Servo Problem

Other Hardware Robotics
1

hi everyone ^^

I have this servo : TGY-SM-4309R
and i used this sketch in arduino uno just to test if my servo is working or no,
ps: I linked the between the servo and arduino directly without any regulator or resistor... so linked GND of TGY-SM-4309R with GND of arduino. Vcc Of TGY-SM-4309R with 3,3V pin and the control to the Pin 9 of arduino ( i attached a picture to show the way i linked arduino with that Servo)

this is the sketch i uploaded in the arduino:

#include <Servo.h>
int servoPin = 9;
Servo tgyServo;

void setup()
{
tgyServo.attach(servoPin);
}

void loop()
{
for (int i = 0; i <=360; i=i+20)
{
tgyServo.write(i);
delay(1000);
}

}

and the result is this: servo directly controled by Arduino. (problem) - YouTube

Can someone tell me where is the problem???

arduino-mini-servo-298x300.png

2

Can someone tell me where is the problem?

I can't see the video, but your diagram shows you're powering the servo from the Arduino.
Don't do that.

3

AWOL:

Can someone tell me where is the problem?

I can't see the video, but your diagram shows you're powering the servo from the Arduino.
Don't do that.

Beat me to it, so my contribution is the pic below.

servo power.png

4

What results did you expect? That device is clearly not a servo, so expecting it to behave like one is unrealistic.

5

I think the definition of 360 degree servo is not clear and unambiguous - The rotation angle should be defined under the frame work of PWM range, i.e. a protocol of communication.

For the servo prom OP has, it seems like it is a continuous rotate servo, or called it geared motor /ESC with servo horn to be more precise. All you need to power it is a pwm very close around 1.5ms should control it to turn or stop. Which is useful to some application.

I bought a few 180dgree, and 360 degree servo from ebay, and under RC receiver pulse 1-2ms, they all just rotate 60 degree only, I guess they would turn 180 or 360 under arduino signal 0-2ms. wider than Rc PWM. But I need to buy some continuous turn and some true 180/360 under RC pwm.