[TriEmbed] Servo will not stop spinning

[Craig Cook]

 A little more research, I think I have a fake.
This site suggests they should cost around $12
https://servodatabase.com/servo/futaba/s3003
This site shows a fake: http://www.rcmodelreviews.com/fakefutabaservos.shtml
Mine has the same screw holes.
I expect the Servo.h library would take care of whatever is needed to initialize the servo.

Think I need to find another one. Amazon has one listed for around $13.

Thanks
Craig


    On Sunday, January 28, 2018, 2:28:32 PM EST, Robert Gasiorowski <rgresume at gmail.com> wrote:  
 
 Futaba 3003 is an analog servo and you must resend control pulse every ~20ms


iPhone OS = OS X on Diet Code
On Jan 28, 2018, at 2:09 PM, Shane Trent via TriEmbed <triembed at triembed.org> wrote:


The control pulse should be retransmitted over 20 msec or so. I would be tempted to set up a loop with a 1 or 2 second dwell and sweep the pulse with from 1.0 msec to 2.0 msec and observe the behavior. 
On Sun, Jan 28, 2018 at 2:05 PM Craig Cook via TriEmbed <triembed at triembed.org> wrote:

I purchased a Futaba 3003 from ebay ~$4.  It keeps spinning when I initialize it. Should I call it bad and get another? (I have a micro servo working fine).

I pulled the top cover off. Apply power, nothing happens.  I add the signal from my arduino and it starts spinning.
Using this code, it should do nothing.
#include <Servo.h>

const byte servoPin = 5;
const int STOPPED = 1500;
 
Servo servo;
               
void setup()
{
  servo.attach(servoPin);
  servo.writeMicroseconds(STOPPED);
}
 
void loop()
{
 
 
}

With everything assembled if I force the blades to the left until I get resistance, turn the signal and power on, it rotates to the right. Stops and keeps shuddering.

With these symptoms, could it have been something I did to break it? Too many volts? 

Thanks
Craig
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