servo motor in animatronic hand

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Difficult to suggest a particular servo since that will depend on your application torque requirements.

Since you have the SG90s, might as well use them until you have a better handle on your design needs.

Cool project, by the way....
 
cowboybob said:
Difficult to suggest a particular servo since that will depend on your application torque requirements.

Since you have the SG90s, might as well use them until you have a better handle on your design needs.

Cool project, by the way....
Click to expand...

Thank you for replying but i tried with sg90 (only this is avaible in my lab) and it didnt work...its rotational speed is actually very small..
and i checked for servo motors with greater torque ..but they are costly...
now i am thnking of using simple dc motor(i have dc motors) and i even tried but cant control its speed with potentiometer only .. can you suggest something else..
 

Operating speed: 0.12second/ 60degree ( 4.8V no load) How fast do you want?
 
ronsimpson said:
Operating speed: 0.12second/ 60degree ( 4.8V no load) How fast do you want?
Click to expand...

motor specification is not given on the project details..but i tried sg90 and it doesnt work...i just want instantaneous response.
so i thought of using dc motor..i just need precise control over its speed.
can you suggest how can i have precise control over dc motor speed
 
How close is 0.1 seconds to "instantaneous".
How fast can you move your finger.
You may have other delays in the system.
>If your system is what is in the video.....
>>There is a radio link, computer board, finger sensors, servo controller etc. Each has a delay.

I have a servo controller, one of its features is to set the maximum speed of a servo. If set to slow it really is slow. If set to max the servo jumps.
 
A servo is a completely different beast than a "simple dc motor".

It's not just the speed of the response you need, it's the repeatable control of the position of the shaft.

This has a reasonable explaination of the differences:

**broken link removed**
 
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