AT89S52

In modern electronics world, touch input is used almost everywhere, whether it can be a mobile phone or an LCD monitor switch. Capacitive touch is the widely used in the touch sensor segment and we previously used capacitive touch with a Raspberry Pi. Here in this project, we will interface touch sensor with 8051 microcontroller AT89S52. If you are new to 8051 microcontoller…

Frequency is defined as number of cycles per second. It can also be defined as reciprocal of total time ‘T’.  In this project we are going to count the number of pulses entering into Port 3.5 of 8051 microcontroller and display it on 16*2 LCD display. So basically we have measuring the frequency of signal at Port 3.5 of 8051. Here we have used AT89S52 8051 chip, and a…

In this project we are going to build an Android Phone controlled robot using 8051 microcontrollers and Bluetooth module. The robot is designed using DC motors and the direction of DC motors will be controlled by the commands received from the android application. The status of the robot is sent back to the Android app. This project will also help for interfacing of HC-05 Bluetooth module…

ADC is the Analog to Digital converter, which converts analog data into digital format; usually, it is used to convert analog voltage into digital format. Analog signal has an infinite no of values, like a sine wave or our speech, ADC converts them into particular levels or states, which can be measured in numbers as a physical quantity. Instead of continuous conversion, ADC…

Security is a major concern in our day to day life, and digital locks have become an important part of these security systems. There are many types technologies available to secure our place, like PIR Based security systems, RFID based Security system, Laser security alarms, bio-matrix systems etc. Even now, there are Digital locks which can be operated using our smart…

GSM module is used in many communication devices which are based on GSM (Global System for Mobile Communications) technology. It is used to interact with GSM network using a computer. GSM module only understands AT commands, and can respond accordingly. The most basic command is “AT”, if GSM respond OK then it is working good otherwise it respond with “ERROR”. There are…

A stepper motor is a brushless DC motor, which can be rotated in small angles; these angles are called steps. Generally, a stepper motor interfacing with 8051 uses 200 steps to complete a 360-degree rotation, which means it rotates 1.8 degrees per step. Stepper motor control using 8051 microcontroller is used in many devices which need precise rotational movement, like…

Servo motors are very useful in electronics and embedded systems. You can find the use of Servo motor everywhere around you, they are used in toys, robots, CD tray of computer, cars, aeroplane etc. The reason of this wide scope is that, servo motor is very reliable and precise. We can rotate it to any particular angle. They are available in wide range, form high torque motor…

Keypad interfacing with 8051 microcontroller represents one of the fundamental skills for embedded systems developers. Matrix keypads are an input device found in calculators, security systems, ATMs, and various industrial control panels. Keypads are widely used input devices in various electronics and embedded projects. They are used to take inputs in the form of …

Seven segment displays are important display units in Electronics and widely used to display numbers from 0 to 9. It can also display some character alphabets like A,B,C,H,F,E etc. In this tutorial, we are going to learn how to interface a 7 segment display with 8051 microcontroller. We are using AT89S52 microcontroller from 8051 series.

LED interfacing is the first thing one would try to do while getting started with any microcontroller. So here in this tutorial, we are going to interface an LED with an 8051 microcontroller, and we will write a C Program to blink the LED. We have used a very popular microcontroller, AT89S52, of the 8051 family, by ATMEL. LED interfacing with 8051 microcontroller…