Author Topic: BIPED ROBOT  (Read 1837 times)

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Offline SRI KARTHIKTopic starter

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« on: December 09, 2010, 11:55:39 PM »
Hi am tryin to prepare a biped robot.. am using sg5010 rc servos to drive the linkages.. the problem is like am not able to rotate the motor bi directional using a micro controller.. am usin pic 16f877a and ive simulated my code succesfully to obtain varying pulse like 1ms,1.5ms,2ms but yet irrespective of the pule given the motor rotates frm -90 to +90 and stops... help me wat to do.. do i need to connect any drivin ckt between micro controller n motor?? if yes wat ckt do i need to connect??

Offline waltr

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« Reply #1 on: December 10, 2010, 08:54:02 AM »
How often are the pulses to the servo updated?
The pulse should be sent every 20ms.

What are you using to power the servo?
A common problem is a weak battery. Is the battery fully charged?

Do you have a common connection (ground or black wire) on the PIC to the servo and battery?

The signal to command the servo can be driven directly from a PIC output pin.

On the PIC:
Have you been successful in getting the PIC to blink an LED?
If not get this working first as it will prove that the PIC is running properly.
Do you have a 0.1uF cap across the Vdd to Vss pins and very close to these pins?
Have you measured the output pulses from the PIC with an O'scope?


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