Welcome to the 3rd part of RF Communication tutorial. In the last two parts I have introduced the basics of RF Communication. RF Communication Between Microcontrollers – Part I : Introduction to RF Communication and Modules. RF Communication Between [...]

Real Time Clocks, as the name suggests are clock modules. They are available as integrated circuits (ICs) and manages timing like a clock. Some RTC ICs also manages date like a calendar. The main advantage is that they have a system of battery backup which keeps the clock/ca lender [...]

Hello Friends, Welcome back to the Part II of RF Communication tutorial. Here I will show you the basic working of RF modules and how to send and receive data. Please see the Part I of this tutorial for basic introduction. You should also be familiar with RS232 [...]

Here I will highlight some features of C language commonly used in 8 bit embedded platforms like 8051, AVR and PICs. While programming microcontrollers in C most of the time we have to deal with registers. Most common tasks are setting and clearing bits in a register and check [...]

When I started using USBasp (a great programmer for AVRs), I soon realized that the avrdude (the software for driving USBasp) is not much usable. Sometimes it irritates me a lots because of its command line interface. Also the avrdude-gui is not much helpful as it was [...]

In this turorial we will see how we can easily interface a 24C series serial EEPROM with AVR microcontrollers. What is an EEPROM? An EEPROM is kinds of novalatile memory, that means it is used for storing digital data permanently without any power suply. EEPROM stands for Electrically Erasable Programmable Read [...]

This tutorial give you the details of synchronous serial communication, which is the basis of data transfer in communication standards like SPI and I2C. The tutorial is aimed for a beginner who has no experience or any idea of serial communication. So intermediate user who already has some idea [...]

In this tutorial we will set up the TIMER0 in fast pwm mode and use it to generate PWM signals of varying duty cycles. In this way we would be generating analog signals of voltages between 0 and 5v. In the example we will connect this output to a [...]

In the last tutorial you saw how the PWM technique helps us generate analog signals from a microcontroller. In this tutorial we will see how PWM generation is implemented with microcontrollers. Before you begin please see Introduction to PWM Introduction [...]

A digital device like a microcontroller can easily work with inputs and outputs that has only two state, on and off. So you can easily use it to control a LED's state i.e. on or off. In the same way you can use it to control any electrical device [...]

Till now we have seen the basics of RS232 communication, the function of level converter and the internal USART of AVR micro. After understanding the USART of AVR we have also written a easy to use function to initialize the USART. That was the first step to use RS232. [...]

Merry Christmas !!!