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Thruster choice for Arduboat

January 7, 2019, 2:41 am
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@praveen_khm wrote:

Hi,

I am planning to make an autonomous boat. Here is what I have chosen till now:

  1. Boat will be made of aluminum and a mono-hull format (attached image)
  2. The size will approximately 4 feet and should be able to pull a weight of 80-100kgs in water
  3. The thruster should be a jet pump as per the attached image (RC Jet pump)

Now for the questions,

  1. The jet pump attached in the image is designed for small RC boats. I need anything which is little more powerful, but not expensive. Anyone has an idea of that kind of pump? If yes, please share your ideas.
  2. Am very new to boat building and have no idea on a boat. However, I have built robots in aluminum and will manage it. Would request any links with complete builds and your help as I will be posting the updates here. Also, please confirm if it is good to build a mono-hull or a multi-hull setup for the rough seas.

Thanks,
Praveen

jpg_640x640
1pcs-15mm-26mm-40mm-Water-Jet-Boat-Pump-Spray-Water-Thruster-2-Blade-3-Blade-Propellers.jpg_640x640.jpg640x640 82.9 KB

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Motor won't go backward

January 8, 2019, 4:32 am
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@Aureho wrote:

Hello everyone =) I face a problem I have a boat with 1 engine and a servo for the direction, the diretion is well taken into account in the menu servo output on the channel N ° 1, but when I put throotle that is on the N ° 3 the engine runs at mid revs , what I would like is that the engine is stop at neutra,l forward when I push the handle and vice versa for the back, could you help me accomplish this pls?

Best regards

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Garmin Lidar Lite V3 & Pixhawk 2.1 Problem

January 13, 2019, 12:36 am
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My 1st Rover Project

January 13, 2019, 12:18 pm
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@ArduNoob wrote:

Hi Everyone. I’ve decided to build a APM Rover from scratch and so far so good. I have purchased a rover & have successfully added the APM 2.8. I have wired the components as follows:

image

Because the transmitter is only a 2 channel I have now ordered the Flysky FS i6 for more channels to also provide the option to switch to auto mode once I setup a flight plan on Mission Planner.

What I’ve noticed is that it says on many tutorials that you can’t power servo’s and ESC’s through the APM but oddly enough I’m able to do this. Is this normal?

When I use power from the lipo battery directly into the ESC which then powers the APM it doesn’t function as well as when I power everything via the APM “which like I said you shouldn’t do”
I’m wondering why this is happening?

Any advice would be appreciated. Thanks in advance

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Motor driver connection

January 15, 2019, 6:47 am
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@tonyrjohnson wrote:

Hi All, The image on the rover page dealing with skid steering shows a two motor rover connected to the pixhawk via a motor controller. This is the configuration I am working on. But the image shows three connectors between the pins of the driver and the pixhawk pins 1 and 3. Now the motors themselves only have two wires red and black. Also the driver only has two pins that control speed and direction of each motor. Can someone help me with pin configuration. I had assumed the third was ground and so connected. My pixhawk smoked and burnt up and I am wondering if this is the reason, I had ground to the top pins. Do I actually need three wires?

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Circles again before reaching waypoint 1

January 15, 2019, 6:48 am
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Arduboat, best way to plan out smooth paths

January 17, 2019, 4:12 pm
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@jaygrovr wrote:

I am looking to use arduboat to run an entertainment boat that needs to do various paths throught the day on a manmade lake. Does anyone know if groundstation can coordinate all this and allow for very slow smooth movement. Accuracy is not as important as slow organic movement.

Thanks

jason

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Skid steering motor controller

January 18, 2019, 9:50 am
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@tonyrjohnson wrote:

The docs for rover skid steering indicate in the image a “motor driver” that sits between the pixhawk and the motors. I have a tank rover I got working with pi 0 and I used a l298 bridge for this. Can anyone tell me what the driver indicated in the image is, or what it could be? The drawing is not detailed enough for me unfortunately as it does not show which pins of the three shown in each motor go to which pixhawk pins. It indicates 1 and 3 in main out on pixhawk but I can’t make out which goes to which. In a previous post there was a suggestion to use maybe two Hobbypower Rc ESC 10a Brushed Motor Speed Controllers. I am sure that would work, but they do not match the image in the docs. Can anyone advise what was intended here?

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How to setup this type of rover

January 18, 2019, 12:36 pm
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@Matt_C wrote:

I currently have printed some test wheels (mercanum wheels) and was wondering if ardurover supports this type of wheel and if so how would one go about setting it up? Thank in advance for your help, done a lot with plane and copter but hardly any with rover so a bit new to a few things!

Wheels in action.

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Automatic start

January 20, 2019, 4:56 am
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@tonyrjohnson wrote:

Hi, I am still trying to get my rover working but already see an issue in that I want tit to start without some ground control hand held machine. Maybe on a timer or when it reaches “takeoff” point on gps. Long term I want the rover to sleep in a shed with a induction power charger and wake up on its own and run a GPS course then return to base and recharge. I guess a timer based would get me off in the right direction. Anyone any tips for this? It seems that everyone expect you to have a hand held machine to initiate start.

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Arming and Disarming my rover from RC

January 21, 2019, 3:17 pm
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@r.rakshak wrote:

I am having trouble arming/disarming my rover from RC.

I am following the documentation here.

I have tried both option 1 From the transmitter sticks and option 2 From a transmitter switch, neither of them arm the rover. I have no trouble arming the rover from Mission planner, so I know it is passing all the pre-arm checks. I have also checked that my rover is in Manual mode.

I would prefer to use a transmitter switch to arm/disarm my rover so I tried following the instructions here but the Ch7 opt dropdown is greyed out.

I have set up a switch to transmit on channel7 and when I flip the switch, I can see a response on Mission planner (under Initial Setup->Radio Calibration) in the Radio 7 Bar on the Radio calibration screen.

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Rover-3.5.0-rc2 is available for beta testing

January 23, 2019, 4:56 pm
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@rmackay9 wrote:

Rover-3.5.0-rc2 has been released for beta testing and can be downloaded using the ground stations’ “Beta Firmwares” link. The changes are in the release-notes and also copied below:

Changes from 3.5.0-rc1

  1. ChibiOS fixes and enhancements to many boards including Pixhawk4
  2. EKF failsafe added and checked before entering autonomous modes
  3. Object avoidance enabled in autonomous modes (Auto, Guided, RTL)
  4. Cruise speed/throttle learning always runs for 2 seconds (saves user from having to lower switch)
  5. Boats hold position after reaching target in Auto and Guided (also see MIS_DONE_BEHAVE)
  6. MAVLink message interval support (allows precise control of mavlink message update rates)
  7. Bug fixes and minor enhancements:
    a) DShot ESC support
    b) Auxiliary switch 7 parameter copy from CH7_OPTION to RC7_OPTION
    c) Wheel encoder offset fix
    d) SmartRTL default num points increased to 300

I think this should be quite close to a final version we could release as the official version so any testing people here can do would be greatly appreciated. If you see any problems please post them here or in a new topic in this Rover-3.5 category.

Thanks!

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Ch7 Opt menu not available

January 26, 2019, 7:14 pm
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@Tractor_Pilot wrote:

Hello. I’ve just installed the latest version of mission planner but I can’t save waypoints as the Ch7 Opt menu is not available and hence is set to “nothing” on the basic tuning screen. Just wondering if anyone else has come across this problem and can point me in the right direction (no pun intended!). I have just loaded the 3,5.0-rc2 Beta rover firmware for testing and I updated the Mission Planner to 1.3.62.

Any help much appreciated.

Thankyou.

Stephen

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VESC SIX esc with Pixhawk

January 29, 2019, 5:00 am
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Newbie : Pixhawk, ArduRover, Throttle-Server very slow

January 29, 2019, 9:49 am
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@LunaX wrote:

Hi folks,
I’m new with Ardupilot (and in general with FC) - and I do not found any similar forum entries for my current issue -

Behaviour:
MacOS, APM Planner 2.0.27, Pixhawk 2.4.8, installed firmware ArduRover 3.4.2., radio Taranis x9d+, receiver: FrSky X8R.
Taranis configured without any special things - no expo on channels a.s.o. Via switch arming/disarming configured and via 3-point switch changing flight modes.

Only for testing issues (first step), I installed two servos on my Pixhawk (ch1 Steering, ch3 throttle).

If I arm the system, it is possible with the steering stick to “move” the servo at normal speed - but if I do the same for throttle, the servo is extremely slow. I changed MIN/MAX values inside configuration and I tried to change SERVO_RATE - but without fixing my issue.

I have no idea what I’m doing wrong. If I check inside APM planner my radio (radio calibration), it seems every thing is ok. If I move sticks and switches I get response and see it inside this calibration screen.

As we say in german “Ich bin am Ende meines Lateins” :wink:
Hope somebody can help me - and as I said - I’m an ArduPilot-Newbie :smile: Cheers
Bernd

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Lidar RPLIDAR A2 setup on Pixhawk cube

January 30, 2019, 3:42 am
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@ecabanas wrote:

Hi all,

I would like to ask for help in the assembly and setup of my A2 lidar with a pixhawk 2.1
I have wired the following way to telemetry port 2
image
The parameters:

  • [SERIAL2_PROTOCOL] = “11”
  • [SERIAL2_BAUD]= “115”
  • [PRX_TYPE]= “5”
  • [PRX_ORIENT]= “0”
  • [BRD_SER2_RTSCTS]= “0”
    But in Mission Planner’s proximity viewer there is no information there

I’m not sure if I did something wrong, do I have to arm before? and put in auto mode?
The lidar has power because the rotor turns perfect

Thank’s for your help

Eduard

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Please Reboot the Autopilot Compass Calibration

January 30, 2019, 11:40 am
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@jlowe2013 wrote:

I have just calibrated the mag for the pixhawk4 compass and the window saying “please reboot the autopilot” appeared but I am unsure how to actually reboot the autopilot. When I hit okay on the window and switch to flight data it deletes the calibration. I have tried powering the pixhawk off, disconnecting the telemetry connection, and resetting mission planner all with no success. Any help would be appreciated.

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My rover doesn't move in AUTO mode

January 31, 2019, 6:56 pm
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@Ryota wrote:

Hi, I’m new to here. I constracted my rover based on the web site http://ardupilot.org/rover/index.html . However, when I turned my switch to auto mode, it didn’t work and “Bad compass health” message was appearing. I tried to calibrate compass many times, but it didn’t solve the problem. And I have another problem. When I use manual mode, throttle doesn’t work well. When I push throttle bar forward and then switch it to back quickly, my rover doesn’t move. If I swith throttle bar neutral and wait for a few second before I switch the bar to back, my rover go back.
I’m using separated steering and throttle method, Pixhawk 2.4.8, Ardurover V3.4.2 firmware and Ublox NEO M8N GPS reciever.
What should I do to solve these? Please help me…

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Skid Rover setup Problem

February 2, 2019, 10:22 pm
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@rotems wrote:

Hello,
I’m trying to setup a skid rover as in documentation but it seams like the servo output stop following the RC input and I don’t understand why.

Please your help
Thank you
Rotem

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Wheel Odometery data to Navio2

February 5, 2019, 6:00 am
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@rajekno wrote:

ArduPilot version : 3.2.0

Hello,
I am using Navio2 for development of skid steering rover. The rover used for autonomous navigation using GPS and IMU. To improve accuracy I wanted to integrate wheel odometry data to Navio2 to improve the accuracy. However, Navio2 does not have any provision for AUX input where we usually provide wheel encoder information in pixhawk.
Encoder details: https://robu.in/product/orange-1000-ppr-ab-phase-incremental-optical-rotary-encoder/

Can somebody help me to integrate wheel Odom data to navio2? Is there a hardware limitation to integrate wheel encoders? If so, is there is a method to create a ROS node to compute the odometry information and relay back to ardupilot?

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