Project Two – Digital Input

Introduction

The purpose of this project is to demonstrate two forms of digital input – using the button and the tilt switch . Pressing either of the buttons will light the respective LED, and activating the tilt-switch will light both LEDs.

  1. Connect the LED to the D1/D2 Digital I/O jack, like it was in Projects 1 and

  2. Arduino Pin D1 powers the Red LED on the Grove’s D1 connector, and Arduino Pin D2 powers the Green LED on the Grove’s D2 connector.

  3. Connect the Tilt Switch to the D5/D6 Digital I/O jack.

  4. The Tilt Switch Grove’s D1 connector sends a high or low signal to the Arduino’s D5 digital input.

  5. Connect the Twin Button Grove to the D7/D8 input jack (on the second row.)

  6. The Twin Button Grove’s red button uses the D1 connector to send a signal to the Arduino’s D7 digital input, and the green button uses the D2 connector to send a signal to the Arduino’s D8 digital input. 7.

Now upload the following Arduino sketch:

// Project Two - Digital Inputs
//

void setup()
{
    pinMode(1, OUTPUT);
    pinMode(2, OUTPUT);
    pinMode(5, INPUT);
    pinMode(7, INPUT);
    pinMode(8, INPUT);
}

void loop()
{

    if (digitalRead(5)==HIGH)
    {
        digitalWrite(1, HIGH);
        digitalWrite(2, HIGH);
        delay(100);
        digitalWrite(1, LOW);
        digitalWrite(2, LOW);
    }

    if (digitalRead(7)==HIGH)
    {
        digitalWrite(1, HIGH);
        delay(200);
        digitalWrite(1, LOW);
    }
    if (digitalRead(8)==HIGH)
    {
        digitalWrite(2, HIGH);
        delay(200);
        digitalWrite(2, LOW);
    }
}

Help us make it better

Thank you for choosing Seeed. A couple of months ago we initiated a project to improve our documentation system. What you are looking at now is the first edition of the new documentation system. Comparing to the old one, here is the progresses that we made:

  • Replaced the old documentation system with a new one that was developed from Mkdocs, a more widely used and cooler tool to develop documentation system.
  • Integrated the documentation system with our official website, now you can go to Bazaar and other section like Forum and Community more conveniently.
  • Reviewed and rewrote documents for hundreds of products for the system’s first edition, and will continue migrate documents from old wiki to the new one.

An easy-to-use instruction is as important as the product itself. We are expecting this new system will improve your experience when using Seeed’s products. However since this is the first edition, there are still many things need to improve, if you have any suggestions or findings, you are most welcome to submit the amended version as our contributor or give us suggestions in the survey below, Please don’t forget to leave your email address so that we can reply.

Happy hacking