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I present to you the first 1 Million (1000000) digits of π  3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173 ...
  I first saw this discussion and it turned out sound was a good choice to transmit data one way>How to transmit data underwater over 40m  So, I wanted to make a little project that demonstrates that possibility.   The Idea Procedure The Scrapped Method New idea Part Required Assembling Schematic for receiver. Credit : the hackaday post Schematic for Transmitter is pretty simple: Working Code Setting up Blynk Application - Cloud conne ...