Arduino Nano - Button - Pump

This tutorial instructs you how to use Arduino Nano to switch on a pump for a few seconds and then turn it off when a button is pressed.

Hardware Preparation

1×Arduino Nano
1×USB A to Mini-B USB cable
1×Push Button
1×(Optional) Panel-mount Push Button
1×12V Pump
1×Vinyl Tube
1×12V Power Adapter
1×DC Power Jack
1×Jumper Wires
1×(Optional) 9V Power Adapter for Arduino Nano
1×(Recommended) Screw Terminal Adapter for Arduino Nano

Or you can buy the following sensor kits:

1×DIYables Sensor Kit (30 sensors/displays)
1×DIYables Sensor Kit (18 sensors/displays)
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Overview of Button and Pump

If you are unfamiliar with pump and button (including pinout, operation, and programming), the following tutorials can help:

Wiring Diagram

The wiring diagram between Arduino Nano and Button controls Pump

This image is created using Fritzing. Click to enlarge image

Arduino Nano Code

/* * This Arduino Nano code was developed by * * This Arduino Nano code is made available for public use without any restriction * * For comprehensive instructions and wiring diagrams, please visit: * */ #include <ezButton.h> // include ezButton library #include <ezOutput.h> // include ezOutput library ezOutput pump(2); // create ezOutput object attached to pin D2 ezButton button(8); // create ezButton object attached to pin D8 void setup() { Serial.begin(9600); button.setDebounceTime(50); // set debounce time to 50 milliseconds pump.low(); // turn pump off } void loop() { pump.loop(); // MUST call the loop() function first button.loop(); // MUST call the loop() function first if (button.isPressed()) { Serial.println("Pump is started"); pump.low(); pump.pulse(10000); // turn on for 10000 milliseconds ~ 10 seconds // after 10 seconds, pump will be turned off by pump.loop() function } }


The code above performs the following tasks:

Detailed Instructions

  • Connect an USB cable from the Arduino Nano to a computer.
  • Open the Arduino IDE, select the appropriate board and port.
  • Click to the Libraries icon on the left bar of the Arduino IDE.
  • Search for “ezButton” and locate the button library by ArduinoGetStarted.
  • Press the Install button to install ezButton library.
Arduino Nano button library
  • Look for “ezOutput” and locate the output library by ArduinoGetStarted.
  • Press the Install button to install ezOutput library.
Arduino Nano output library
  • Copy the code and open it in the Arduino IDE.
  • Click the Upload button in the Arduino IDE to compile and upload the code to the Arduino Nano.
Arduino IDE Upload Code
  • Press the button
  • Check out the status of the pump

Code Explanation

Check out the line-by-line explanation contained in the comments of the source code!

Video Tutorial


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