Can't get sparkfun Servo to work

Development Boards Arduino
1

So I can’t get this servo to do anything

https://www.sparkfun.com/products/10333

If I power everything down and use this servo instead

https://www.adafruit.com/products/169

it works perfectly…

Swap it for this one

https://www.sparkfun.com/products/10333

nothing

:frowning:

(I’ve tried with my code and the servo sweep example code that comes with Arduino IDE)

Both servos should operate about the same right?

I’m running the servo on an external power supply (so not through the arduino)

And I’ve also made sure to not push the limits so I only send it values from 30 to 160…

The only way I can get the servo to do anything is by setting it to 0 or negative values then it just jitters… Set it to anything > 0 and it does nothing

2

From the product page:

I had the same problem with the sweep sketch. I was able to fix it by increasing the delay in the sketch between steps

3

Yea I tried to remember quoting everything I did relative to the product page but I forgot to mention that one…

I tried modulating the delay…

I also tried just sending a single value… So the ENTIRE loop code will be

myServo.Write(90)

delay(4000)

and nothing happens

I try myServo.Write(anything between 20 and 150)

delay(4000)

and nothing happens

My two other sweep servos do exactly what I expect them to though

4

PureWeen:
I’m running the servo on an external power supply (so not through the arduino)

What's the power supply ? Can it source 1A peak ? If so then you should be OK, beginning to sound like a bad servo.
5

Agree with Mac. You may want to contact customer service and ask for an exchange.

6

Mee_n_Mac:

PureWeen:
I’m running the servo on an external power supply (so not through the arduino)

What's the power supply ? Can it source 1A peak ? If so then you should be OK, beginning to sound like a bad servo.

http://www.pololu.com/product/2223

Is what I’m powering it with so AFAIK yes…

7

Are those wire colors a standard? In my younger years (a few decades ago) I saw servos from different manufacturers use a different order in the Vcc,Gnd and PWM wires.

I know the colors of those wires is the same. But still.