Using 2 linear actuator with 4 limit switches

[PaulRB]

NEVER connect a motor directly to an Arduino, it would damage the Arduino.

[arduinonewbie78]

I found this article that talks about how to use arduino with actuator, and they also provided an example of the code. But I am not sure how should I add the button into this code.

this is the link to the post: Using Relay And Arduino To Control Linear Actuator – Progressive Automations

Here is the code:

const int forwards = 7;
const int backwards = 6;//assign relay INx pin to arduino pin
void setup() {
pinMode(forwards, OUTPUT);//set relay as an output
pinMode(backwards, OUTPUT);//set relay as an output
}
void loop() {
 digitalWrite(forwards, LOW);
 digitalWrite(backwards, HIGH);//Activate the relay one direction, they must be different to move the motor
 delay(2000); // wait 2 seconds
 digitalWrite(forwards, HIGH);
 digitalWrite(backwards, HIGH);//Deactivate both relays to brake the motor
 delay(2000);// wait 2 seconds
 digitalWrite(forwards, HIGH);
 digitalWrite(backwards, LOW);//Activate the relay the other direction, they must be different to move the motor
 delay(2000);// wait 2 seconds
 digitalWrite(forwards, HIGH);
 digitalWrite(backwards, HIGH);//Deactivate both relays to brake the motor
 delay(2000);// wait 2 seconds
}

[Railroader]

You can't use delay if You want to check buttons or end swiches.
Look for the topics "Blink without dekay", "Doing several things at the same time".