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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

Description of ADC The ADC are analog to digital converters have a variety of applications as an intermediate device that converts analog signals to digital form. These signals are used to be digitized for processing digital processors. For example we found a wide variety of sensors that convert the physical characteristics of the sensor into analog signals such as heart rate, temperature, pressure, force, distance, etc. The ADC0804 The ADC0804 is a converter from analog to digital 8 bits. This ADC0804 has only one analog input channel with a digital output eight bits that can mostra 256 values ​​of different measures. The step size is adjusted by setting the reference voltage in pin9 the reference input voltage can be adjusted to allow encoding any smaller range for the entire 8-bit resolution analog voltage. When the voltage reference pin is not connected to the ADC0804, the reference voltage defaults to the operating voltage, ie, Vcc. The step size is 19.53mV 5V (5V / 255),

Description counter 0-9 This counter 0-9 in easy to assemble, basic to use for other more complex where we make use of integrated circuits didactically as these could be replaced by other more complex circuits with simple application of microcontrollers. Counter operation 0-9. This counter circuit is formed by a generator essentially comprises a wave 555 which functions as a circuit astable multivibrator operating this type is characterized by an output square waveform with 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 electrolytic capacitor connected to pin 2 of land. The pulse output can be varied by 100K ohm potentiometer (RV1). Circuit counter

Small projects of digital electronics are an affordable option for students, teachers and parents as they do not require expensive laboratory and fully stocked. Many young people want to learn about digital electronics and build their own devices as well as work with the parts of a computer and analyze how the circuits of the digital world work, but can not do in their classrooms or at home because it is too expensive. There are several small projects that enable young people to practice the skills necessary to enter college skills, although they are more easily and used parts are readily available.

Start making a simple program in which we in assembly code using PIC 16F877A to turn on and off an LED by pressing a button as shown in the diagram. We will use two ports of the PIC 16F877A, port B and port D, declare the B port as input and the D port will be configured as an output. In the graph we can see that the pin RB0 is set button and a resistor in a pull-up configuration, when you are not pressing the button it gets a high (5V) to the RB0 input and when pressed he gets a level low (0V). In the output RD0 to turn on the led its output should be at a low level so when developing the program in assembler we test the pin B0 and if a high level put a high value on the output RD0 that will keep off LED, otherwise put a low value on the output RD0 which will cause the LED lights.

Sold by Watterott Robot V2 Starter Kit is a great platform for robots beginners. There's even a book about it: "robot build with Arduino"Markus Knapp. Enough Advertising made. I have assembled this robot with self-lasered parts. Here are misbehaving with some things that can be eradicated by simple means. An educational robot to teach kids how to build and code

This pinch project was realized with the ATM-18 controller module.This controller module has an ATmega88 microcontroller as and is a collaboration between Elektor and CC2 (Computer Club 2) . The Wii Nunchuk is addressed via the I2C interface. Resourceful tinkerers like Chad Phillips have the protocol and encryption algorithm found.

We all are aware to custom characters used in various display module.Heart,various style of smileys,arrow are the foremost usually used custom characters. Thus during this tutorial we are going to learn how to display custom characters in LCD using arduino uno board . This project is done by using of arduino uno board and 16*2 LCD module. custom character display

For some time now I have watched the market for microcontrollers that have .NET runs, more precisely .NET micro framework or NETMF short. To program these boards exclusively in C #. Now I have added to it and get me a FEZ Domino board. It costs € 75.-, but also has a quite generous feature set with USB host and microSD card. Let's see if this is good for a robot.

Ready Bluetooth solutions are often quite expensive. The cheapest Bluetooth modules that are currently commercially available, there are from the Chinese manufacturer Rayson . The modules BTM-112 (Class 2) and BTM-222 (Class 1) each cost around 15 €. Since the modules are designed for 3.3V supply voltage is required for connection to a 5V system in addition to a 3.3V voltage regulator for 2 level converter (Level Shifter) for the UART signals. In addition, you do not want to give up a status display with LED safely. The price of a module is still all in all about 20 €.