KIT INCLUDES:

• Breadboard 830 points 1
• 9v Battery-1
• Battery snapper 1
• Led(red,green,yellow) 2 piece each
• Resistor 330 ohm 2
• Transistor bc547 5
• Single stand wire 2mt 1
• B-10 Buzzer -1

HARDWARE REQUIRED

• Breadboard 830 points 1
• 9v Battery-1
• Battery snapper 1
• Led(red,green,yellow) 2 piece each
• Resistor 330 ohm 2
• Transistor bc547 5
• Single stand wire 2mt 1
• B-10 Buzzer -1

SPECIFICATIONS

Power supply 9V( from the 9v battery)

PIN DESCRIPTION

Led

BC547 TRANSISTOR

CIRCUIT DESCRIPTION

Connect the Components according to the given diagram above.

• Connect the Components according to the given diagram above.
• First TRANSISTOR BC547 collector connect with 330-ohm resistor to positive rail on the breadboard
• Emitter connects to the positive terminal of led and negative terminal of led connects to the negative rail on breadboard
• Base wire connects to the water tank

• Second TRANSISTOR BC547 collector connect with 330-ohm resistor to positive rail on breadboard
• Emitter connects to positive terminal of led and negative terminal of led connects to the negative rail on breadboard
• Base wire connects to the water tank
• Third TRANSISTOR BC547 collector connect with 330 ohm resistor to positive rail on breadboard
• Emitter connects to positive terminal of led and negative terminal of led connects to the negative rail on breadboard
• Base wire connects to the water tank
• Positive wire from the positive rail on the breadboard connects with the water level.
• Attach the buzzer on the breadboard.
• Connect the positive terminal of the buzzer to the collector pin of the fourth transistor and the negative terminal of the buzzer to the GND rail of the breadboard.
• Connect the emitter pin of forth Transistor to the positive rail on the breadboard.

• Then connect the battery.

WORKING

When the water level reaches to point A circuit with green led & Transistor Q1 gets completed and green led glows.

Similarly when water level reaches to point B , Circuit with yellow led and transistor Q2 gets completed and yellow led glows.

Same goes with point C and finally when tank gets full at point D circuit with buzzer gets completed and buzzer starts beeping.