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flashing_led_railroad_crossing_lights_with_a_555_timer_chip

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Flashing LED Railroad Crossing Lights with a 555 timer chip

Wikipedia article about the 555 timer IC

  • 1k Ohm ($0.02 - $0.09)
  • 2.2k Ohm ($0.02 - $0.09)
  • 3.3k Ohm ($0.02 - $0.09)
  • 4.7k Ohm ($0.02 - $0.09)
  • 10k Ohm (3 x $0.02 - $0.09)
  • 10nF [103] ($0.02 - $0.10)
  • 100uF ($0.05 - $0.15)
  • 1000uF ($0.18 - $0.33)
  • 555 timer IC ($0.13 - $0.25)
  • Red LED (2 x $0.03 - $0.14)

Total cost for one: $2.18

Cost per unit for 50 bulk: $0.58

Modes

  1. Astable
  2. Monostable
  3. Bistable (schmitt trigger)
Astable

Monostable

flashing_led_railroad_crossing_lights_with_a_555_timer_chip.1503197309.txt.gz · Last modified: 2017/08/20 02:48 by adam