This repository tracks a simple attempt at reverse engineering the Febreze ScentStories, specifically its Symphony board from 2004 (2004-05-25). I am curious about reverse engineering the device so that more people can look at how others have engineered scent technologies throughout history.
The Febreze ScentStories was a 2004 scent technology marketed as a home fragrance product. Media likened the device to a "CD player for smells," which provided "music for the nose." The device is loaded with a disc that contains five scent pockets (each with a heat-sensitive fragrance gel), and each odor exudes for roughly 30 minutes. Under the disc are a thermoelectric element (Peltier element) and thermistor to heat the scent pocket directly above, increasing the vaporized odorants in the pocket. The device had a fan blow air over the pocket to distribute the odor into the room. Users could adjust the odor intensity by raising or lowering the heat and could skip a scent pocket.
Country singer Shania Twain promoted the product (interview with Twain including a TV commercial for the device). Six scent discs were originally released: (1) Shades of vanilla, (2) Relaxing in the hammock, (3) Strolling through the garden, (4) Exploring a mountain trail, (5) Wandering barefoot on the shore, and (6) Celebrate the holidays.
- Reproduce the PCB layout with correct footprints.
- Identify the FEGO153S mystery microcontroller being used.
- The disk motor control is a bit mysterious at the moment.
- Document the three heating temperatures.
- Produce an approximate 3D model for new scent discs.