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555 Timer Project | Flashing LED Headband - The Learning Circuit

555 timers are one of the most popular and versatile ICs on the market. In the previous lesson, we learned how 555 timers get used in circuits. There are three main types of circuits in which they are used, monostable, bistable, and astable. Astable circuits are likely the most common use for 555 timers. In this episode, Karen shows how to create an astable circuit using a 555 timer. Follow along as she uses resistors and capacitors to create an RC circuit to affect the timing of the circuit. Karen’s final circuit uses a 4-position DIP switch to allow for the use of 4 different resistors and therefore 4 speeds to control the flashing of LEDs. While Karen uses this circuit to create flashing lights on a headband and a hat, the uses are endless. Try your hand at making the circuit and use it to make art, on decorations, or create warning lights. Come up with other ideas for how to use this circuit and post them in the comments below! http://bit.ly/2SOLFI0 Engage with the element14 presents team on the element14 Community - suggest builds, find project files and behind the scenes video: http://bit.ly/2MFMG0v Visit the element14 Community for more great activities and free hardware: Tech spotlights: http://bit.ly/2KLz0TS Roadtest and Reviews: http://bit.ly/2KH4fj3 Project14: http://bit.ly/2wPnajx