RoboSavvy Forum

Can't get the servo to work (Linux)

2009-12-15T11:26:14+01:00

HI
1.Yes,you can run all RoBoIO functions as a root.
2.That is normal about the same voltage.Because the power line on RoBoard is connected to servo 'Vxx' pin.
3.The voltage of power supply should be based on the required voltage of servo that you used.If it is 6V,then the voltage of power supply is 6V.(NOTE:Do not exceed the voltage range of RoBoard.)

Statistics: Posted by roboard — Tue Dec 15, 2009 11:26 am

Can't get the servo to work (Linux)

2009-12-11T21:49:45+01:00

Thank you very much!

Using sudo, I was able to initialize the servo. I did not have enough time to test the RoBoIO this morning. I will do more test when I get home this afternoon. By the way, was this root privilege requirement documented somewhere?

One more question. To use the servo, should I use 6V power supply?

Statistics: Posted by crane — Fri Dec 11, 2009 9:49 pm

Can't get the servo to work (Linux)

2009-12-11T13:04:59+01:00

Please ensure you log in as a root that can run RoBoIO and try again.

Statistics: Posted by roboard — Fri Dec 11, 2009 1:04 pm

Can't get the servo to work (Linux)

2009-12-11T00:24:22+01:00

I also measured the voltage at the 'vcc' pin of the servo pin, and it read exactly same as the power supply voltage. In my case, I was using 12V. Is this normal?

Statistics: Posted by crane — Fri Dec 11, 2009 12:24 am

Can't get the servo to work (Linux)

2009-12-10T10:35:50+01:00

I am running ubuntu 9.10 with 2.6.29.1-vortex86dx kernel

I am trying to test rc servo but looks like the initialization fails.

I have tried the simplest code.

servo.cpp

Code:: #include #include int main(void) { if (rcservo_Initialize(RCSERVO_USECHANNEL0)) { printf("Initialized. Channel 0\n"); rcservo_Close(); } else { printf("Initialization failed\n"); } return 0; }

(some how, this message board removed the ".h" from my includes. In my actual code, it is and . I don't get any error message while compiling or linking.>

$ gcc -c servo.cpp -I./libsrc
$ gcc -o servo servo.o -L. -lRBIO -lstc++
$ ./servo
Initialization failed

I tried different channels and but all of them do not work. I have also tried all the possible bios settings...

Any help would be greatly appreciated.

Statistics: Posted by crane — Thu Dec 10, 2009 10:35 am