Dedicated to the exchange of useful information between members using the Arduino or other families of processors for autonomous rovers.
Hi All,
Before posting an issue or a problem in the ArduRover Discussion Forum, please check the wiki table of contents, review the firmware release notes in the subforum, and search that subforum for existing answers to your question. Help avoid duplicate threads by finding other members with the same issue and their solution.
When formulating your post, use a descriptive title such as "rover will not navigate to waypoints in the Auto mode" (not "HELP!" or "Problem").
Please include the following information to help diagnose your query:
TCIII
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Hi, i am looking to build a new rover, but i need some advice on the chassis. I like the 4wd chassis/tank look and prefer it over the crawler/rc look.are those any good though? most people recommend crawlers.I am looking to get something from banggood, any advice will be highly appreciated. thanks
Read more…Hi all, I have a skid steer robot using a pixhawk cube, one 1x15 roboclaw motor controller and a dagu wild thumper 4 wheel chassis. I have skid steering working so far, testing motor c and motor d tests works as described and the vehicle can be controlled in manual mode. However, upon using any mode other than manual mode the rover wants to shake and pivot on the spot, and it seems the steering PID controller oscillates and these oscillations get larger. i have tried everything but it is still…
Read more…Hi,I have converted a Traxxas X-Maxx into a rover using the Pixhawk Cube 2 controller kit with a Here GNSS.I swapped out the original X-Maxx remote controller for an X6R receiver and Taranis QX7 radio.latest version of ArduRover firmware installed as of 8/11/18. The rover has an EZRun Max6 ESC. The problem now is the ESC control over the transition into reverse. The ESC is currently set to it's Running Mode Option 2: "Forward/Reverse with Break", AKA the "Double Click Method".What this mode…
Read more…Hi all.I know this is an Adurover group, but Thought I would reach out and try my odds for some help as I'm perplexed by this problem. I have a Traxxas X-Maxx set up with a Pixhawk Cube 2.1 and the Here GPS. I'm using a Tarranis X7 remote controller and a X8R Sbus Receiver. I'm using QGroundControl with the latest, Pixhawk 1.8.0 Firmware with the Generic Rover airframe profile installed. As instructed, I have Steering servo wired into Main 2 and Throttle ESC wired into Main 4. Sensors are…
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Comments
@Bot,
Robomagellan at RoboGames. OK, WGM84 is a map datum. I'm sure we all use it. The accuracy of the waypoints could depend on the GPS used. And when.
Alan KM6VV
@KM6VV - are you looking to do the Chibots, RoboGames or another Robomagellan? The RoboGames one says they give you coords with WGM84 (but yeah who knows how accurate the position is, how it was measured, etc) with precision carried out to the thousandths of minutes place.
@Thomas,
Yeah, I remember you saying something like that. Kinda leaves me out until stuff gets fixed.
Connected per manual, maybe I don't see anything because I'm still on the bench.
Alan KM6VV
@Alan,
I have found that MP versions higher than 1.2.29 due not work well with v2.20b and pre-HAL versions of v2.30 alpha.
As far as the R/C receiver's inputs into the APM, RTFM.
Regards,
TCIII
The NTK receiver must have steering and throttle outputs. Did it follow a set of waypoints? Must be more then just a receiver!
v2.20b, does the MP make any difference?
Sounds like success!
What APM channel does the gear switch use? I could get an input, but didn't see any waypoint action (but I was on the bench).
Alan KM6VV
Hi All,
Today I decided to test the ArduRover2 learning function. I am presently using a Spektrum DX7 R/C transmitter that has a 2-way Gear switch and a 3-way Flap switch. I use the Flap switch to set the ArduRover mode and the Gear switch to designate a waypoint when in the learning mode. The Gear switch must cause a low to high to low transition for a waypoint to be logged in the APM memory. That means going from a PWM value of ~1100 to ~1800 and back to ~1100.
I ran my rover on my local short course out in front of my town home. Using the Gear switch I recorded seven waypoints as I drove the rover around a long, narrow rectangle. At the end of the course I was going to bring the rover in to see if it had recoreded any waypoints as ArdurRover2 v2.20b did not record any waypoints when in the learning mode. However I decided to put the APM in the auto mode to see what would happen. The rover hesitated a moment and then took off on the course I had recorded previously in the learning mode. The rover completed the course and returned virtually to where it had started. Nothing like the sweet smell of success!!
Now, if Tridge can get the IR sensor obstacle avoidance working we will have a baseline from which to begin to add enhancements.
Regards,
TCIII
RTK is accurate to within 2cm but very expensive costing approx €10,000.
I was at a farm machinery show last week and there was a guy selling a Differential GPS system, FARMNAVIGATOR from SatconSystem. He claimed it was accurate to within .5 of a metre. The whole system is about €1,300 but he said the receiver sells for approx. €300 which I thought wasn't too bad. He wasn't able to give me any info on how it might be connected up to a microcontroller.
RTK is used for surveying and precision farming, what do you know about it?
Alan KM6VV
Is RTK an option?
Matt
@Bot,
A few degrees would be good. And if nothing was seen, then the camera could pan. I like that.
Sanity. If one had to scan, then a 2nd limit (a ways outside the circle) could be imposed, to drop the dog legs.
I'm told we get a list of all waypoints, (start and goal included) to start with. But what GPS model were they read with? Why I'd prefer to use my own. That, and to limit the errors in entering the waypoint data.
Alan KM6VV
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