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--- halloween_blinking_creature_eyes [2018/09/05 13:24]
glassgiant created
+++ halloween_blinking_creature_eyes [2018/10/13 18:00] (current)
glassgiant
@@ Line 1: / Line 1: @@
-====== Halloween Blinking Creature Eyes ======
+====== Spooktacular Circuits: Halloween Blinking Creature Eyes ======
-We will use a 555 IC to simulate blinking eyes.  This is based on the circuit found in //Make// Oct 2006.
+We will use a 555 IC to simulate blinking eyes.  The 555 will allow the eyes to glow for a few seconds, then blink off for a fraction of a second.  Cut eyes out of a toilet paper tube, put the circuit inside, and hide them in the bushes for Halloween!
-{{:workshops:halloween_eyes:halloween_eyes.jpg?400|}}
+A description of the various pins on the 555 can be found [[http://www.learningaboutelectronics.com/Articles/555-timer-pinout.php|here]].
+To ease calculation of the period, frequency, and duty cycle of a 555 circuit, you can use an [[http://www.ohmslawcalculator.com/555-astable-calculator|online calculator]].
+You can see video of the spooky eyes in action [[https://youtu.be/WoKfBMZbv7Y|here]].
+{{ :workshops:halloween_eyes:2018-10-10_12.17.17.jpg?300|}}
+{{ :workshops:halloween_eyes:2018-10-10_12.15.49.jpg?300|}}
+{{ :workshops:halloween_eyes:555_circuit.jpg?600|}}

Halifax Makerspace Wiki