Generate A PWM Signal using 555 Timer IC & A Potentiometer

In this video we’ll be generating a PWM signal using a 555 timer. I have a 555 timer here generating a square wave signal that I can control using a potentiometer to replicate a pulse width modulated signal. You can see as I change the value of this pot, the signal is changing from mostly off to mostly on and vice versa, and the led is getting brighter and dimmer. If you have no experience with the 555 timer, watch my last video, I went into a fair bit of detail of how it all works. This video will build off the back of that one.

Timestamps
0:00 Intro
1:00 What is PWM?
4:19 Basic 555 Timer Schematic
5:05 Output Voltage & Capacitor Voltage
8:30 Replacing R2
10:25 Potentiometer Explanation
16:15 Charging Paths
17:30 Schematic
21:05 Demonstration
23:45 Buzzer
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Hi, I'm Hamed, an Electrical & Electronics Engineering Student in Leeds, UK. At the time of recording this video I am approaching my third and final year at university.

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[educetheme]

Please note that the voltage stays at 6 volts, you are just changing the total power delivered to the load.

[maptuffs]

absolute masterclass, as someone who wants to take EE more seriously u have just demistifed alot of stuff my brain couldnt wrap my head around. Thanks alot bro, you had an answer for everything i was wondering why the pot was even there, but when you brought forward the microcontroller example and using that to lower the pwm it all made sense. Again thanks alot g

[_Maharshi.M.Gajjar]

Can I use normal diodes instead of using small signal schottky diodes?

[hmedato]

Any engineer is lazy.... It would be a problem if you aren't