Motors causing power disturbance?
anonymous 2014-11-30 07:18:36 15350 Views29 Replies Hi All,
I'm building up this kit [url=http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2157124_-1]http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2157124_-1[/url]
when i run the robot, i see the activity light in the ultrasound sensor keeps lit instead of periodic flashing and the servo is showing spurious activity. This happens only when the wheel drive motors are running. I tried the motors to run in series and parallel combination. I tried removing the vin=m_vin jumper and individually powered (motors from battery pack and romeo from usb). still whenever the motors are running the sensor activity keeps lit (or high frequency blinking not as expected from the code).
Does this point to a faulty board? any other suggestions please.
Thanks in advance
I'm building up this kit [url=http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2157124_-1]http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2157124_-1[/url]
when i run the robot, i see the activity light in the ultrasound sensor keeps lit instead of periodic flashing and the servo is showing spurious activity. This happens only when the wheel drive motors are running. I tried the motors to run in series and parallel combination. I tried removing the vin=m_vin jumper and individually powered (motors from battery pack and romeo from usb). still whenever the motors are running the sensor activity keeps lit (or high frequency blinking not as expected from the code).
Does this point to a faulty board? any other suggestions please.
Thanks in advance
2014-12-09 09:05:44 i tried connecting that to a different pin without pwm and observed same result. and BTW i have to add, the motors doesn't have capacitors across the terminal. 
anonymous
anonymous 2014-12-09 09:05:44 i tried connecting that to a different pin without pwm and observed same result. and BTW i have to add, the motors doesn't have capacitors across the terminal. anonymous
anonymous 2014-12-09 09:05:44 i tried connecting that to a different pin without pwm and observed same result. and BTW i have to add, the motors doesn't have capacitors across the terminal. anonymous
anonymous 2014-12-08 07:58:46 Hello akgalp,
Sorry for the late, I'll test it on Monday. And if you get anything, please let me know.
Grey.CC
Sorry for the late, I'll test it on Monday. And if you get anything, please let me know.
Grey.CC 2014-12-08 07:58:46 Hello akgalp,
Sorry for the late, I'll test it on Monday. And if you get anything, please let me know.
Grey.CC
Sorry for the late, I'll test it on Monday. And if you get anything, please let me know.
Grey.CC 2014-12-08 07:58:46 Hello akgalp,
Sorry for the late, I'll test it on Monday. And if you get anything, please let me know.
Grey.CC
Sorry for the late, I'll test it on Monday. And if you get anything, please let me know.
Grey.CC 2014-12-06 16:45:15 can someone (or dfrobot) can confirm this behaviour of romeo?
i need to make sure the romeo board is not faulty
thanks
anonymous
i need to make sure the romeo board is not faulty
thanks
anonymous 2014-12-06 16:45:15 can someone (or dfrobot) can confirm this behaviour of romeo?
i need to make sure the romeo board is not faulty
thanks
anonymous
i need to make sure the romeo board is not faulty
thanks
anonymous 2014-12-06 16:45:15 can someone (or dfrobot) can confirm this behaviour of romeo?
i need to make sure the romeo board is not faulty
thanks
anonymous
i need to make sure the romeo board is not faulty
thanks
anonymous 2014-12-04 13:09:20 [quote="Grey"]
Hi,
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device.
[/quote]
I not sure i understand you correctly. The sensor is already connected to D9 anonymous
Hi,
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device.
[/quote]
I not sure i understand you correctly. The sensor is already connected to D9
anonymous 2014-12-04 13:09:20 [quote="Grey"]
Hi,
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device.
[/quote]
I not sure i understand you correctly. The sensor is already connected to D9 anonymous
Hi,
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device.
[/quote]
I not sure i understand you correctly. The sensor is already connected to D9
anonymous 2014-12-04 13:09:20 [quote="Grey"]
Hi,
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device.
[/quote]
I not sure i understand you correctly. The sensor is already connected to D9 anonymous
Hi,
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device.
[/quote]
I not sure i understand you correctly. The sensor is already connected to D9
anonymous 2014-12-04 12:35:19 Hi,
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device. Grey.CC
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device.
Grey.CC 2014-12-04 12:35:19 Hi,
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device. Grey.CC
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device.
Grey.CC 2014-12-04 12:35:19 Hi,
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device. Grey.CC
Have you changed the other pin to drive the Ultrasonic sensor? Like D9 and D11?
D5&D6 PWM output will use timer 0, it will interfere other device.
Grey.CC 2014-12-03 18:16:37 Please see the videos to see the problem
[url=http://youtu.be/HICrEOkCk-U]http://youtu.be/HICrEOkCk-U[/url] shows the expected ping sensor activity light. The motors are off
[url=http://youtu.be/gQFT_hFvopI]http://youtu.be/gQFT_hFvopI[/url] shows the activity while motors are running
any suggestions?
anonymous
[url=http://youtu.be/HICrEOkCk-U]http://youtu.be/HICrEOkCk-U[/url] shows the expected ping sensor activity light. The motors are off
[url=http://youtu.be/gQFT_hFvopI]http://youtu.be/gQFT_hFvopI[/url] shows the activity while motors are running
any suggestions?
anonymous 2014-12-03 18:16:37 Please see the videos to see the problem
[url=http://youtu.be/HICrEOkCk-U]http://youtu.be/HICrEOkCk-U[/url] shows the expected ping sensor activity light. The motors are off
[url=http://youtu.be/gQFT_hFvopI]http://youtu.be/gQFT_hFvopI[/url] shows the activity while motors are running
any suggestions?
anonymous
[url=http://youtu.be/HICrEOkCk-U]http://youtu.be/HICrEOkCk-U[/url] shows the expected ping sensor activity light. The motors are off
[url=http://youtu.be/gQFT_hFvopI]http://youtu.be/gQFT_hFvopI[/url] shows the activity while motors are running
any suggestions?
anonymous 2014-12-03 18:16:37 Please see the videos to see the problem
[url=http://youtu.be/HICrEOkCk-U]http://youtu.be/HICrEOkCk-U[/url] shows the expected ping sensor activity light. The motors are off
[url=http://youtu.be/gQFT_hFvopI]http://youtu.be/gQFT_hFvopI[/url] shows the activity while motors are running
any suggestions?
anonymous
[url=http://youtu.be/HICrEOkCk-U]http://youtu.be/HICrEOkCk-U[/url] shows the expected ping sensor activity light. The motors are off
[url=http://youtu.be/gQFT_hFvopI]http://youtu.be/gQFT_hFvopI[/url] shows the activity while motors are running
any suggestions?
anonymous 2014-12-03 05:13:26 power supply is 7.5v. No i didn't try changing the servo pins. as i observed the condition is not related to servo, but related to the wheel drive dc motors. it condition happen only when these dc motors are attached, irrespective of servo connection. I have also tried using separate power for dc motor (7.5v) and controller (from usb, jumper off)
EDIT - Romeo is 1.2 not 1.1. Also i disabled the servo entirely and still the problem exists anonymous
EDIT - Romeo is 1.2 not 1.1. Also i disabled the servo entirely and still the problem exists
anonymous 2014-12-03 05:13:26 power supply is 7.5v. No i didn't try changing the servo pins. as i observed the condition is not related to servo, but related to the wheel drive dc motors. it condition happen only when these dc motors are attached, irrespective of servo connection. I have also tried using separate power for dc motor (7.5v) and controller (from usb, jumper off)
EDIT - Romeo is 1.2 not 1.1. Also i disabled the servo entirely and still the problem exists anonymous
EDIT - Romeo is 1.2 not 1.1. Also i disabled the servo entirely and still the problem exists
anonymous 