Just an experimental dub siren that I've built out of curiosity. It uses two LM555 timers and one LM741 op-amp. It was based on a project that I saw on the internet. However I had to simplify it, so I could easily operate it using one hand while holding the camera with the other.

Please refer to the link below too see the original project:
jacoblysgaard.com/2009/08/dyi-dub-siren-%E2%80%93-the-complete-rubdown/

Created: February 18, 2010

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