i recently bought mk139 nd built it …nd i am using a 12 ac-dc adapter and a 3A battery … but my circuit is still not working … i also dont know which battery to use…(im also using a 6v bulb) …plzz help me out ?
You will need to supply more detailed information in order to get some usefull hints.
anyways i have solved the battery problem … now the problem is that the ‘Clap LED’ turns on when i give the input . i have checked all the connections but still my clap doesn’t seem to have an effect on the LED . i also don’t know how to connect the mic and also the LM324n IC …please help me out … i have been working on this kit for almost one mont but unfortunately still i cant make it work … 
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thank you in advance for your help 
If you can supply links to HI-RES and SHARP pics of your assembly (both component and solderside), we can take a look and see if we can spot a problem.