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Lesson 23: Doorbell
23.1 Overview
In this lesson we are going to learn how to make a Doorbell.
23.2 Components Required
1 x Breadboard Power Supply
1 x 9V Battery
1 x 9V Battery Connector
1 x Breadboard 830p
2 x NE555 Timer
1 x 1 MΩ resistor
3 x 10 KΩ resistor
3 x 1 KΩ resistor
1 x 1 uF Capacitor
2 x 100 nF Capacitor
1 x push Button
1 x Passive Buzzer
3 x 2N2222 NPN Transistor
23 x M-M wires (Male to Male jumper wires)
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Electronics Starter Kit r.00 www.plusivo.com
