Sunday, July 29, 2012

Make: Electronics - Experiment 17 (Part 2)

This experiment from Make: Electronics is a follow up to Part 1, where we had 555 timer chips in both monostable and astable modes. This time, we have both 555 chips in astable modes for a similar circuit - first chip drives a LED (that keeps turning on and off) and the positive voltage going to the LED is connected to the control pin of the second chip, which drives the loudspeaker.

Take a look at the breadboard with both chips:

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