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Asked — Edited

Neck Pan And Tilt Servo Selection

1) Super High Torque RC servo with 1600 oz*in at 12 VDC, 60 degrees in 1000 ms, (3200 oz-in, 22.6 N-m peak). RC PWM input signal, closed loop position control. 270 degree travel on azimuth (pan) and 90 degree total travel on elevation (tilt) with RC radio or microcontroller input signal.

2)Super High Torque RC servo with 800 oz*in at 12 VDC, 60 degrees in 500 ms, (1600 oz-in, 11.3 N-m peak). RC PWM input signal, closed loop position control. 270 degree travel on azimuth (pan) and 90 degree total travel on elevation (tilt) with RC radio or microcontroller input signal.


So the question becomes with the above specs, which would be the better to go with. I guess what I am looking to know is, are the travel speeds of either of the choices sufficient for the facial tracking feature in ez-builder? If I can get away with the slower but more torque servo than that's the way I'm looking to go. Thanks for looking


Chris


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Canada
#1  
My thoughts are , faces don't typically move fast!:) Option number 2 at one half a second over 60 degrees is very good ...and...all depending how heavy the robot head is!
PRO
USA
#2  
@chris what brand and model of servo are these specs for?
#4  
If this is the same thing, I was looking at the 1600 to lift the 5 lbs beyond the first joint in my 24" B9 arms. These things are monsters! Looks like they can lift just about anything and are very loud:



You can find the 1600 at Pololu:
www.pololu.com/product/1390

Seems like a lot of servo to pan a neck joint on a robot. What are you planning to mount on this servo that need this amount of power? I didn't end up using this 1600 because it looked too slow in the vid I pointed to above and seems very loud. Instead I went with a Tonegawa Seiko PS-050. The RC Plain Jockeys really like these but they also have a few draw backs in my book. First, There are no factory built brackets for these Seiko servos. Two, the internal gears are not metal. They do run pretty fast if you over volt them to 12vdc and they are strong enough to break a finger if you get in the way.

Seiko Servo

You can see it work here in my vid:

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