A piano is a very complex instrument. put the wires from the battery holder into the board. 505 notes. The basic astable oscillator portion is no problem, but when I wired a switch in (a normally open momentary switch) it behaves the opposite of how I expect (there's a constant tone, and when I press the button it interrupts the tone.). How do the strings get into the piano? any idea how to eliminate the beeb sound plz ? You should cover the joints in heat shrink tubing or tape to make them stronger, Adding an led that shows when it is on is useful as this circuit gives of no sound when i not being played, a led will stop you forgetting to turn it off. the 100n capacitor is also placed beside the two jumpers. […] I have a big problem. the black circles represent where the battery leads are going to go, i added a jumper wire from pin 7 to a hole next to the 10k resistor, i added the last 1k resistor and soldered it next to he end of the jumper wire and connected them all together with a solder bridge, i used one of the legs of the resistor to conect the jumper, 10k resistor and the 1k resistor to a hole next to where the positive battery lead will go, i attached jumpers going up to the positive terminal from pins 4 and 8. i will make a solder bridge underneath the board to connect together all the wires that need to be attached to ground. It’s a string instrument because it uses strings to produce sound. 5 years ago, Are the buttons orientated correctly? With some craft supplies and cardboard, you can make a model of a piano. i had to leave room for the resistors to go along the top so i left two spare rows above the buttons.i used the leads i had cut of the capacitor to connect the negatives of the buttons. be careful with the polarity of the capacitor, the longer lead is the positive end and this is attached to pin 3, the negative end also has a grey stripe on to show its negative, putting it in the wrong way round can damage the capacitor. �#o1�bi�6����ś��0td�5H���;��|�u5���f�Ƈ���h����xL�7�����^^ I'm currently learning about electronics, but in an intro class. 81 notes. Pianos come in different sizes and shapes, from grand concert pianos to small upright ones. one to the middle and one to the outside prong. It makes those sounds by hitting the strings with a component called the hammer, which places it in the percussion classification, as well. on Introduction. �" to make the piano work you need to add the 1k resistors between the points of the button. http://www.ti.com/lit/ds/symlink/lm555.pdfthe operating voltage for a 555 timer is 4.5-16v so any that outputs between them, 9v is probably easiest or 4 AA's would work and last longer. The working portion of the piano is called the action. hope this helps, all the best. 555 ic upside down? Any ideas?Thanks very much. As mentioned, we will base our piano keyboard off the one made by Keith. I don't have 2-pin push buttons. MAKE A MAKEY MAKEY PIANO! Piano growth occurs primarily from the cumulative time spent practicing, even if this is sporadic. I tried to replace some components but they function all well. I was wondering if just anyone can help me understand how it works, and why it gets hooked up the way it is?Thanks! 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