Author Topic: Alternative for servo on the $50 robot  (Read 1975 times)

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Offline ikennaTopic starter

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Alternative for servo on the $50 robot
« on: December 03, 2009, 05:24:19 PM »
Pls is there anybody out there who knows any alternative for servos cos i can't find any servos around. I am thinking of using DC motors but I have no idea on how to connect it to the MCU and i am not sure of the exact type of DC motor in terms of voltage capacity. I need to know if anybody have tried it before.


Offline GWER57

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Re: Alternative for servo on the $50 robot
« Reply #2 on: December 07, 2009, 08:56:23 AM »
I would highly reccomend using DC motors. They are faster, stronger, cheaper, and more scalable (can be used on large robots as well as small ones).
Just make sure you get a gearhead motor as the gears slow down the motor to a reasonable speed and greatly improve torque.

All you need to control it is an h-bridge which can be made out of a few transistors or you can buy an ic :). You can also buy modules that allow different control methods (serial, analog voltage, pwm) but these tend to cost in the 20 to 50 dollar range. :P
GTW

Offline chelmi

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Re: Alternative for servo on the $50 robot
« Reply #3 on: December 07, 2009, 10:34:15 AM »
http://dealextreme.com/ has some servos, shipping is free !

 


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