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The second momentary switch works the same way, but is connected to a DPDT-relay. When metal is touching metal the polarity gets reversed which changes the direction of the attached motors. | The second momentary switch works the same way, but is connected to a DPDT-relay. When metal is touching metal the polarity gets reversed which changes the direction of the attached motors. | ||
== Assignment 3: | == Assignment 3: Final asiignment/ Morgenflöte== | ||
'''555 timers, photocells , | '''555 timers, photocells, capactors, resistors, speaker, cardboard tubes''' | ||