How to make Arduino Water level alarm sensor
Project By: GeoProgrammer
Donate channel : https://www.paypal.me/GeoProgrammer
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Free download source code: http://www.mediafire.com/file/4ecjoxz...
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1X - 56K resistor
1X - 220 ohm resistor
1X - 470 ohm resistor
1X - BC547 transistor
1X - LED
1X - Piezo Buzzer
1X - Arduino uno