This project dates from 1994...
LiteKey1: Light coded Key
LiteKey1: Light coded key
- Pulse Code Modulated Green light key
- Key number in EEPROM
- Miniature keyfob case
- Field programmable
- 3v Battery operation
The Light key has the advantage that an IR learning remote cannot be used (in unmodified form) to steal the pass number of a borrowed key and thus gain unauthorised access. As the unit is field programmable, stocking is eased by allowing customization of client coding just prior to delivery.
![LiteKey1 Schematic diagram](liteky1c.gif)
Circuit Diagram for LiteKey1
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