Programmable Musical Organ Circuit

In this post we are going to construct a musical organ circuit whose musical tone can be programmed by adjusting 10 pre-sent resistors in the circuit and the speed of the music played can also be controlled. The proposed circuit is based on IC 555 and IC 4017; it has two IC 555s and one […]

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Simple Electronic Pinball Game Circuit

This highly portable electronic pocket pinbaIl game circuit may not exactly be a substitute for its big brothers in the amusement arcades, but it still provides a lot of fun. The circuit is relatively simple: three CMOS ICs, nine LEDs, six resistors, one capacitor, one push- button and a 9 V battery. Together with R1, […]

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