Serial TX and RX in 8051.

    Here we display the serial data in LCD.

  This program is written in embedded C.
Simulated in Proteus

Get code Here 
Get Circuit diagram and Simulation Here
Get Hex file here

Serial ADC0831 Interfaced With 8051

ADC0831 is an 8 pin IC with 8-bit serial data output receive the output from ADC high to low pulse is given at CS (chip select) pin of ADC form controller. ADC requires delay of two clock pulses before starting data conversion. At the second clock cycle, ADC sends a ‘0’ bit to the controller which indicates that the upcoming bits are the data bits.

ADC needs eight clock pulses to send 8-bit digital output. This digital data is received bit by bit and stored in a variable.  The data is converted to its corresponding ASCII value and sent to LCD for display. The connections of LCD with microcontroller are shown in circuit diagram. The analog signals are generated by at a variable resistance (preset) which is connected to input pin of ADC0831.  

Algorithm

1.      Initialize LCD.

2.      Send a high to low pulse to CS pin to initialize conversion.

3.      Send two clock pulses.

4.      Receive the data bits by one by one and store it in a variable.

5.      Display its corresponding decimal value on LCD.

This code is  written in Embedded C and compiled  in keil uvision 3 and simulated in proteus simulation software.

Here you can get Code, circuit, and simulation:

For Embedded C  Code click here

For Protues Simulation Click Here

For Hex Code Click Here

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Give your feedback and other related ques mail me at manirandd@gmail.com

ADC 0808 INTERFACE WITH 8051

                                    ADC0808 is an 8 bit analog to digital converter with eight input analog channels, i.e., it can take eight different analog inputs. The input which is to be converted to digital form can be selected by using three address lines. The voltage reference can be set using the Vref+ and Vref- pins. The step size is decided based on set reference value. Step size is the change in analog input to cause a unit change in the output of ADC. The default step size is 19.53mV corresponding to 5V reference voltage. ADC0808 needs an external clock to operate unlike ADC0804 which has an internal clock. The ADC needs some specific control signals for its operations like start conversion and bring data to output pins. When the conversion is complete the EOC pins goes low to indicate the end of conversion and data ready to be picked up.

ADC 0808 is interfaced with 8051 to read more than one analog input. here we can read 8 analog inputs. 

                    we read analog inputs using adc0808 and displaying value in LCD.

This code is  written in Embedded C and compiled  in keil uvision 3 and simulated in proteus simulation software.

Here you can get Code, circuit, and simulation:

For Embedded C  Code click here

For Protues Simulation Click Here

For Hex Code Click Here

Leave your comments to improve my site.
Give your feedback and other related ques mail me at manirandd@gmail.com

4 Bit Lcd With Dancing Display

Here we have interfaced LCD with AT89c51. LCD has 16 pins, in that 8 pins for data, and 3 pins for controlling lcd. 
But in 8051, we have totally 32 pins for interfacing. so if we use 11 pins for LCD interfacing, then only few pins will be available for others. 
So we interface LCD in 4 bit mode. So We need 4 pins for Data and 2 pins(RS,EN) for controlling.
So that we reduce 5 pins.

For lcd in 4bit mode with dancing display,
This code is compiled  in keil uvision 3 and simulated in proteus simulation software.
here you can use this in advertisement display boards,   
get code, circuit diagram and simulation.

For code in LCD 4 bit mode click here
For Simulation and circuit click here


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Give your feedback and other related ques mail me at manirandd@gmail.com

LCD SCROLLING DISPLAY USING 8051

                             Here we are going to scroll lcd display using 8051.
LCD is important Display device. here 1st we display some words in lcd, then we scroll it.

Here we have connected LCD in PORT 2 of 8051, then RS pin of LCD is connected with P3.6 pin and EN pin connected with P3.7 of 8051.

 Here we have used some commands to rotate the whole display to left.

We have used keil uvision 3 for compiling code for 8051 and code written in Embedded C.
then we have designed circuit in Proteus and simulated in that same software.

We can download code click here
For circuit and simulation click here
For hex file click here

Visit my blog frequently for codes and circuits.
i'll write programs and give simulation level output for you, if you'll ask anything related to embedded systems.

Always welcome yours comments.
leave your comments here, or mail  me @ manirandd@gmail.com
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RTC DS1307 INTERFACING WITH AT89C51

                   Here RTC (Real time clock) is the heart of timing systems. Nowadays all the systems are running based on time, here rtc has inbuilt battery backup to keep on running without external supply.
it updates it's register without external power supply. 
We can see many applications based on RTC in day to day life, for Ex., Mobile phone is the essential one.

Here we have interfaced RTC DS1307 with AT89c51 using I2C(Inter Integrated circuit).

here the code has been written in Embedded C and compiled using Keil uvision 3. and simulated in proteus 6.4. 

Operating system Windows 7. 
If you want any guidelines to install proteus in windows 7, just mail me or comment here.

You can download c file from here
Hex file available here
For Simulation and circuit of RTC with AT89C51 click here

LCD Display in 4 bit Mode

     Here we have interfaced LCD with AT89c51. LCD has 16 pins, in that 8 pins for data, and 3 pins for controlling lcd. 
But in 8051, we have totally 32 pins for interfacing. so if we use 11 pins for LCD interfacing, then only few pins will be available for others. 
So we interface LCD in 4 bit mode. So We need 4 pins for Data and 2 pins(RS,EN) for controlling.
So that we reduce 5 pins.

For lcd in 4bit mode see the following code.

For code in LCD 4 bit mode click here
For Simulation and circuit click here


Leave your comments to improve my site.
Give your feedback and other related ques mail me at manirandd@gmail.com