Analog Pressure sensor
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When you want to measure pressure of liquids like oil or water, you could buy one of the pressure sensors on the internet, like this one:
It is very easy to install, has an analog output and a linear conversion. There are however two challenges: 1 If you want to measure pressure in Bar, how is it converted from PSI 2 How can voltages higher than 3.3 volts be measured with the on-board ADC 3 How can you make sensible readings with ESPEasy
