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 2009-01-08T10:02:50-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t12000.html 2009-01-08T10:02:50-08:00 Hi,I have a question regarding the DAQ project in http://www.8051projects.net/downloads196.html.In the included schematic, there are only four LM35. if i want to add 4 more LM35, i just need to connect them on pin 2,3,4,5 on the ADC0808 right?For 8 relay connection, where do i need to connect the pin 5,6,7,8 from the ULN2803?Do i need to change the c-code because i can only see setting for four relays in it ?Thanx for your help. http://www.8051projects.net/forum-t12000.html 2009-01-08T10:02:50-08:00 Ajay yes, you need to add on/off functionality for each new relay you are going to add.Now, not only in the controller code, but you also need to check if the software support more relays, if not then you need to add few lines of code to support that too.