Servo Testing/Control Board

[View Code on Github](https://github.com/rhovious/servoTester Servo Testing/Control Board)

Building a simple board that will allow moving of a 180* servo via a potentometer and 1306 screen.

About

This project serves the purpose of building a small servo control device. This device allows connection of a standard 180* rotation servo. The angle of the servois adjusted using the potentometer. The active angle of the servo is displayed on the connected screen

Hardware Required

• Arduino Board
  • Any arduino should work, using a Nano clone
• Servo Motor
• 0.96 OLED
  • Used to show the current servo arm angle. Can be ommited and monitored using the serial monitor. I used an 0.96 SSD1306 display 64x128.
• 10k Potentometer
  • Used for adjusting the angle of the servo
• hook-up wires

Circuit

Assembly

• INSERT PIC OF BOARD WITHOUT MODULES IN IT
• *OTHER PICS

Potentometer Circuit

Wire the potentiometer so that its two outer pins are connected to power (+5V) and ground, and its middle pin is connected to A0 on the board.

Display Circuit

Wire the display as required. It should have a connection to power (+5v) and ground. The other 2 pins should ne connected to SDA / SCL on the Nano.

Servo Circuit

Connection to the servo should go through your input pins directly to allow for a higher voltage. Connect servo power (+xxv) and ground to input power supply. The other pin should be connected to your servo control pin on the board

Programming

Knob Circuit

The potentometer is simple mapping the value of the potentometer (0-1024) to an angle measuremeant (0-180)

// Include the servo library:
#include <Servo.h>
// Create a new servo object:
Servo myservo;
// Define the servo pin:
#define servoPin 9
// Create a variable to store the servo position:
int angle = 0;
void setup() {
  // Attach the Servo variable to a pin:
  myservo.attach(servoPin);
}
void loop() {
  // Tell the servo to go to a particular angle:
  myservo.write(90);
  delay(1000);
  myservo.write(180);
  delay(1000);
  myservo.write(0);
  delay(1000);
  // Sweep from 0 to 180 degrees:
  for (angle = 0; angle <= 180; angle += 1) {
    myservo.write(angle);
    delay(15);
  }
  // And back from 180 to 0 degrees:
  for (angle = 180; angle >= 0; angle -= 1) {
    myservo.write(angle);
    delay(30);
  }
  delay(1000);
}