, so this year I have decided to use a framework like ardurover.
After a lot of reading I plan to use the following hw:

pixhawk 2.4.8 kit with M8N GPS
4wd rc car with low rpm dc brushed motor
4CH Hobbyking transmitter, receiver
some ESC coming from the rc car
RPI 3B+ as companion pc
RPI camera

the only thing I have to buy is the pixhawk kit, the others i have on the shelf and I try to reuse if possible.
I plan to install dronekit on the PI, connect it with the FC over mavlink and connect the RPI to the wifi lan in the garden then send signaling and video stream over internet somehow to the remotely located GCS where I have mission planner or some other sw running on a pc. As far as I can see, the rc transmitter will not be needed in the final setup, but might be useful when experimenting. So I don’t really want to buy a new and expensive one if it is not really necessary.

If I manage to do all this I will still need at the front end a kind of game controller/joystick/rc controller in hand to easily drive the rover.
Later I could also define routes to let the rover drive autonome.
I know it is quite complex for some one new in FC-s, but I will be happy to reach the target step by step. The only thing is what I would like to know if it is the right way of doing it.

Please leave comments if you think it is achieveble and whether the listed hw is suitable for this project.

thanks,

Peter

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Post-processing Heading from Gyro / Compass

September 18, 2019, 1:49 pm
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@vik748 wrote:

Hi,
We have extensive field data that has been collected while the compass was not correctly calibrated. Thus, the compass only reports values in range of 50-110 degs instead of the 0-360 degs. I have the raw XMag and YMag values extracted, and recalibrated by running a soft iron / hard iron calibration on it. I’d like to merge this back with the ZGyro readings using the same settings as on the pixhawk to get back the filtered heading estimates, is there a starighforward way to achieve this?

If not, can someone point me to where in the code this is performed on the hardware, so that I might replicate it in a Matlab / Python script.

Cheers,
Vik

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Control with two DC motors using ardurover

September 19, 2019, 4:43 am
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Skid Steering Mixing

September 19, 2019, 4:36 pm
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@Kravos wrote:

I recently switched over to dual joystick for manual control and noticed that the opposite throttle moves plus or minus ~100pwm when first giving power.

for example, I give power to throttle left 2000 pwm. throttle right neutral is 1500, but will jump to 1400 for a split second then go back to 1500. It happens to both sides.

I have verified that the transmitter is not mixing it. I have pilot_steer_type to value 1.
Running cube with 3.3.0

Thanks for your help!

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Battery sensor trouble

September 19, 2019, 6:40 pm
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Issue Controlling a Servo as a Servo in Auto

September 20, 2019, 1:43 am
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@Fishton wrote:

I am using a Pixhawk 4 with Rover 3.5 and want to set a servo to 1 of 5 different positions (1200, 1300, 1500, 1700 & 1800) when it hits a specified waypoint then HOLD that servo position until instructed change to the next PWM value at another specified waypoint.

NOTE - Yes, I have read the documentation - http://ardupilot.org/rover/docs/common-servo.html

I have GroundSteer and Throttle to output 1 and 3 respectively, and have the servo connected to output 4 as RCPassThru.
In Manual mode it works perfectly from the transmitter as seen in the Servo Output:

3

In Mission Planner I created a basic plan from my house with the following commands:-

1
1.jpg812×979 324 KB

Result:
When driving out the flight plan servo does not move as each waypoint is reached.

What am I missing here?

Thank you

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Arduboat Herelink

September 20, 2019, 2:12 pm
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@PauG wrote:

Hi,
I’m trying a new boat with this setup.

-Pixhawk Cube
-Herelink
-Bluerobotics T-100 + Basic ESC’s

Really want to do something similar as Randy’s boogey board.

It seems that everything is OK but the thrusters doesn’t spin anyway.

Ardurover firmware on Pixhawk

Any ideas?
Thanks so much

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Problems with pixhawk4 help me，please

September 23, 2019, 1:36 am
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Mission planner and GPS: NO GPS

September 24, 2019, 3:35 am
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@Andrea_Cecchetto wrote:

Hello,

I had just left outside more than 1h the Pixhawk 2.4.8 connected with GPS (ublox NEO 6M).

But Mission planner still saying NO GPS.

GPS has intermittent red light.

Are there parameters in the Mission planner to check and modify?

Or is the GPS not properly working?

Many thanks.

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Rover 3.5.2 released

September 24, 2019, 4:10 am
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@tridge wrote:

reference-frame-top-image
Rover 3.5.2 stable has just been released. This release has just one change in it for an important issue that can cause a board lockup with some I2C devices. While the issue is very rare, we thought it important enough to do a quick release of a new stable rover build.
There are no other changes since the 3.5.1 stable release. It is recommended that all users update to 3.5.2.

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RangeFinder selections missing

September 24, 2019, 8:25 pm
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@l3keen wrote:

Hello. I am using a Pixhawk cube 2.1 with the latest rover 3.5.2 firmware. I am attempting to add a tfmini plus lidar for obstacle avoidance but have been having issues getting mission planner to show that it is connected. The unit works just great with the benewake UI and when connected to the rover I can see that it is getting power but that is all. It is connected to telem2 and all the appropriate settings are in place based off of all the wikis.

So I have initially been using my laptop to interact with this but since connected it to my desktop for convenience. The issue I now have is that when selecting RangeFinder under optional hardware I get no drop down menu selections. I do have these menu options on the laptop but considering all the undo issues of not getting this to work maybe it was never really using the senor library at all? Hence no selection on my desktop? Any insight to this menu issue and over all getting this to connect correctly would be greatly appreciated.

image

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