A glowing microchip with an ECG heartbeat line, illustrating the amomii Link heartbeat test for checking your board

The Heartbeat Test: Is Your Board Working?

by Shaun Armstrong in amomii Link

The Heartbeat Test: Is Your Board Working?

When you’re building something new, the first step is always the most important: The Heartbeat Test. Think of this as a "Hello World" for your hardware. Before we dive into complex AI tennis games or music sequencers, we want to make sure your computer, your USB cable, and your amomii (or Arduino) board are all talking to each other perfectly.

What is the Heartbeat?

The Heartbeat is a unique piece of code that tells the onboard LED on your board to blink in a specific "thump-thump" rhythm—just like a real heart.

Note: Most boards come from the factory with a simple "one second on, one second off" blink. Our Heartbeat code is designed to look unique so you can be 100% sure that the new code has been successfully flashed to your board.

How to Run the Test

  1. Plug in your board via a USB Data Sync cable.

  2. Select "Heartbeat" from the project list in the tool below.

  3. Click UPLOAD. 4. Select your device from the browser popup and hit Connect.

 

What to Look For

Once the progress bar hits 100% Complete, look closely at your board. You should see the small light (usually labeled 'L') performing a distinct double-blink pattern.

If you see a simple, slow on-and-off flash, that is likely the old factory code. You are looking for that rhythmic "blink-blink... pause... blink-blink" that tells you amomii Link has done its job!

If the heartbeat is pulsing: Congratulations! Your connection is perfect, your cable is a "Data Sync" cable, and you are ready to move on to any other project in our library.

If the light is NOT pulsing (or you got an error): Don't worry. This is usually a simple fix. Head over to our [Troubleshooting Guide] to check your cable and browser settings.

Why start with a Heartbeat?

In engineering, we always test the simplest thing first. By confirming your "Heartbeat" is strong, you eliminate the guesswork. If a more complex project doesn't work later on, you'll know it's not a connection problem because you already passed this test!

Did your board pass the test? Let us know in the comments below!

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