Honorable Mention

Stealth Keyless Entry System

The AT90S2313 microcontroller-based Stealth Keyless Entry System is a robust solution to a common security problem. Typical 10-button keyless entry pads that are controlled by numerical entry codes can be risky over time. Dirt from fingers deposited on the keypad coupled with the natural wearing of the dye on the keypad make it relatively easy to determine which keys are pressed, and therefore easier discern the entry code. The Stealth Keyless Entry System uses a modified doorbell to act as a hidden entry system. When pressed normally, the doorbell rings as expected. But when the entry code (Morse code) is entered, the doorbell does not ring, and the garage door is unlocked. The MCU deciphers the code, compares it to the master code stored in EEPROM, and then sends the command to open the garage door.

David Brown

U.S.

k8ax@wowway.com

Abstract | Entry

Winners List