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Presentation (Final System and both demo-systems):

https://www.youtube.com/playlist?list=PLAWcwIUZKg6DyM90fNCLBrv4EtDMB4HeP

Description:

Our project is a visual light communications system that can transmit and receive text (digital data) and sound (analog data) to distances greater than 14 FT. The prject is comprised of two sub-systems:

  • Digital: Our approach was to use a microcontroller to serialize text data to be transmitted via laser module. To receive this data we used a module we designed our selves which consists of a photodiode, two 220K resistors, a 10k potentiometer, and and OP Amp
  • Analog: Using a spliced aux cord connected to our phone we were able to send analog signals through our laser module and receive them using a solar panel an amplifier to play these signals through a speaker

Languages Used:

  • C++ (Audino IDE)