All Resistors are 1/4 Watt Unless Otherwise Specified
All resistors connected at the gate inputs are 330K,
All LED series resistors are 2K7,
LED color as per choice,
All Gates are from 2 nos. IC 4011 (Quadruple NAND Gate),
All capacitors 0.1 uF / 50V Ceramic Disc,
Transistor base resistor is 150 K
Transistor BC547 = 1 no,
Buzzer Coil = 1 no,
Piezo Transducer 3-contact = 1 no,
Battery 9V, (A 12 V DC Adapter is Recommended if Used Continuously),
General Purpose Board as Per Size,
Assorted Wire Pack (7/36)
Suitable Plastic Enclosure.
The following construction clues will help you to understand better regarding how to build a water level meter.