Recent content by sri_ramtk

is there any way to check whether ne555 timer is working?i got a project in my coll about seismic sensor and this is the circuit diagram http://1.bp.blogspot.com/_a-VJV2rj-08/TE3BFy92lAI/AAAAAAAAAFs/8Ugz6gINKJw/s1600/Untitled.png. when i soldered everythin perfectly,and a supply is give to...