Pruyn 555 Timer Project Toy Organ

This project is to make produce a variety of noises when the buttons are pressed. With the way this is designed it will only work when one of the buttons is pressed.

1 555 Timer

8 1K Resistors

1 10K Potentiometer

1 100 nF capacitor

1 10 microfarad capacitor

1 8R Speaker

8 Switches

Wires as needed

Gather the materials listed above

Make the organ using this schematic

Put the 555 timer on the board. Connect the 1 end to ground, connect the 2 and 6 end to before the 100 nf capacitor, connect the 3 end to the 10 uf capacitor, connect the 4 and 8 end to before the first 1k resistor that is before the potentiometer, Connect the 7 end to after that resistor but before the potentiometer, and finally leave the 5 end alone forever.

First connect the 10 uf capacitor to the 3 terminal of the 555 timer, then to the 8R speaker. Next connect the 100 nf capacitor to the 6 and 2 terminal of the 555 timer, then from that capacitor, connect to the first terminal of the timer and the end of the speaker. Finally connect all of these to ground.

Next up choose your favorite 9v power source and connect the positive end, as well as the 8th and 4th terminal of the 555 timer to a 1k resistor. Connect this resistor to the middle prong of the potentiometer. At the same spot also connect the 7th terminal of the timer.

On the left prong of the potentiometer connect a 1k resistor going to the second switch, the first switch. On the other side of the first switch , connect a wire linking each of the buttons as well as a wire that goes to the 100 nf capacitor. following the 1k resistor, connect it to the second switch as well as to another 1k resistor, on the other side of this switch add a wire going from the output of the switch to the output of the first switch. Repeat this process for each of the 6 buttons.

Ideally now when you press a button the speaker should produce a noise. This noise will vary in frequency as the charge goes through more resistors when you complete the circuit by pressing the button. Even the potentiometer can be used to change the range of notes you can get by adjusting the initial resistance of the circuit. I choose to build this project as I found it very interesting to build and mess around with the final product and see what songs I can recreate.