555 monostable mode, also called one shot, is when you trigger the 555 timer into giving a high signal for a limited period of time.

Afterwords, the 555 timer output stays low (the one/mono stable position) until you force it high again. The amount of time the output is high is set by a resistor and capacitor.

The link below just covers this diagram in a quicker format.

Brief 555 timer monostable one shot mode circuit

Diagram

YouTube video covering monostable mode/one shot 555 timer including light dependent resistor

Electronics course 12 555 timer monostable mode one shot LED how to by electronzap



Bonus video

555 timer light level switch with schmitt trigger hysteresis demonstration bonus video



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Kit that has everything you need to learn basic electronics and Arduino.





Assortment of commonly used integrated circuits (IC). I made a lot of videos with them.





Nice looking larger value capacitor kit.

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