WaldoWatch was my very first microelectronics project (Arduino) that I built in high school. WaldoWatch consists of a locator module, worn on the user’s wrist, and a receiver module, which is always attached to the items a user commonly misplaces.

Each module had its own microprocessor. The locator and receivers communicated through RF signals. The prototypes and final versions are shown below. A year after WedgeWalk, I showcased this project at the Maker Faire at the TechShop booth as well.