How do I use keyboard inputs to control a servo?

Projects Programming
1

I'm very new to Arduino and I am trying to make a servo spin when I press "a". I couldn't find anything online so I'm not sure where to start.

2
3

Hi @parkerb0888

welcome to the arduino-forum

The reason why you didn't found anything online is that the combination of
keybaoard input and controlling a servo is only one of a billion of possible combinations how two microcontroller things can be combined.

As soon as you search for single terms like

"receive a keypress on arduino"

"control a servo"

You will find code-examples

You can either

  • investing time in waiting for answers not learning anything
    or

  • investing time in learning how to finish your project faster

There are some things to learn for a beginner if you want to proceed faster in your project
one of the most important things to learn is how to post in a way that is efficient
This is described here

best regards Stefan

4

Is this key press from the Keyboard of the PC or from a 4x4 Keypad attached with UNO?

5

consider

#include <Servo.h>
Servo servo;

byte PinServo = 10;
int  val;

void
loop (void)
{
    if (Serial.available ())  {
        switch (Serial.read())  {
        case 'a':
            val = 180;
            break;

        case 'b':
            val = 125;
            break;

        case 'd':
            val = 90;
            break;

        case 'e':
            val = 45;
            break;

        default:
            val = 0;
            break;
        }
        servo.write (val);
    }
}

void
setup (void)
{
    Serial.begin (9600);

    servo.attach (PinServo);
    servo.write (0);

}
1 Like
7

if it is your PC then using the serial monitor of the ardiuno-IDE will work with the minimal example that gcjr has posted

8

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