Basically a slightly less polished version of this: [1] [2] The above paper goes further implementing two way comms using only a LEDs [1] https://www.research

Basically a slightly less polished version of this: [1] [2] The above paper goes further implementing two way comms using only a LEDs [1] https://www.researchgate.net/publication/221568729_Very_Low-Cost_Sensing_and_Communication_Using_Bidirectional_LEDs https://www.researchgate.net/publication/221568729_Very_Low-... [2] https://courses.cs.washington.edu/courses/cse590u/03su/papers/low-cost-sense-ubicomp03.pdf https://courses.cs.washington.edu/courses/cse590u/03su/paper...