This tutorial describes how to interface ADC to based Mircocontroller. The article also provides a sample tested Technology is an online. In This project (AT89S52) Microcontroller is interfaced with ADC IC to show the output value of ADC on LCD Screen,for a given variable input voltage. Interfacing ADC with three LDR using microcontroller and LCD. The project includes circuit diagram and source code in C.
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The sensors used to measure the physical quantities give the output in analog form, which are converted to digital through an ADC for further processing.
The output of the sensor is displayed on the LCD. The external clock needed by the ADC is provided by the controller using interrupt. The output is displayed on the LCD.
The circuit is divided into four parts: Its applications could be measuring and monitoring the light intensity level. At any point of time only one input can be read. The output of LDR. An LDR will detect the intensity of light and generate voltage depending upon light intensity.
Interfacing ADC0808 To 8051
LCD Liquid Crystal Display screen is an electronic display module and find a wide range of applications. A 16×2 LCD display is very basic module and is very commonly used in various devices and circuits. The resistance is varied by The resistance decreases as the intensity of incident light increases, and vice versa. In the absence of light, LDR exhibits a 805 of the order of mega-ohms which decreases to few The input which is to be converted to digital form This high-density System-in-Package SiP integrates controller, power switches, and support components.
Skip to main content. A clock of frequency KHz is generated using Timer0 in the interrupt mode.
Pin10 of the ADC is connected to pin8 P1. EOC, pin7 is connected to pin3 P1. Port P2 pins of controller is used to send the data to the LCD pins The controller monitors the output of the three sensors, from the ADC, serially one after the other and keeps displaying them on LCD.
The output of the LDR varies with the intensity of light. The output value of ADC varies in the range 0 to The output is displayed as a number.
How to interface ADC0808 with 8051 microcontroller (AT89C51) using clock from D-flip flop
Refer displaying a number on 16×2 LCD. This Code is only visible to Registered adc0880. A preset is a three legged electronic component which can be made to offer varying resistance in a circuit.
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