Rhythmic Audio-Sync Prototype Development

I need a working proof-of-concept that can do three things in perfect unison: play a short audio track, drive a coin vibration motor, and blink a single-colour LED, all to the same beat.

Core requirements
• Based on Arduino (that is the platform I want to test on).
• Coin vibration motor for the haptic cue—smooth, pulsing feedback rather than harsh buzzing.
• Single-colour LED that fades on and off with the rhythm.
• Two user-selectable timers: ±1–2 min and ±15 min.
• Simple controls only: one slide switch to choose Audio / Vibration / Light combinations, plus one start button.
• Runs from a small Li-ion cell or a couple of AAAs; charging circuit is optional, swap-out is fine.
• Enclosure can be rough—3-D print, plywood block, or a plastic hobby box—whatever gets the job done quickly.

Scope
I am not asking for a production design. A bench-top prototype that I can hold, power on, and test with one specific rhythm is enough. Later I will load other tracks myself, so please structure the firmware for easy audio file swaps.

Deliverables
1. Fully assembled prototype (hardware + basic enclosure).
2. Arduino sketch with commented source.
3. Wiring diagram and brief Bill of Materials so I can duplicate the build.
4. Short video or live call that shows the unit functioning.

If you have hands-on experience with Arduino programming, integrating coin motors, PWM LED control, and quick-turn hardware builds, I’d love to hear a few lines about similar projects you have completed.

All rights to the Prototype and Code Transfer to me upon full payment.

Fürther Projects are planned If the collaboration works well.