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Interfacing Keypad with 8051 Microcontroller using Keil C
Matrix Keypad Matrix Keypads are commonly used in calculators, telephones etc where a number of input switches are required. We know that matrix keypad is made by arranging push button switches in row and columns. In the straight forward way to connect a 4×4 keypad (16 switches) to a microcontroller we need 16 inputs pins. […]
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Interfacing Servo Motor with 8051 using Keil C
A servo motor uses servo mechanism, which is a closed loop mechanism that uses position feedback to control the precise angular position of the shaft. Stepper Motors, which is an open loop system can also be used for precise angular control. But Servo Motors are preferred in angular motion applications such as robotic arm. Moreover controlling of […]
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Interfacing Stepper Motor with 8051 using Keil C – AT89C51
A Stepper Motor is a brushless, synchronous DC Motor. It has many applications in the field of robotics and mechatronics. The total rotation of the motor is divided into steps. The angle of a single step is known as the stepper angle of the motor. There are two types of stepper motors Unipolar and Bipolar. Due to the ease […]
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Interfacing DC Motor with 8051 using L293D – AT89C51
In some of the electronics projects you may want to control a DC Motor with 8051 microcontroller. The maximum current that can be sourced or sunk from a 8051 microcontroller is 15 mA at 5v. But a DC Motor need currents very much more than that and it need voltages 6v, 12v, 24v etc, depending upon the type of motor […]
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Interfacing LCD with 8051 using Keil C – AT89C51
Liquid Crystal Display (LCD) is very commonly used electronic display module and having a wide range of applications such as calculators, laptops, mobile phones etc. 16×2 character lcd display is very basic module which is commonly used in electronics devices and projects. It can display 2 lines of 16 characters. Each character is displayed using […]
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Interfacing Relay with 8051 using Keil C – AT89C51
In some electronic applications we need to switch or control high voltages or high currents. In these cases we may use electromagnetic or solid state relays. For example, it can be used to control home appliances using low power electronic circuits. An electromagnetic relay is a switch which is used to switch High Voltage or Current using Low power […]
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Using Push Button Switch with 8051 and Keil C – AT89C51
This tutorial is for beginners in the field of microcontroller. In this case the microcontroller is AT89C51, a reprogrammable derivative of 8051. This purpose of this tutorial is to familiarize with the use of push button switch with the micro controller. It will be useful whenever a decision is to be made according to the press of a switch. If you […]
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LED Blinking using 8051 Microcontroller and Keil C – AT89C51
Introduction 8051 Microcontroller is a programmable device which is used for controlling purpose. Basically 8051 controller is Mask programmable means it will programmed at the time of manufacturing and will not programmed again, there is a derivative of 8051 microcontroller, 89c51 micro controller which is re-programmable. 89c51 is 8-bit device means it is capable of doing 8-bit operations. It have 4 ports which are used as input […]
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