AVR Servo 01

Trying to control MG995 servos from a Futurlec ATMega128 microcontroller board.
The board is great, but these servos are a real pain to try to work with, so, if you see them on ebay etc. please stay away from 'em...
This is a preliminary test to a future car simulation control, so I'm hoping the PWM will work better with a high-power DC motor controller.

Category:

Science & Technology

Tags:

• AVR
• atmega128
• MG995
• servo
• microcontroller
• futurlec
• Atmel

[tonignostico]

scusa posso farti una domanda.....vanno bene questi servi? devo montarli

su un elicottero classse 50 raptor, mi fai sapere, grazie anticipatamente....

[philbx1]

@tonignostico

No, non mi fiderei di questi servi su qualche cosa che potesse lasciare la terra! 

[Shaunakde]

I bought an unbranded servo off the streets. Will it be safe to assume that it has a center pulse of 1.5ms?

[philbx1]

@Shaunakde

Hey, thanks for the question, but I have only ever looked at 1 type of servo - the ones on my video.

You can probably assume that an RC servo's center pulse will be 1.5ms though. Ref. wikipedia Servomechanism

[whitedemon30]

wHATS a servo?

[philbx1]

@whitedemon30

Well, If you can watch a youtube video I assume you know of Google.

Don't want to elaborate any more as I'd get carried away and sound like I was disparaging an innocent comment like this. Please do look it up...

[SWIPChina]

oh cool hehe see my  vedio.. welcome

[Shaunakde]

@philbx1 Thanks for the reply. I will do some testing and post back!

[philbx1]

If the USB is supplying power to the servos then it might not be enough. Note the UBEC to the left of the proto board regulating power from the the battery. Also, as yanava mentions below you may also need to change the duration of the pulse (most likely longer).

[edrZero]

Hi, I'm trying to drive this servos (MG995) with a PIC18F2550 using the usb, but i can't make them move, i used the same pwm to drive standard servos, can you tell me what pwm did you use?