@Davide wrote:
Hi everyone, i'd like to know if is possible to connect Pixhawk PX4 with a powerful linear actuator like this:
http://www.robotstore.it/product/322/Attuatore-Lineare-IP63-102mm-con-motoriduttore-20-1-12V-1.3cm-s-50Kg.html
I need this actuator to steer my rover. How can i connet this actuator to Pixhawk?
thanks a lot
Merry Christmas and a Happy new year to everyone!!
Davide
Posts: 3
Participants: 2
@J.Leite wrote:
Hi
Does any one has experience using a regular 5W radio Link that works at same baudrate as the 3dr radio that comes with the Kit Autopilot32 ? This is a regular data link radio that works via RS232, I am not sure if I can use a different radio to connect my boat with the computer. If some one could give me some directions I would appreciate.If I can not, there is any way I can amplify the 100mW that comes with the Kit?
Thanks
Posts: 4
Participants: 3
@secondsky wrote:
Hi all, i would like to know if would be possible, on with the arduRover modality, control a boat with a symmetrical motor configuration, like with two motor in the front and two in the back, so without a true fore and aft.
Is there some tool to set an engines system not conventional, or it require some deep fork in the existing code?
Thank you all!
Posts: 1
Participants: 1
@David_J wrote:
Hello everyone. I'm starting a project with baitboat. I have looking for gps for my boat but original gps system for baitboat costs over 500€.
I'm guessing if I use ardupilot 2.6 but without connected outputs for servos will that be working?
I must drive boat by myself only thing what I need is that boat is shown by my smartphone that can I drive more times to same location.
Any suggestions?
Help is greatly appreciated.
Thank's
David
Posts: 3
Participants: 2
@J.Leite wrote:
My boat is actually today using 2 motors for speed and steer. I was wondering if there is a way I can use a third motor in the boat to increase speed with less battery consumption. There is any one tried to use this configuration? There is any one that could give me ideas on how to implement the configuration on the channels to add the third motor?
Posts: 1
Participants: 1
@rainwf wrote:
I just began evaluating ArduRover for a possible boat application. Before selecting hardware, I have chosen to user apmplanner2 (2.0.24), SITL, and MAVProxy to learn about the rover software. Just to confirm, I am running 3.1.0 software. I created a mission with several waypoints, the last being a final destination. Before the last waypoint, I inserted a DO_SET_REVERSE command.
When I run the mission with the default rover.parm file, the mission runs fine. When I run it with the rover-skid.parm file, it arrives and the next to last WP, switches to reverse, orients the rover properly and then crashes before proceeding to the final waypoint,
As far as I can tell, the parm files only differ in the value of SKID_STEER_OUT=1.
Picture a rover navigating through a parking lot, arriving at a WP in front of a parking spot, changing to reverse and backing into the parking spot as the final WP.
I tried reducing the speed to 0 before the DO_SET_REVERSE, and back up to speed after. It stilled crashed.
Am I missing something fundamental? Still learning about the logs, so input would be appreciated.
Fred
Posts: 1
Participants: 1
@Sagaris wrote:
I want to do some experiments with Pixhawk on my car. I think it's necessary to make compass calibration to have correct heading, because of large metal body of a car. How can I calibrate compass on it? Is there any workaround about calibrating compass on large vehicles that can't be rotated against all axis? May it be done with two step calibration: one with common calibration procedure without car and second with common procedure inside a car in the same place and then somehow subtract offsets? After that I think autolearning may help.
Posts: 1
Participants: 1
@LCJ_Capteurs wrote:
CV7SF is a wind sensor from LCJ Capteurs.
Wireless, with no moving parts, and self-powered, it spectacularly simplifies installation making it ideal for applications where running a cable is difficult or impossible. One of its advantages is to simplify installation on elevated sites for measurements where the wind is free and unobstructed.
CV7SF combines advanced technologies: ultrasonic measurements, solar power supply, wireless digital transmissions, super-capacitor for electrical energy storage.The CV7SF wind sensor integrates a radio transmitter, a photovoltaic cell and an energy accumulator.
A measurement of wind speed/direction and temperature is transmitted for a short time interval of 25 ms at an average rate of 1 second during the day and 15 seconds during the night to cover a 15-hour night.
The radio signal is remotely received by a receiver/decoder box and formatted, providing standardised messages directly usable by computer USB or COM ports or by specialised navigation displays.All LCJ Capteurs are designed and manufactured in the Nantes region in France where they are fully tested throughout the manufacturing process.
Posts: 2
Participants: 2
@D_S_S wrote:
This message appears on my NP Flight Data screen. (Pixhawk autopilot)
What does it mean & what should I do?
*Noted that in another thread it was suggested to swap out the SD card.
I put in a new SD card and the problem went away
Posts: 1
Participants: 1
@SylvanH wrote:
Good afternoon,
I am working on a customized version of Ardurover (from the 3.0.1 version). I added libraries to handle my own communication protocol and modified others (like AP_Mission) and I come here because I have a very weird issue.
As information, I work with Eclipse environment from the PX4 toolchain.
My problem is as follow :
- In AP_Mission, I added a variable mission_id. This id is saved in the EEPROM and is loaded in a private variable missionid.
-A new library AP_Modem checks the available bytes from my radio : it counts how many bytes have been received with nbbyte_received.Up until now, missionid was 1-byte long (type uint8_t) and everything was working fine.
I want it to be 4-byte long and so I changed the type from uint8_t to uint32_t. The consequence (as far as I have diagnosed) is that the variable nbbyte_received is resetted without reason (no calls are made to the existing functions of reset).After searching, reversing and redoing everychange one by one. The only change that generates this weird reset is changing the type of missionid from uint8_t to uint_32.
So I come here to find some explanations if there is or some advise on what to check.
I'd like to check the memory usage but I don't know how.
Thank you in advance.
Sylvan.
Posts: 1
Participants: 1
@orozcojl wrote:
Hi!
We have tried to install APMrover2 with Mission Planner and Ubuntu terminal on using make Pixhawk2 with no success. Has anyone installed APMRover2 firmware on a Pixhawk2?
V/R
Jose L. Orozco
Posts: 3
Participants: 2
@paladin66 wrote:
Hello
I'm building a big quadcopter and i have :
4 motors Rotomax 80 CC (https://hobbyking.com/en_us/turnigy-rotomax-80cc-size-brushless-outrunner-motor.html )
4 ESC MONSTER 2000 ( https://hobbyking.com/en_us/turnigy-monster-2000-200a-4-12s-brushless-esc.html)
1 Flight Controler Pixhawk PX4 ( https://hobbyking.com/en_us/hkpilot32-autonomous-vehicle-32bit-control-set-w-power-module.html)
1 Battery 48v / 21 AH ( http://www.cycloboost.com/batteries-lithium-velos-electriques/batterie-electrique-pvc/48v/batterie-48v-21ah-cellules-lg-pvc-chargeur-3a.html)How can i plug pixhawk + 4 rotomax 80CC + 4 ESC MONSTER 2000 + battery 48v / 21AH in order to get my quadcopter running perfectly ?
Best regards
Posts: 2
Participants: 2
@lzuehsow wrote:
Hi all,
Been having an odd problem for a while now with my rover- I can only drive in straight lines in STEERING and AUTO mode. The motors will not even twitch when moving the roll stick back and forth.
I tried decreasing the controller deadband for various channels and toggling the REVERSE boxes on ROLL and THROTTLE first individually, and then both together.
RC_DZ doesn't seem to have an effect. Toggling one REVERSE box makes the robot only able to turn in STEERING mode instead of going continuously straight. Toggling both means controls are reversed, but the robot can still only go in a straight line.The rover drives fine in Manual; no turning problems whatsoever.
Rover is a T-rex shell with a Sabertooth 2x12 motor controller and a Pixhawk nav system. Sabertooth DIP switches 1-6 are set to DOWN, UP, DOWN, DOWN, DOWN, UP. SKID_STEERIN is 0 and SKID_STEEROUT is 1.
All necessary calibrations have been completed (controller, accelerometer, etc.) and there are no warnings on arming.
I'm using the newest version of Mission Planner as my UI. (1.3.44)Any tips?
1 1-29-2017 6-31-02 PM.bin (1.6 MB)
1 1-29-2017 6-31-02 PM.bin.log (3.3 MB)
Posts: 7
Participants: 3
@gmorph wrote:
We did a small but critical bug fix in Rover and we have released Rover 3.1.1. The symptom would if you are using Spektrum receiver IO just locks at current outputs, so motors would stay at constant output, and be uncontrollable. Those Spektrum users I suggest you upgrade. Any problems please let us know.
Thanks, Grant.
Posts: 1
Participants: 1
@J.Leite wrote:
Every time I use the Auto Waypoint, Simple Grid, the Mission planner generates two points in each Conner, I notice that if I increase the Overshoot those points separates from each other, but I tried a way to not generate those points and could not find a way to eliminate them. Does any one know if I can generate my lines with mission planner without those duplicated points on each conner?
Jader
Posts: 2
Participants: 2
@antimattercrusader wrote:
So I've been reading on these forums (here and DIYDrones) and have found a lot of cool knowledge and info, its helped answer some questions and spur some creativity! Now, I am trying to get into building arduboats for bathymetry and/or water quality analysis and want to share a design and setup in case it may help someone else with their projects, and to gain any input anyone may want to share.
I am calling this one the HarborMaster or perhaps HarborScan. I don’t know for sure yet. It one of 4 designs and my favorite – this one is 6ft long, made of 0.08 5052 Tig Welded Aluminum, is powered by a 30lb thrust trolling motor and dimension engineering Syren controller – of course with Pixhawk with ArduRover firmware.
The telemetry is a 500mw 900mhz link, paired to an on board Windows 10 SOC. The USB side of the telemetry can be plugged into base station laptop for traditional RF-Mission Planner control, or plugged into the SOC which works work with a hotspot and Amazon EC2 instance to relay the signal over cellular. The boat also runs Skype and has a Logitech C920 camera in a 3D printed housing, so in areas with good LTE, very high quality video is possible. When operating with a remote from the video feed, the lag is surprisingly minimal, maybe around 200-400ms.
The design is deep/tall with a lot of freeboard, primarily because I wanted to have the option of installing a tall Group 29D 120ah lead acid battery for longer missions, which provides >20hr endurance. That’s a pain to carry though, so typically I use a 40ah 4S LiFeP04 battery which gets around 10hrs.
I've installed a Lowrance sonar unit and may also add water quality sensors such as dissolved oxygen, ph, conductivity and temperature but this is a new area to me, have some learning to do.
I’ve also installed a 750gph bildge pump just in case there are any issues… it just hit 250 hours on the clock last weekend, so far so good, no breakdowns - though I did run the battery dead once and one time getting stuck in a thick patch of seaweed.
Anyway, if anyone has any suggestions, or has any questions on the setup, wants to bounce ideas around – post here! Happy to share and learn.
Here are some pics of other designs, which is not as well tested yet, but so far seem to perform well!
Posts: 22
Participants: 6
@IdlePhase wrote:
Hi folks, I'm wondering where I could find documentation for which messages are in each data stream. I have found the definition in the streams in the MAVLink C library under
"message_definitions/common.xml" however this is the common definition and I do not know where to find the specific data stream grouping used by the autopilot for the ArduBoat rover firmware. I am operating with Rover v3.1.0beta3 and working to communicate with my Arduino to PixHawk but having difficulty receiving all messages I would expect from the MAVLink documentation.I also noticed the documentation highlights that data_stream is deprecated and one should use new messages instead, however I had also read that the Rover still implements the old message types.
I would really appreciate if someone could point me in the right direction to better understand the streams which are sending the specific messages I want.
Thanks!
Posts: 2
Participants: 2
@gsprince16 wrote:
I recently purchased a small round tire inspection bot from Superdroidrobots, and it came with a Saber tooth motor controller which worked well. I installed my Spektrum RC/TX and it was good to go.
BUT
My plan is to install the Fathom X advanced electronics package in the bot (which I already purchased and includes a Raspberry PI & Pixhawk) so that I can tether it with a cat 5 cable for the video output which works very well, and control the bot with a xbox 360 or other device.
I can connect all of the Fathom X hardware but I'm lost when it comes to figuring out some basic wiring and getting power to the motors, so if you have experience with this or something similar I would appreciate it if you could lend some expertise.
Just found out that Ardusub program won't work with the crawler so I have to install the rover software.
The photo is a basic plan I have so far
Do I need to hook up the motor leads to a terminal block?
Thanks!
Posts: 1
Participants: 1
@RayN wrote:
I currently have a Pixhawk installed on an Actobotics Nomad. I uploaded the Rover firmware (v3.1.1) through Mission Planner. I enabled Skid Steering through the Basic Parameters Tab. I am using a Futaba T10J with a FrySky Delta 8 receiver which is outputting CPPM. Calibrated the compass, accelerometer, RC input and modes. Went through all the recommended initial setup.
When I initially tried to arm the Pixhawk by holding the Throttle centered and then Steering hard right (as suggested in the documentation), it didn't arm at all. I then disabled ARMING_CHECK, guessing that it wasn't able to get through one of the checks. And yet it still won't arm. I disabled the Safety Switch to see if that would help and again it won't arm. So I disabled SKID STEERING (IN and OUT) and now it arms with the throttle down at about 1100 and steering hard right. However it does not disarm, with the throttle at 1100 (LOW) and steering hard left. It still does not arm in the Skid Steer mode, which is essential for this chassis, which doesn't have traditional steering.
A few additional things to note. I tried a different receiver and transmitter setup (DX6i with R615X receiver) and the same problem persisted. I uploaded Quadcopter firmware through Mission Planner to see if the arming issue was present with other types of firmware. With the Quad Firmware, the board armed with absolutely no issues whatsoever.
I am new to the Pixhawk platform and any help would be greatly appreciated. I've tried to methodically troubleshoot this for the last week and have hit a dead end.
Posts: 1
Participants: 1
