Project One - Double Blink

Introduction

The purpose of this project is to demonstrate a simple digital-out display using the LED Grove. Connect your equipment as shown in the image below: Connect the LED Grove to the D1/D2 Digital I/O jack on the Grove Shield. 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.

Now upload the following Arduino sketch:

// Project One - Double Blink
//

int del=500; // adjust for blink rate

void setup()
{
    pinMode(1, OUTPUT);
    pinMode(2, OUTPUT);
}

void loop()
{
    digitalWrite(1, HIGH);
    digitalWrite(2, LOW);
    delay(del);
    digitalWrite(1, LOW);
    digitalWrite(2, HIGH);
    delay(del);
}

As you can see, it is quite simple. The two LEDs alternately blink, with the delay between the two set by the variable del. However, in doing so you can experience for yourself how simple the Grove system is to use.

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