A simple project using microcontroller AT89S51 to control the speed of 12V fan according to the surrounding temperature. In this project we use the concept of PWM (pulse width modulation) to increase or decrease the speed of fan. We also interface 2*16 characters LCD which shows the outside temperature through the temperature sensor. Followings are…
ADC with AT89C51 Microcontroller
Introduction: In our daily life, anything we deal like sound, pressure, voltage or any measurable quantity, are usually in analog form. So what if we want to interface any analog sensor with our digital controllers? There must be something that translate the analog inputs to digital output, and so Analog to digital convertors come to…