SER0044 Datasheet SER0044 | P4-P6

Relationship between Angle & Analog

value

SER0044 Servo

Formula: Actual angle = Analog value degree *0.47-33.4

Before Usage

There will be some error between each servos. If you want to use the servos with scenes that

require precise control, you can calibrate them separately. A quick three-point calibration method is

provided here:

• 1. Drive the servo to 90 degrees (1500us), record the actual angle as reference angle A, and record

the corresponding feedback analog value a;

• 2. Drive the servo to 0 degrees (500us), record the actual angle as reference angle B, and record

the corresponding feedback analog value B:

• 3. Drive the servo to 270 degrees (2500c), record the actual angle as reference angle C, and record

the corresponding feedback analog value C

The following formula gives the relationship between Analog value & Angle:

• Actual angle = m * Analog value + n

• m=[(A-B)/(a-b)+(C-A)/(c-a)]/2

• n=[(Ab-Ba)/(b-a)+(Bc-Cb)/(c-b)]/2

If you doesn't need such accurate value, you can use m=0.47;n=-33.4 directly.

Tutorial

Requirements

• Hardware

• DFRduino UNO R3 (or similar) x 1

• SER0044 DSS-M15S 270° Metal Servo

• M-M/F-M/F-F Jumper wires

• Software

• Arduino IDE, Click to Download Arduino IDE from Arduino®

Connection Diagram

SER0044 Arduino Connection

Sample Code

void setup()

{

Serial.begin(9600);//Set Baud Rate to 9600 bps

}

void loop()

{

uint16_t val;

double dat;

val=analogRead(A0);//Connect Analog pin to A0

dat = (double) val * 0.47-33.4;

Serial.print("Position:"); //Display the position on Serial monitor

Serial.print(dat);

Serial.println("Degree");

delay(100);

}

Expected Results

Arduino will drive the servo with D9 pin, and receive the Analog feedback from A0 port.

P1-P3 P4-P6 P7-P7

SER0044

Mfr. #:

Buy SER0044

Manufacturer:

DFRobot

Description:

DFRobot Accessories DSS-M15S 270 15KG DF Metal Servo with Analog Feedback

Lifecycle:

New from this manufacturer.

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