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Remote Authentication Transmitter and Receiver

Clarence Bartenhagen Jeff Sands. Remote Authentication Transmitter and Receiver. Basic Overview. Transmitter ATtiny45 connected to Infared LED Sends a custom protocol pulse via Infared LED to receiver during button press Toggle Switch to send untrusted ID Receiver

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Remote Authentication Transmitter and Receiver

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  1. Clarence Bartenhagen Jeff Sands Remote Authentication Transmitter and Receiver

  2. Basic Overview • Transmitter • ATtiny45 connected to Infared LED • Sends a custom protocol pulse via Infared LED to receiver during button press • Toggle Switch to send untrusted ID • Receiver • ATmega88PA connected to IR Sensor, and 2 LEDs • Receives protocol pulse via IR sensor • Uses 2 LEDs to indicate access

  3. Schematic of Each Device IR transmitter MCU IR receiver ATmega88PA LCD IR transmitter MCU ATtiny45 SSR Solenoid 24V PSU

  4. Transmitter and Receiver Signals 38 kHz TX RX

  5. Pulse Protocol Manchester Encoding Logical 0 Logical 1 Logical 0 Logical 1

  6. Demonstration Special Thanks to Professor Kruger for the Goodies (24V Power Supply and Solenoid)

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