How to make breath alcohol meter.

[vinit chaudhari]

Hi,
I am trying to design breath alcohol meter with data logging and printer.I have Hot wire sensor MR513(winson make), sensor signal amplifier ckt is ready.
Need rest ckt ideas i.e. sutaible ADC, uC, memory ic(which can store 1000 readings) & how to interface printer with uC.
Can any one help me.

 

[dknguyen]

Just use a microcontroller with an internal ADC and enough internal memory to store 1000 readings. It would be much easier than choosing using an external ADC and memory. Some examples are PICs or AVR.

What do you mean interface with a printer?

 

[vinit chaudhari]

Hi dknguyen,
Thanksss... for early reply and suggestion.
I'll find nos of these ic. if u have nos of these ic, kindly suggest.
Data which was log, if require in print form then where to interface/connect the printer.
May the term interface is wrong for this purpose.

 

[dknguyen]

It doesn't matter which microcontroller you use. Just go onto the Atmel or Microchip website and pick one. ALmost any one will work. The one you can get is the best one. I recommend one of the newer microcontrollers from Microchip like the PIC18 or dsPIC30F.

WHen you say printer, do you mean print to a piece of paper? Or print to the computer screen?

 

[vinit chaudhari]

Thanks again!!!
To print the logged data on a piece of paper !
Want to use samsung mini thermal printer model no.SMP610.