If you're going to make a hobby out of electronics, buy an oscilloscope. It doesn't need to be fast. I use a dual-channel tektronix 100mhz scope that was built in the 80's. There are even PC based storage scopes now.

-Adam

On 11/18/2011 3:31 PM, Imbanon wrote:
Also, how do I check if my 555 is oscillating without an oscilloscope?

Thanks!


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