Thanks for spending your time to read this Instructable. You'll also receive our free newsletter which is exclusive to our email subscribers only ! If you liked it please share it with a friend.Īlso, I'd really appreciate it for you to join my email subscriber list where we'll keep you up to date with our latest videos, tutorials and articles relating to microcontrollers, Arduino and other electronics information. I hope this Tutorial has been useful to you. The code and schematic is available from my website at the following link: The rain gauge is a self-emptying bucket-type rain gauge which activates a momentary button closure for each 0.011' of rain that are collected. The total rainfall value is then displayed on a 16 x 2 LCD Display. The code monitors the pin 2 input and every time it is set to high, the total rainfall value is incremented by 0.8mm. As the sensor component is a reed switch, the only circuit required is a 10k pull up resistor to hold the signal to ground when inactive and pull up the signal to +5V when the reed switch is activated. The rain gauge monitor circuit is very simple as we only use one pin of the Arduino which is pin 2.
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