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If you use the UART then you must use a pull up resistor. If you are using a software serial routine, the idle state is as follows Low for Inverted and High for True. Use pull up or pull downs as needed. It is never good practice to allow an input to float.
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
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Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
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There simply is no "Happy Spam" If you do it you will disappear from this forum.
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