I have shared schematic and builds of few of my STM330 based sensors in my Previous post ... Today I will be sharing build of my STM330 Based Smoke and LPG Gas Leakage sensor.....
Here are few pics of my STM330 Based Smoke and LPG leakage sensor..
I am using nokia 5V 500mA charger as power supply for LPG and Smoke sensor..
50K pot is used for set threshold for smoke and LPG leakage sensor. This module is directly plug in to wall socket in kitchen or any where else in Home to detect Smoke and LPG leakage. I am using WAKE0 of STM330 to interface Smoke sensor output which is compared to threshold and converted in to Digital by Maxim MAX9117 comperator. As I am using WAKE0 interrupt of STM330... It will just send telegram when Smoke or LPG leakage accurs without any delay. .
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