lets to build mini organ keyboard


Posted on Feb 6, 2014

We can connect a output of pin 5 on the UM3511-IC to drive a transistor output to emit loud sound out to the speakers directly. For the variable resistor-VR1 act as determine a frequency of the oscillator circuit. When we created successfully. Should be adjusted to the correct value. When adjusted, you may use the normal resistor instead. -The switch-S1 as an option act the work of circuit that


lets to build mini organ keyboard
Click here to download the full size of the above Circuit.

music will be played by the application of the factory, or will play music as we have played own. From pushing keyboard as by various notes.




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