1. SDP 11 FPR Team Goeckel Group: Adebayo Adeyemi, Joseph Hayward, Mark Kohls, Simon McAuliffe Advisor: Dennis Goeckel FPR Keeping The Secret

2. 2 SDP 11 FPR Team Goeckel Brief Overview Step 1: Send test signal to desired radio. Step 2: RX radio sends back reply signal. Friends measure this signal strength. Step 3: TX radio sends out message. Friends not in range transmit noise.

3. 3 SDP 11 FPR Team Goeckel System Requirements  Battery life of at least 12 hours  Receive and transmit  Operate while walking  Operate up to 300 meters. Receive signal with 95% success rate.  Voice Transmission Bandwidth  Maintain secure communications Less than 10% interception rate  Handheld and less than 2lbs.

4. 4 SDP 11 FPR Team Goeckel Software Requirements RX Radio TX Radio

5. 5 SDP 11 FPR Team Goeckel Radio Diagram Transceiver Antenna Microphone Speaker Transmitter Receiver Microcontroller

6. 6 SDP 11 FPR Team Goeckel Design Challenges  Noise Appropriate Signal Threshold Duration for transmission  Variable transmission strength  Procuring reliable data  Demonstrate functioning system Computer display of radio activity  Consistent receiving and transmitting

7. 7 SDP 11 FPR Team Goeckel Schematic

8. 8 SDP 11 FPR Team Goeckel PCB

9. 9 SDP 11 FPR Team Goeckel Testing Conclusion difference of.1 volt B1 RSSIB2 RSSI 2.02.08 2.041.75 1.871.74 1.781.74 1.831.8 1.741.75 1.81.6

10. 10 SDP 11 FPR Team Goeckel Simulation Data

11. 11 SDP 11 FPR Team Goeckel How Data Was Found

12. 12 SDP 11 FPR Team Goeckel How Data Was Found Distance

13. 13 SDP 11 FPR Team Goeckel How Data Was Found Angle

14. 14 SDP 11 FPR Team Goeckel How Data Was Found If wall wallhit++

15. 15 SDP 11 FPR Team Goeckel How Data Was Found If wall wallhit++

16. 16 SDP 11 FPR Team Goeckel How Data Was Found Power here is getPathloss

17. 17 SDP 11 FPR Team Goeckel Radio Program Flow Chart

18. 18 SDP 11 FPR Team Goeckel GUI Demonstration

19. 19 SDP 11 FPR Team Goeckel Radio Demonstration

20. 20 SDP 11 FPR Team Goeckel System Requirements  Battery life of at least 12 hours  Receive and transmit  Operate while walking  Operate up to 300 meters. Receive signal with 95% success rate.  Voice Transmission Bandwidth  Maintain secure communications Less than 10% interception rate  Handheld and less than 2lbs.

21. 21 SDP 11 FPR Team Goeckel Questions?