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 19:38:29 -0800 Thu, 08 Jan 2009 19:38:29 -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 [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html PCB diagram is not given,atleast give me the PCB layout.
The ratings of relay is not given.
The RELAY & HEATER configuration should be given in a better manner,so that we can understand it.
if we attach 8 sensors then the circuitry would certainly fail....
plz help me out ,about (RELAY RATING & PCB LAYOUT)]]> Fri, 07 Mar 2008 00:01:38 -0800 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html Similarly you could connect a room heater and a 12v relay with appropriate contact rating.
if we attach 8 sensors then the circuitry would certainly fail....

Can you explain.Is it because there are 8 sensors and only 4 relays?Only 4 sensors have associated control functions,I think.
It's setting the pot for Vref which is more of a problem since we don't know what Vref was chosen by the author,1.25 or 2.56 volts?
Calling Abbas...........]]> contact@nospam.com (Ajay Bhargav) Fri, 07 Mar 2008 20:13:36 -0800 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html
I am not disagreeing with the fact that PCB layouts are needed. The only thing is time.. we do not have enough time to make PCBs ]]> contact@nospam.com (Ajay Bhargav) Fri, 07 Mar 2008 21:43:49 -0800 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html cool down bro..

Kanji, Projects on websites are generally for your reference and to provide you ideas. You can download them and make them as they are.. or can modify them as per your requirements.

Do not take anything to heart stay cool! ]]> contact@nospam.com (Ajay Bhargav) Sun, 09 Mar 2008 07:40:03 -0700 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html Kanjibhai wrote ...

The circuit is not self explanatory,more information should be attached.
PCB diagram is not given,atleast give me the PCB layout.
The ratings of relay is not given.
The RELAY & HEATER configuration should be given in a better manner,so that we can understand it.
if we attach 8 sensors then the circuitry would certainly fail....
plz help me out ,about (RELAY RATING & PCB LAYOUT)


you can use any switching device according to your requirement..
and how the circuitry fail with 8 sensors??? can you explain it??????

the purpose of sharing the project was not to provide you spoon feeding...but to give you some idea,some help..so that you can take it as reference and make something better by your own instead of just copying everything and crying for PCB layout and relay rating..
]]> contact@nospam.com (Ajay Bhargav) Sat, 08 Mar 2008 23:19:49 -0800 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html . The more i understand the vb part the more i appreciate his coding skills. i am trying to use it and develop a new related interface. But it may take a bit of time as i have basic knowledge of VC++ but zero knowledge of vb. Sothanks for inspiring me and providing me the skeleton application abbas, hats off to u ]]> contact@nospam.com (Ajay Bhargav) Tue, 01 Apr 2008 10:32:39 -0700 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html
in the 8051 part:
1)Increase reesolution of adc to 14 bit (using 7135)
2) change sensor input to pt-100 or thermocouple.

in the PC end:
1) fetch records stored in database from the frontend according to user criteria and create a report for printing.

I have knowhow of the 8051 part but is my required changes at the PC end, the VB end possible?
Please confirm (especially the printing part) .Will it be more complicated for a VB novice like me? thanks once again ]]> contact@nospam.com (Ajay Bhargav) Tue, 01 Apr 2008 10:45:08 -0700 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html
I never thought i will make that PC remote project so good looking and with such features like com port selection and all still i made it.. you just start doing it.. you will surely reach your destination]]> contact@nospam.com (Ajay Bhargav) Tue, 01 Apr 2008 10:42:13 -0700 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html
coz this thread is no where related to your suggestions..]]> contact@nospam.com (Ajay Bhargav) Tue, 01 Apr 2008 10:50:57 -0700 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html contact@nospam.com (Ajay Bhargav) Tue, 01 Apr 2008 10:55:28 -0700 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html ]]> contact@nospam.com (Ajay Bhargav) Wed, 02 Apr 2008 02:26:31 -0700 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html
i hate windows!!!

these are personal comments ... but the truth is we cant do without them (microsoft products )]]> contact@nospam.com (Ajay Bhargav) Wed, 02 Apr 2008 03:37:44 -0700 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html
java is one more thing you can use little difficult but you'll get used to of it once you use it.
Best thing about java is.. its platform independent ]]> contact@nospam.com (Ajay Bhargav) Wed, 02 Apr 2008 07:24:49 -0700 http://www.8051projects.net/forum-t6672.html Re: [poll] DAQ SYSTEM http://www.8051projects.net/forum-t6672.html it was the first programming language which i learnt]]> contact@nospam.com (Ajay Bhargav) Wed, 02 Apr 2008 09:48:53 -0700 http://www.8051projects.net/forum-t6672.html