Hi all,
I'm wanting to use this sweep sketch:
with this servo:
I'm wondering how I should be wiring the circuit for it?
I used this servo many years ago, and I've lost all of my documentation for the project so I'm starting from scratch again. I do recall destroying at least three of them because of wiring mistakes, so I thought I'd ask the forum for some help here.
Thanks!
First you need an external power supply. The data sheet lists the stall current at 2.5A @ 6V so your servo supply needs be able to safely deliver 2.5A (minimum) per servo. Connect power supply ground to servo ground and Arduino ground.
Takes a standard servo signal 0-180° at 1000 - 2000 microseconds like the Servo library does.
And connect the servo power +/- directly to the servo NOT via a breadboard (which can't handle the current).
Steve
Thanks!
Would the circuit look something like this:
If I wanted to put in a fuse, would I put it in here? And should it be a 3A fuse?
Yes, that is how the servo, Arduino and power supply should be connected. Yes, that is good for placement of a fuse and 3A will be OK. Though a fuse is unusual it is not wrong.
Battery capacity is measured in Ah (Amp hours) or mAh (milliamp hours). How long do you want the battery to last? The battery must have the capacity to supply the average current that the circuit demands for that amount of time, hence mAh. Get a battery that has a capacity of twice (miniimum) the calculated mAh.
That's a really nice schematic 
And yes, it's a suitable place for a fuse. The rating of the fuse should allow for the combined stall current of your motors plus a safety margin. A margin of 100% (double the current you anticipate to draw) is a good place to start.
One thing though: where does your Arduino get its power from in your schematic? 
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