Geared Motor Servo Conversion

hey!

This is a quick little project i did one night after work!

I was itching to solder something, so here it is! My cure for boredom! 

You will need the following:

1 x Servo
1 x Screwdriver
1 x Soldering iron
1 x Wire snippers
1 x X-acto knife
1 x Connectors of your choice 


enjoy!

Step 1 Take It Apart!

Alright!

Take your servo apart!

Remove the four screws at the bottom. Get rid of the servo wires (snip or de-solder, your choice)

Do the same with the 3 wires connecting to the motor.

Comments

[sdfgeoff]

Or you can leave the electronics in, but cut the arm of the potentiometer.
Then you can control it like you would a normal servo, and use it as a motor without needing to make an H-bridge.

[Gelfling6]

I have to agree with sdfgeoff.. You needn't go as far as massive rework, when the majority of the work is already built-in.. Just a matter of minor modification to the main drive gear to remove any kind of 'stop' tab, and removing the potentiometer, and replacing it with a pair of 2.2K resistors in a "W" (or "M ") wiring, connecting the two resistors in series, connecting the free ends to the outer-connections for the pot, and the center of the two, to the wiper connection on the servo board. Then, simply sending a PWM train signal to the Signal pin of the servo, and simply supplying 4.5-6V to the servo power pins. Unless you really want to go as far as the H-Bridge, and have direct control of the servo motor.. Just seems a lot of extra effort to rebuild the mouse-trap, so to speak.

[sdfgeoff]

It just depends what use you have in mind.
Some mirocontrollers may not be able to output a pulse necessary to drive the servo without stopping all other processing (the old basic stamps had this problem I think), and so it is then better to use an H-bridge.

[max_fraser]

Than don't build it.....

[max_fraser]

That is a great suggestion!

In this instance i just wanted it to be as bare bones as i could make it, and its less work to just pull it out!

Thanks for the reply

-Max