please help me in my project pic16f877a

[modi_81]

Myproject is carbon monoxide detector control by pic16f877a which connect the pic with the following elements:
1- co sensor(like potinometers)
2- venting fan (220v)
3- buzzer 12v
4- 3 leds green yellow red as co consntration
5- LCD 16x2 backlight
and if u have any information about co detector connection to pic16f877a
:idea:

 

[uludere72]

I didn't study wtih any kind of CO sensor . If it behaive like potentiometer ( changing voltage according to CO changes) you can use AD inputs..

 

[IanP]

Take a look at the NAP-78A CO sensor .. see pictures below ..

**broken link removed**

The Nemoto's CO gas sensor features;

The detectable gas concentration range is 0 - 3,000 ppm, and because of the excellent linearity shown in the Figure 1, accurate detection is possible.

Its output is voltage, so it can be easily interfaced to a PIC microcontroller with A/D ..

Regards,
IanP

 

[linoko]

Hi modi_81,
When i browse thru the WEB i found this project that may be will be helpful to you
**broken link removed**

Enjoy
Linoko