555 Adjustable Delay On Off Timer Circuit

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The 555 timer IC is an integrated circuit (IC) that is used in a variety of timer, delay, pulse generator and oscillator circuits. In this tutorial, I am going to show you guys how to make an "Adjustable Delay Timer Circuit" using the 555 timer IC. This circuit can automatically turn on/off any circuit after a fixed duration. This timer circuit is useful when you need to power On/Off any AC Appliances after a pre-defined duration. For example, you can use this circuit to automatically turn off a mobile charger after a certain period of time to avoid over charging, or you can turn on/off a light bulb after a certain period.

The time delay of this circuit can be adjusted by using various combinations of resistors and capacitors. Watch this video for detailed step by step instructions on how to build this circuit and to know how this circuit works.

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Video: https://youtu.be/AB8XjBGvlPY Full Blog Post: DIY - Relay Module: https://youtu.be/3n69b4sdDjk

Schema: Circuit: Gerber Files:

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