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 2008 Rickey's World contact@nospam.com (Ajay Bhargav) contact@nospam.com (Ajay Bhargav) Thu, 08 Jan 2009 22:51:21 -0800 Thu, 08 Jan 2009 22:51:21 -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 How measurement intensity light? http://www.8051projects.net/forum-t10715.html I have one question

How measurement intensity light?

I have LM339 , Cds cell and several resistors

I need converter intensity light Analog to Digital


regards
]]> Wed, 09 Jul 2008 01:50:59 -0700 http://www.8051projects.net/forum-t10715.html Re: How measurement intensity light? http://www.8051projects.net/forum-t10715.html
Second.. use any high resolution analog to digital converter to change the analog o/p of sensor to digital o/p and later calibrate it.]]> contact@nospam.com (Ajay Bhargav) Thu, 10 Jul 2008 08:16:07 -0700 http://www.8051projects.net/forum-t10715.html Re: How measurement intensity light? http://www.8051projects.net/forum-t10715.html
I get on ADC0804LCN



what are ports from 11 to 18, they are Digital?(take 1,0)

thank again



]]> contact@nospam.com (Ajay Bhargav) Sat, 12 Jul 2008 05:03:39 -0700 http://www.8051projects.net/forum-t10715.html Re: How measurement intensity light? http://www.8051projects.net/forum-t10715.html yes, the pins 11 to 18 of ADC0804 are indeed digital and are the parallel data lines of the ADC interface to the uC.Before u go any further with ur project, I would strongly suggest u go through the tutorial about ADC interfacing with uC on this site having link as below
http://www.8051projects.net/adc-interfacing/adc0804-interfacing.php
also refer to the ADC datasheet and i think a lot of ur doubts would be cleared.
Good luck.]]> contact@nospam.com (Ajay Bhargav) Sat, 12 Jul 2008 12:00:54 -0700 http://www.8051projects.net/forum-t10715.html Re: How measurement intensity light? http://www.8051projects.net/forum-t10715.html
Thanks for more information

I have question


I sorry for many question


What are Pin (1,2,3,5)?

i need more information, please!


]]> contact@nospam.com (Ajay Bhargav) Sat, 12 Jul 2008 12:38:58 -0700 http://www.8051projects.net/forum-t10715.html Re: How measurement intensity light? http://www.8051projects.net/forum-t10715.html
but not clear for my

thanks for help me]]> contact@nospam.com (Ajay Bhargav) Sat, 12 Jul 2008 22:30:20 -0700 http://www.8051projects.net/forum-t10715.html Re: How measurement intensity light? http://www.8051projects.net/forum-t10715.html
hi moon

i think pdi33 has already answered your queries here:

also refer to the ADC datasheet and i think a lot of ur doubts would be cleared.





Arun]]> contact@nospam.com (Ajay Bhargav) Sat, 12 Jul 2008 19:21:21 -0700 http://www.8051projects.net/forum-t10715.html Re: How measurement intensity light? http://www.8051projects.net/forum-t10715.html
Pin 2 is for read signal, making this pin low you can read the data latched on data pins of ADC.

Pin 3 is for write signal also called start of conversion signal. when we make this pin low, ADC starts conversion.

Pin 5 is INTR (interrupt) signal or end of conversion. its an o/p signal from ADC, when this pin is low it means conversion is over and we can read the data.

Please check datasheet for more details.]]> contact@nospam.com (Ajay Bhargav) Mon, 14 Jul 2008 08:49:11 -0700 http://www.8051projects.net/forum-t10715.html