How To Create A PWM Signal Using The Arduino Uno - For Beginners

In this video we’ll be creating a PWM signal from an Arduino using some simple code.
Elegoo UNO: amzn.to/3qRV2sH
Arduino IDE: www.arduino.cc/en/software
All Code
Simple Program Changing Duty Cycle: github.com/hadefuwa/my-arduin...
Creating Custom Duty Cycles: github.com/hadefuwa/my-arduin...
Incrementing Duty Cycle: github.com/hadefuwa/my-arduin...
Decrementing Duty Cycle: github.com/hadefuwa/my-arduin...
Control From PC: github.com/hadefuwa/my-arduin...
Timestamps
0:00 Intro
1:00 PWM Pins
1:45 Simple Program Changing Duty Cycle
4:35 Creating Custom Duty Cycles
7:55 Incrementing Duty Cycle
10:10 Decrementing Duty Cycle
11:20 Lights Out
11:50 Control From PC (Serial Monitor)
_____________
Hi, I'm Hamed, an Electrical & Electronics Engineering Student in Leeds, UK. At the time of recording this video I am half way through my third and final year at university.
Visit my website at www.hamed.engineer
If you have any questions you can email me at [e-mail] or just comment below.
Stuff You May Have Seen In My Videos
The Oscilloscope I Use (From Banggood): www.banggood.com/custlink/vvD...
Alternative Oscilloscope £220: amzn.to/32JhxXx
Elegoo Arduino Most Complete Kit £50: amzn.to/3EKfdMZ
Elegoo Arduino Basic Kit £15: amzn.to/3mSEpL4
Soldering Iron Station £28: amzn.to/3eONT5y
Handheld Oscilloscope £50: amzn.to/3HvJRvy
Handheld Oscilloscope £100: amzn.to/3ENljMG
DIY Function Generator £9.99: amzn.to/3JCQrCg
Lavolta Power Supply £60: amzn.to/3mMvwmb
Eventek Power Supply £60: amzn.to/3HxP9q3
Elegoo Breadboard Accessories £15: amzn.to/3JD55Jy
You Can Also Find The Above For Cheaper On Banggood/Aliexpress

[@moaisl.3357]

0.7 volt is the voltage drop across output transistor. That is why you do not have 5v at output.

[@nigelsheridan6229]

Thanks Hamed for the video

[@aftalavera]

Thanks for sharing!

[@crazysvt03]

Hey if you wanted to use this to control a 3 port mac valve with a input being an interrupt signal that drops duty cycle to zero would you be doing similar code

[@DaveFer]

Hey, thanks, my friend. So just by doing an analogWrite(i) to a digital PWM pin ... it converts it to PWM? Neato! :)

[@HamedAdefuwa]

All Code
Simple Program Changing Duty Cycle: github.com/hadefuwa/my-arduino-projects/blob/main/Simple%20Program%20Changing%20Duty%20Cycle
Creating Custom Duty Cycles: github.com/hadefuwa/my-arduino-projects/blob/main/Creating%20Custom%20Duty%20Cycles
Incrementing Duty Cycle: github.com/hadefuwa/my-arduino-projects/blob/main/Incrementing%20Duty%20Cycle
Decrementing Duty Cycle: github.com/hadefuwa/my-arduino-projects/blob/main/Decrementing%20Duty%20Cycle
Control From PC: github.com/hadefuwa/my-arduino-projects/blob/main/Control%20Arduino%20From%20PC

[@garavel28]

Hello Sir, can I ask you a question via email about the MPPT algorithm that I am trying to make using Arduino Mega 2560?

[@nibzlegend99]

I want to be able to change pwm with input using a switch , when it goes high , duty cycle becomes 50%. How can I do that?

[@0124akash]

Sir, can i get two different frequencies at the same time from single Arduino UNO board ?
20Khz and 50Hz square wave.

[@markdaniel8740]

You can use millis() or micros().
unsigned long twentykhz =0;
unsigned long fiftyhz=0;
int twentysig= HIGH;
int fiftysig= HIGH;
void setup()
{
pinMode(3,OUTPUT);
pinMode(9,OUTPUT);
}
void loop()
if (twentykhz< micros()) // checks if current time has passed time to toggle
{
twentysig==!twentysig; // toggles output value
twentykhz = micros ()+25; // set next toggle time 25 microseconds into future
digitalWrite (3,twentysig);
}
This will make output high for 25 microseconds then off for 25. 20khz = 50 microseconds/ cycle.
if (fiftyhz< micros())
{
fiftysig==!fiftysig;
fiftyhz=micros()+20000; millis()+20 can also be used
digitalWrite(9,fiftysig);
}

[@mahmoudsamy1992]

Is there any way to make the PWM is shifted ??:
I need to make 2 PWM with variable duty cycle which are controlled by means of potentiometer, The PWM frequency should be 30 khz. I have done all of that but I can't do it with the following challenge. I need those 2 PWM to be shifted from each other half cycle. And running simultaneously with each other. This is my code:
#define PWM_1 9
#define PWM_2 10
#define POT A0
void setup() {
TCCR1B = TCCR1B & B11111000 | B00000001;
pinMode(PWM_1, OUTPUT);
pinMode(PWM_2, OUTPUT);
pinMode(POT, INPUT);
}
void loop() {
long dutyCycle = map(analogRead(POT), 0, 1023, 0, 255);
analogWrite(PWM_1, dutyCycle);
analogWrite(PWM_2, dutyCycle);
}
I am using Arduino nano ATmega328
As you see, and when I run it on an oscilloscope simulation,

[@mickadams4471]

Hi Hamed, hope everything is OK. Haven’t seen a video for a while mate.

[@HamedAdefuwa]

❤️ appreciate the concern Mick. I'm very well thanks just beyond overwhelmed with university work. 2 months left 😮‍💨. I'm hoping to get the boring writing and technical stuff out the way and then start documenting me creating the solar charge controller. Too much to do, to little time sadly. I hope you're well?

[@mickadams4471]

Ah, good to hear from you mate. Not easy juggling uni with family. As long as you’re OK. I know how you feel, I haven’t touched a circuit or scope for a couple of months due to work.