For my I/O Digital Arduino project, I chose to replicate a memory game: a Simon-says style memory game for my Arduino Nano 33 IoT setup with four colored button/LED pairs (blue, yellow, green, red).

How it plays:

• The board flashes a sequence of LEDs, starting with just one light.

• The user repeats the sequence by pressing the matching colored buttons in order.

• Get it right and the game adds one more random step to the sequence, then plays the whole thing back again (classic Simon-style escalation).

• Get it wrong or take longer than 4 seconds to press a button, and all four LEDs flash together to signal game over, then a fresh game starts at level 1.

Troubleshooting:

I ran into some trouble during the process. My yellow light wouldn't turn on, so I thought something was wrong with the way I had things wired up. Turns out, the bulb was burnt out; swapping it out was all that was needed.

Extra touches:

• Playback speeds up as you climb levels (starts around 600ms per flash, drops to a 150ms floor) so it gets genuinely harder, not just longer.

• Each button press lights its LED briefly as feedback so you know it registered.

• Debounce logic and a wait-for-release check keep single presses from double-counting.

• Serial Monitor counter that provides details into if user is correct, wrong or if the game has started over.