8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes : Forum / topic http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb Creative Commons LicenseThis work is licensed under a Creative Commons Attribution-Noncommercial 2.5 India License.Rickey's World Disclaimer Ajay Bhargav - contact@nospam.com contact@nospam.com Mon, 01 Dec 2008 13:34:14 -0800 Mon, 01 Dec 2008 13:34:14 -0800 http://backend.userland.com/rss e107 (http://e107.org) 60 Search Search 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes query http://www.8051projects.net/search.php c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html I am working on my final year project. I am using signal generator to generate a sine wave of frequency 50 hz. After this comes the ADC0804 by national semiconductors. ADC is connected to microcontroller c51 (atmel) which is connected to LCD.
Objective is to collect 100 samples from the ADC and display the peak value on LCD. Means adc samples the 0 to 5v sine wave (50hz) and displays the peak value on LCD.
I have written the code in C and tried proteus for simulation but its not working i m posting my code and cct diagram plz help me to find the bug
backup_of_nicro.zip
micro_code_adc_lcd.zip]]> Thu, 03 Jul 2008 07:06:44 -0700 http://www.8051projects.net/forum-t10563.html Re: c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html well i havnt implemented it on hardware yet and was trying to simulate on proteus.
I wasnt getting anything on LCD
//you haven't provided Vcc supply to the micro, you have used battery supply, the micro's power supply pins i,e Vcc and GND will be hidden and simulator connects them to supply while it is running.
//


what should i do with pin no 31 then?


//in the lcd you should use a 10k pot between VCC, VSS and VEE for contrast control
//

Can you provide me any example of the above statement......i m confused

thnx

bilal]]> bilalshah<ousmanshahzad@nospam.com> Thu, 03 Jul 2008 23:57:46 -0700 http://www.8051projects.net/forum-t10563.html Re: c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html My advice would be to try and implement in hardware rather than use proteus.And when you do,remember to use pullups on port0.
The code seems correct except for one small error in the convertanddisplay() routine.
Here the 3rd line should be : x = binbyte/10;
Of course this wouldn't stop from atleast junk values showing up.

What error are you getting? No display?]]> sashijoseph<sashijoseph@nospam.com> Thu, 03 Jul 2008 09:07:56 -0700 http://www.8051projects.net/forum-t10563.html Re: c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html
you haven't provided Vcc supply to the micro, you have used battery supply, the micro's power supply pins i,e Vcc and GND will be hidden and simulator connects them to supply while it is running.

in the lcd you should use a 10k pot between VCC, VSS and VEE for contrast control

i doubt VSM simulator model for ADC0804( i,e DLL file ) is not available in proteus there's only schematic model, so i guess you cannot simulate this ADC


Arun
]]> Arun Kumar V<nura1002003@nospam.com> Thu, 03 Jul 2008 18:24:12 -0700 http://www.8051projects.net/forum-t10563.html Re: c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html Ajay<contact@nospam.com> Thu, 03 Jul 2008 23:09:34 -0700 http://www.8051projects.net/forum-t10563.html Re: c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html
you haven't provided Vcc supply to the micro, you have used battery supply, the micro's power supply pins i,e Vcc and GND will be hidden and simulator connects them to supply while it is running.



what should i do with pin no 31 then?



in the lcd you should use a 10k pot between VCC, VSS and VEE for contrast control



here's how i connect a serial ADC0831, 8051,16X2 LCD in proteus :








Arun]]> Arun Kumar V<nura1002003@nospam.com> Thu, 10 Jul 2008 01:58:23 -0700 http://www.8051projects.net/forum-t10563.html Re: c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html Ajay<contact@nospam.com> Sat, 29 Nov 2008 00:32:58 -0800 http://www.8051projects.net/forum-t10563.html Re: c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html NOW I WANT TO WORK ON BLOODPRESSURE MNONITOR FOR that i have to use ADC0831.Isthis code is ok .nd i would like to get help so please help.]]> Afnan<afnan_decent@nospam.com> Fri, 28 Nov 2008 20:45:13 -0800 http://www.8051projects.net/forum-t10563.html Re: c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html Afnan<afnan_decent@nospam.com> Fri, 28 Nov 2008 20:51:22 -0800 http://www.8051projects.net/forum-t10563.html Re: c51 + adc0804 + lcd urgent help required http://www.8051projects.net/forum-t10563.html Afnan<afnan_decent@nospam.com> Sun, 30 Nov 2008 23:02:33 -0800 http://www.8051projects.net/forum-t10563.html