SOS Beacon Betina Tan, Shannon Flood, Jeremiah Jacinto, David Hom (bmt75,shf36,jmj216,dhh33)@scarletmail.rutgers.edu Advisor: Prof. Caggiano Goal Results Outdoor activities like hiking are very popular and one prevalent • Transmitting at 1MHz which falls within the AM Radio band (535-1605 kHz) issue hikers can run into is getting lost while in unfamiliar • Transmitting an SOS distress signal and GPS coordinates of the beacon in Morse Code territories. Our goal is to help people in that situation by creating • Designed a PCB for a more compact device a solar powered beacon that transmits an SOS signal and its • Designed an outer case via CAD and 3D printing for the beacon to make it more suitable for the latitude and longitude in Morse Code. With this invention, outdoors people will be able to receive the assistance they need should • Data updates every 2 minutes and 7 seconds they get lost in places without cell phone reception. • Current ratings: 5mA for Arduino Output LOW and 48mA for Arduino Output HIGH Methodology Research Challenges Future Direction • GPS Module: Obtaining the data from the GPS • Extending the range of the transmitter circuit was difficult as it required being outdoors. from 5 feet to 100 miles. This is the output of • Printing the PCB: When designing the PCB, there • Creating a waterproof shell to make it more the GPS data to a were too many parts to place on one side of the appropriate for outdoor conditions Morse format. The board, so we had to use a double sided PCB. • Develop a better interior design to arrange the string is converted into • Space: We wanted to make the beacon about components more efficiently and to allow digital pulses that we the size of a mobile device so parts like the solar better ventilation transmit to a receiving panel had to be limited in size radio. Acknowledgement References We would like to thank Professor Caggiano for all of his help in [1] Christofi, George. “Build AM Radio Transmitter - SIMPLE Method - How To Make.” YouTube, YouTube, 13 Dec. 2018, advising us on our senior design project. We would also like to www.youtube.com/watch?v=oCt7ExvpfRs&list=PLi26Z8JkrdYPRiFE_nMKPhiujgNYxBmef&index=5&t=0s thank Professor Godrich for assisting us in making our device [2] “LibraryTutorial.” Arduino, www.arduino.cc/en/Hacking/libraryTutorial. [3] Sparkfun Electronoics. Sunny Buddy Solar Charger V13 Hookup Guide, learn.sparkfun.com/tutorials/sunny-buddy-solar- solar powered. Finally, we would like to thank Kevin Wine for his charger-v13-hookup-guide-?_ga=2.151770042.2059966590.1555355064-422467384.1553953706. continuous assistance in improving our design. .