Rain alarm project for engineering students with schematic diagram

Make a Rain alarm project ,this is specially for students of engineering .

Rain alarm project diagram 

Equipments :

• Leds
• 278K resistor .
• 270Ohm resistor.
• 470K resistor.
• 8 ohms speaker.
• NE555 Ic.
• 220uf 12V capacitors.

Tools : Soldering gun,soldering lead,Wires,Circuit boad.

Water level alarm by 555 timer ic with schematic diagram .

Water level alarm by 555 timer ic with schematic diagram for engineering students projects.

Water level alarm by 555 timer ic

Use 9 volt battery.

Make a good flash light with 1.5 volt battery.

Need to make flash light 

• 2N4401 Transistor.
• 1.5 Volt BATTERY.
• 1 wat LED powerful battery.
• 4.7 K resistor. 
• 1 touch switch.

Now connect the all equipment like as bellow given diagram.

Circuit diagram to make flash light with 1.5 volts battery.

Flash light with 1.5 volt battery