hi...
i plan to do a project where i want to run an experimental setup through a microcontroller .basically i want to control the driving circuitry which drives the experimental setup . the driving cicuitry consists of relays i guess ..which should be activated upon receiving a signal .now what i plan to do is to perform a rpogrammable gain amplifier setup .. in which i want the user to give the voltage and switch as input .. now the analog voltage which thew user has providede has to be converted into a digital value and suppose there are 4 switches then 4 digital outputs will be activated and accordingly given to the 4 relays like ... 1000 then realy 1 will be activated and the voltage will go via switch 1 ... i am unable to find the A/d converter programme and how to communicate serially ... i need smaple programmes those already mentioned iam finding it difficult to make sense out of it .. please reply soon