Arduino HIIT Exercise Timer

Code is here.

 I know you can just use your phone, but sometimes I like to watch videos, and this little timer thing does the job without being too distracting.

What is it?

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A High Intensity Interval Training Timer (HIIT) for exercise

using the built in LED for Arduino Uno/Nano/etc.  Simply plug in

the Arduino, and you'll get the following 10 minute HIIT workout:

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Routine:

1. 5 seconds flashing to show start of workout.

2. 1 minute warmup, displayed with slow flashes.

3. 30 seconds high intensity flashes, then 1 minute slow flashes. Repeats 5 times.

4. 1 minute warm down, displayed with the LED ON, turning off every 2.5 seconds.

5. Final flashes for 5 seconds to indicate end of work out

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