Easy pump with arduino and Stepper motor. https://youtu.be/dSlVYtNwtlo i use:

6x bearings: 10x5x4 mm NEMA 17Stepper motor with 5mm shaft steper driver pololu A4988 Arduino Nano rezistor 10k switch silicone pipe 5x3mm some screws M3,M2 and nuts

arduio code: int x; const int buttonPin = 2; int buttonState = 0;

void setup() { pinMode(6, OUTPUT); // Enable pinMode(5, OUTPUT); // Step pinMode(4, OUTPUT); // Dir digitalWrite(6, LOW); // Set Enable low pinMode(buttonPin, INPUT); Serial.begin(9600);

}

void loop() { buttonState = digitalRead(buttonPin);

Serial.println(buttonState);

if (buttonState == HIGH) {

digitalWrite(6, LOW); // Set Enable low digitalWrite(4, HIGH); // Set Dir high

for (x = 0; x < 4000; x++) // Loop 200 times { digitalWrite(5, HIGH); // Output high delayMicroseconds(300); // Wait 1/2 a ms digitalWrite(5, LOW); // Output low delayMicroseconds(300); // Wait 1/2 a ms } delay(1000); // pause one second } else {

digitalWrite(6, HIGH); // Set Enable low

}

}

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Category: Outdoor & Garden