ArduRover User Group

Dedicated to the exchange of useful information between members using the Arduino or other families of processors for autonomous rovers.

Members: 366
Latest Activity: 12 hours ago

Before Posting an Issue

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:

  • Describe the problem you are having. What is the expected verses the observed behavior?
  • Provide hardware information such as the brand and version of your autopilot, GPS, radio, and compass, as well as any other pertinent details about your rover setup.
  • What version of the APM: ArdurRover2 firmware version are you running?
  • For navigation issues, provide your tlog and/or dataflash log. Click here for instructions on retrieving a dataflash log.


Discussion Forum

new PIXHAWK APM will not do anything in Auto Mode

Started by heliboy. Last reply by Thomas J Coyle III yesterday. 7 Replies

Hi All:Decided to bite the bullet and upgrade to PIxhawk. Got everything and everything went smoothly.Used Futaba sbus link from RX to PixHawk. Works fine. CH1 CH2 for speed and steering CH7 - learn…Continue

How to Install Dual Sonars on a Pixhawk

Started by Thomas J Coyle III. Last reply by Thomas J Coyle III yesterday. 16 Replies

Hi All,I just completed installing dual Maxbotix MB1240 sonars on one of my Pixhawk equipped rovers.Since the sonars were from an APM equipped rover they already had single pair shielded cables…Continue

Tags: install, Pixhawk, dual, sonar

Motor activation in auto mode

Started by Raimo Noormaa. Last reply by Raimo Noormaa yesterday. 8 Replies

Hi, I'm having problems with activating motor in auto mode. All works well in manual and learning mode. When I activate auto mode with "flaps" 3 pos switch, steering servo starts to move, MP shows…Continue

Need RC PWM signal to 0-5 volts for my robot.

Started by Gary McCray. Last reply by Swift on Sunday. 36 Replies

Hi,I am building (slowly) a 2 wheel hanging pendulum robot that uses 2 26" Bicycle wheels and Kelly reversing controllers.The problem I have is that the controllers use a pot or 0-5 volt input for a…Continue

Tags: RC, PWM

Comment Wall


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Comment by Lake McGuire on May 11, 2013 at 4:36pm

I GOT IT!  Somehow, the Mode Channel in the Advanced Parameters list was looking for channel 8 versus Channel 5.  I have no idea how that happened, but I didn't change it.  Weird...


Still no luck with the right side being slow.  Is it possible that wiring is loose?  Doesn't seem like that would effect performance as I would think it's pretty binary.  Thoughts?

Comment by Lake McGuire on May 11, 2013 at 4:29pm


  1. Still no luck with having it kick into Auto mode.  Verified again that the different modes are selectable and that the lowest one is set to auto.  Have waypoints set up and a GPS signal.  Motors do nothing when in that mode.  I can move manually though....Any more thoughts?


  1. Ailerons only go from 1109 to 1911.  I'll look at the sabertooth instructions again...
Comment by Lake McGuire on May 11, 2013 at 3:45pm

Solved #3... just rebooted and reset...  Still need help on 1 & 2...

Comment by Thomas J Coyle III on May 11, 2013 at 3:35pm


1) It sounds like you have not calibrated your transmitter in relation to the Sabertooth ESC. I believe that the Sabertooth has an option for auto cal at startup. You should check the Sabertooth operating instructions. Also, have you made sure that both your elevator and aileron joysticks do not have any offsets. In other words your trim values for elevator and aileron is "0"? Also, does your aileron bar in the radio cal go from about 1000 to about 1900 so that the aileron output is reasonably symmetrical about the neutral point. Same for the elevator bar .

2) Are you using a 3-way switch to set modes manual, learning, and auto? If you are is the lowest position does the MP indicate auto when the switch is in that position? You might want to put your rover up on blocks and initiate the auto mode and make sure it does really go into the auto mode.

3) There is a level function in the CLI setup. Use the Terminal Tab to get into the CLI. Type in "setup". When you are in the "setup" function, type "level". Before you hit return, use a bubble level to ensure that your rover is level in the X-Y planes. Then hit return and wait for the CLI to go through the level process.

Hope this helps.



Comment by Lake McGuire on May 11, 2013 at 3:12pm



I've just received and built my final product after messing around with a smaller version.  I've built a Gears SMP Platform with the APM2.5.  It has 4 independent DC motors; (ie. skid steering).  I am using a Sabertooth 2 x12 motor controller w/R/C input jacks.  I have 2 issues going on that I could use help with please:

  1. When in reverse, the right side motors seem to lag more than the left.  Also, if turning to the right hard, the right side go slower in reverse than if I were to turn hard left going forward.... 
  2. For some reason, I can't get autopilot to run after I've set waypoints in the Mission Planner and uploaded them.  I've checked the flight mode settings, checked the radio calibration and matched them up.  I had a smaller version working perfectly....
  3. I've also noticed that in mission planner, the APM thinks it's banking about 30 degrees to the right, but it's laying flat in the rover.  I've double checked mission planner to make sure that the orientation had nothing changed there....

Thanks for any and all responses in advance!

Comment by KM6VV on May 8, 2013 at 4:12pm


Brief look, the store looks more complete and I see some shipping options.  I'll try it out fully later.


Alan KM6VV

Comment by Joshua Ott on May 8, 2013 at 2:48pm

Alan, that sounds like it was the old store. We have just taken it off line. Will you verify that you are on the new store:

Comment by Thomas J Coyle III on May 8, 2013 at 2:07pm


Have you pmed Joshua Ott, who is the new Editorial Director and I believe is responsible for the various websites, about your problem with the 3DR store?



Comment by KM6VV on May 7, 2013 at 4:58pm

I am trying to order,

only pre-paid Fed-eX, no UPS or USPS ground.

No PayPal

Now they don't have the cables I wanted to order.

Alan  KM6VV

Comment by Thomas J Coyle III on May 7, 2013 at 4:31pm


You will have to register a new account. I used my same user id and password as here.




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