Simple Music Keyboard circuit
This is simple music keyboard circuit. The origin frequency sound circuit model astable multi vibrator. if press switch S1 the circuit will begin the work. [...]
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March 13, 2017
NE556 Dual timer Datasheet pinout and example circuits
Use NE556 better. Why? Imagine you use often the 555 timer circuit. It is so great, right? Of course, we should improve our circuit. Small and save money. NE556 is…
March 1, 2017
Mini organ keyboard circuit using UM3511
The previous day my son said ” A friend has a mini organ. Casio SA-76 44 Key Mini Keyboard, Orange It is Good quality but expensive. My son would have…
December 30, 2012