PIC Microcontroller Tutorial

Temperature measurement using PIC18F4580 microcontroller Temperature measurement  Hi every one this is me Owais khan from microcontrollerpicavr.blogspot.com. During Post you will learn the way how to design an Embedded system to measure temperature using PIC18F4580,we know that in an electronic instrumentation system, it consist of number of components which are doing the measurements and giving their output as the results of the measurements. Temperature, light intensity, flow and speed are the examples of physical parameters that can be converted in to an electrical signals using Transducers. Here, electrical signal means the resulted information generated from transducer in the form of resistance, current, voltage or capacitance.                                                       There are...

Lack of proper home security is just is dangerous driving your car among your kids without a seat belt.  The world is cruel and offers a lot of risk including home invasion. In fact, recent statistics indicate 500 break-ins in every passing second, there are certain things you can do to secure your home, such as installing a digital lock system. Today, I am presenting  Digital Electronic Door Lock developed with PIC Microcontroller and simulated in Proteus. When I was writing its software, the first thing that came to my mind is the password which is the only key to open the lock. The owner of the house must know the correct password otherwise lock will ask for code again. What if someone keeps on trying to attempt the wrong code? Here we need an alarming situation, in that case, the lock will start a buzzer. ☺     It’s fairly clear from the above figure that I have used a PIC Microco...

Keypad Interfacing with PIC18 microcontroller KEYPAD INTERFACING Keypad and LCDs are the most widely used input/output devices and a  basic understanding of them is essential. In this Post, we first discuss keypad  fundamentals, along with key press detection and key identification mechanisms. Then we show how a keypad is interfaced to a PIC18. Interfacing the keypad to the PIC18 At lowest level, keypads are arranged in a matrix of rows and columns, PIC controller uses two 8 bit ports to entertain 8 x 8 key matrix to connect it.   Connection establish between row and column whenever a key is pressed, in any other case connection considered to be open between row and column.  Generally, In personal computers keyboards, there is also a  microcontroller that can handle hardware and software interfacing of the keyboard.   In a simple way ,Read only memory of microcontroller utilized to store the code to scan the keys const...