Tutorial Making PIANO KEYBOARD with LM555 IC

Hi everyone, today I will guide you how to make a powerful piano keyboard with LM555 IC. OK let's go!

Piano keyboard description

Here we will show how to build a piano keyboard which generate simple electronic keyboard musical notes DO, RE, MI, FA, SOL, LA, SI, DO1 and RE1, as shown in the following diagram (keyboard piano).

Piano Keyboard with IC LM555

Piano keyboard operation circuit

This circuit has a piano keyboard wave generator essentially comprises a 555 which operates as an astable multivibrator circuit. This type of operation is characterized by an output square wave of width defined by the designer. The outgoing wave frequency can be controlled by the resistor is connected between pins 7-8 and 2-7 in addition to the capacitor connected to pin 2 grounded. The resulting frequency can be calculated under the following equation.

Where R eq is the result according to the push button is pressed on the keyboard piano.

Therefore we can in our piano keyboard similar sound of an electronic organ basic shape regulating the output frequency to musical notes

NOTE FREQUENCY RESISTANCE R eq

RE1 493Hz R2-R3

DO1 440Hz R2-R4

392Hz IF R2-R5

THE 349Hz R2-R6

SOL 329Hz R2-R7

FA 293Hz R2-R8

MI 261Hz R2-R9

RE 246Hz R2-R10

DO 200Hz R2-R11

Materials piano keyboard.

1 Resistance 10K Ohm 1/4 W
1 Resistance 8.2K Ohm 1/4 W
1 Resistance 5.6K Ohm 1/4 W
2 6.8K Ohm resistors 1/4 W.
2 4.7K Ohm Resistors 1/4 W
2 3.3K Ohm resistors 1/4 W.
2 2.2K ohm 1/4 W resistors
Ceramic Capacitor 10nF
1 Ceramic Capacitor 10nF
1 Ceramic Capacitor 100nf.
1 47uf 25v Electrolytic Capacitor
1 LM555 .
Speaker 8 Ohm 0.25W to 1W.
9 Push.

DOWNLOAD DIAGRAM PRINTED BOARD KEYBOARD PIANO

Want to know more about the 555? Comment below.

Comments

A basic Arduino Solar PV Monitor

I have just recently had solar pv installed, mainly to future proof my energy costs, I do not expect it to be like drilling for oil in my back garden, however the return looks to be encouraging. The install gives you another single unit meter, from this you will see the total amount the panels produce, but that is about it. I wanted to know how much the production was as it was happening, I discovered the light blinks on the front of the meter will flash 1000 times for each kWh of electricity which passes through. The rate of the flashing of the LED tells you how much power is currently passing through the meter. [ ]

Build a Key Operated Gate Locking System Circuit

This simple key-operated gate locking system allows only those persons who know the preset code to open the gate. The code is to be entered from the keypad within the preset time to operate the motor fitted in the gate. If anyone trying to open the gate presses a wrong key in the keypad, the system is disabled and, at the same time, sounds an alarm to alert you of an unauthorized entry. Figs 1 and 2 show the block and circuit diagrams of the key-operated code locking system, respectively. Connect points A, B, C, D, E, F and ground of the circuit to the respective points of the keypad. Keys S7, S16, S14 and S3 are used here for code entry, and the remaining keys are used for disabling the system. It is very important to press the keys in that order to form the code. To start the motor of the gate, press switches S7, S16, S14 and S3 sequentially. If the keys are pressed in a different order from the preset order, the system will lock automatically and the motor will not start. Fig. 1: Bl...

Apple releases TV spot for new iPods

Apple has just released a fun commercial to showcase its new line of iPod players and the various colours they come in. The TV spot titled ‘Bounce’, has a bunch of colourful iPod touch, iPod nano and iPod shuffles er…bouncing to music. With all that colour and dancing and bouncing, you may forget that Apple’s latest gen line of iPods has some other awesome features. For instance, the fifth gen iPod touch comes with Siri, 4-inch retina display and an A5 chipset. Maybe the next ad will showcase some of these features with less bouncing.link

TREE

Search This Blog