How To Make a PWM DC Motor Speed Controller using the 555 Timer IC

[@alterguy4327]

The day I started my Engineering , I looked up your channel,learnt more than college can teach me. Today after 4 years your channel is still the best

[@americanengineering2063]

hmmm buuut wat is value of C1?

[@mafulynch]

@@americanengineering2063 you can use a lot of values, it depends on the frequency you wan't as output.

[@ishigamiyu1991]

@@americanengineering2063 😂😂

[@ELECTRONOOBS]

KZbin fella here. Very nice explination. I was just preparing the same tutorial on 555 timer for power control. LOL. Keep up, very nice channel!

[@hannnnn310]

You guys are the best!

[@michaelzajac5284]

Dear How To Mechatronics, Fortunately, I finally have to find it. I'm glad you help me how to make a PWM Dc Motor Speed. I was tired looking for how motor speed controller, but I forget name it. Thank you for show me.

[@ΜιλτιάδηςΠαντελαίος]

The better channel for Mecatronics, thank you !!!

[@scotttaggart]

Such an excellent job on this video. You are so talented to explain so much in so little time and words. Thank you very much!

[@Obamjur]

Mr. you make mechatronics seems so simple and easy to use. I'm big fan of your work and thank you for sharing this!

[@knowall5792]

Excellent. Presentation can't be better than this. Already a subscriber.

[@p.g.pg38]

Hi, I am a beginner and I work on Arduino from your website and videos for a few days. It's absolutely great! Thank you very much for all this sharing work. It is a pleasure to work with elements of such quality. The website is an essential complement for whom English is not the native language ...because, miraculously, the Google translation (in French for me) is almost perfect ;-)). Thanks again!

[@ch.minamotohidarii8338]

Really helpful, thank you ❤

[@tanvirnewton2341]

Simply you are the best .Your explanation is wonderful ...Keep posting .. Respect +++++++

[@HowToMechatronics]

Thanks!

[@miteshkumar5557]

That setup with the diodes is genius.

[@sarasaicouc7272]

Sorry can u explain me why he used the diodes i couldn't understand

[@Epsicronics]

@@sarasaicouc7272 this might be late, but they used 2 diodes to control which side of the potentiometer discharges the capacitor and which charges it, in the case of the video the right side was for discharge, without them the capacitor would always discharge through the lowest resistance side, with the diodes in place the capacitor can only discharge through the right side, even if the resistance is bigger

[@shubhamshukla167]

nice sir , i am your big fan👍 i am watching you from about 3 years

[@tahirbintariq8934]

Sir thats a good video ... And I also watched previous 555 timer video I'm very thankful to u

[@bearshield7138]

Thank you this is helpful

[@matthewberry201]

Brilliant, explained so well, thanks

[@hhKJgf1M8a0rzt8hP]

Excellent tutorial, thank you

[@paulmacgiollacaoine8619]

Very nice format :)

[@LordsServant4ever]

Excellent video sir.

[@germas369]

This is great, very informative video. Thank you

[@HowToMechatronics]

Thanks!

[@shvideo1]

What a great instructional and useful video. So very well explained. Thank you also for the schematic and all the parts on the linked info. page.

[@shafiqrezal2855]

where is the part list?

[@americanengineering2063]

what is c1 value? what frequency is the output? good video!

[@espenkristoffersen4887]

It depends on what frequency you want. You need a little bit of math as well.

[@prasenjitgautam]

Awesome as always Dejan 👌 your stuffs are awesome because of explanation :)

[@aasid2446]

First

[@pikepunk1]

Great video for practical use of astable mode on the 555. I also use JLCPCB for prototyping, and the boards have been great.

[@revb0]

Excellent and informative video.

[@williamnicklaus2203]

Good day - great video and instruction. Trying to learn how to make a PWM DC motor speed controller using something like this for an abandoned Treadmill Motor. Most of these "Large" motors need more voltages I think. Clearly you can tell I am NOT well versed in electrical circuits. Any help is greatly appreciated.

[@waltervaldivia2399]

Beautiful, it works to perfection! Please that future projects I would like you to give us an option where the tracks are on one side of the PCBs to facilitate manufacturing by the ironing method. Thank you

[@mejriawni8480]

hi, you can manufacturing by the ironing method in the double side as you do it in the single side

[@qaisurrehman7106]

Very amazing video 😍😍 i just want to know what value of capacitance is better for the 12 volt controller application

[@ofsanjay]

very educated video all videos content strike to brain with good detail.

[@mikelemon5109]

Hi cool circuit thought about making a PCB like this along time ago. Could you maybe test the quality of the PWM signal in term of what is the lowest DC percentage as well as the highest with the scope maybe?

[@alihho]

hi , can you write a complete list for the components you used. thanks .

[@HowToMechatronics]

Hey, I've updated the article post, you can find the components list there. Cheers

[@alihho]

thank you so much

[@John_Smile]

Could you build the same circuit, but for a voltage of 36 V? (Knowing that 555 only works up to 15 V.)

[@biggusmaximus1651]

Do you need another small resister above the C1 capacitor, to prevent high current from C1 into 555

[@atouguiafrancisco6704]

great video, thank you

[@56agehenri]

Hello. Is it possible to run forward and reverse on this? Working on film project and needs possibillity to run both ways.

[@dynxt-_-3243]

No, but in order to reverse the polarity of the motor or to change the way the motor spins you'll need a h-bridge, there are plenty of videos that explain and show how they work so just look up "h-bridge" on youtube and alot of videos will come up. I hope i was of some help =)

[@golamkabir7510]

Which software used for pcb?

[@wisdom_wellness365]

Excellent.

[@spirosekulovski8643]

Great tutorial! Can you make a tutorial for a SVPWM three phase AC motor controller? :D

[@jdmoo]

Can you use these for controlling speed of a solenoid as well?

[@rgbcrafts]

Is there any problem changing the potenciometer to a trimpot/smaller one in this case?

[@HowToMechatronics]

That would be no problem at all.

[@jamesrenwick3244]

Can you replace with a multi-turn potentiometer to get a more precise rotation ( down to 10rpm or even 2rpm ) ? Some pots also have 5 pins ( the one you use and the multi-turn pots only have 3 ). What are the extra 2 pins for ? I have a pre-assembled module, but with my poor eyesight, the unit being so small and components covering the circuit tracks, I can't see what pins join what components ( I'm thinking of just removing the 5 pin pot on this module and replacing with a multi-turn pot, but obviously I only have three pins to attach ).

[@muhammadbilalkhan1450]

Great video. What software did you use to make animation of pwm hopping. Thanks

[@VahidBehravanVahid-Behravan]

HI There, Very good explanation and testing, thanx! can every PWM be set as positive offset frequency?

[@pleasecho2]

What is the value of C1?

[@jacktheripper1083]

according to his website, c1=c2=100nf

[@michalkotulak4948]

Hi guy Can you recommend some timer which will run dc motor in setted time? Thank you

[@isanrodrigueztrimino6701]

What value did he use for C1?

[@TheTeeranova]

can use for pwm vapor vape?

[@tomknud]

What would be neat would be to make two of those, hooking one potentiometer directly up to the motor, setting the other aside. Then subtract their pwm's and feed the result into the motor, thereby facilitating motor angle election.

[@dilkashgungabir5607]

Can I use this on a welding machine that has a 200A 78V output, if yes can I set a min voltage instead of it dropping to zero

[@vishalgaurav4411]

Can we use resistance to reduce the voltage ?

[@driesmaes6785]

What kind of resistors you use in your arduino secureti and alarm system project

[@emenikehmaduka3370]

Can I use it to control any other DC motor?

[@jeremiahogbonnaya7492]

God bless you 🙏

[@fedorkravtsov9320]

Thanks.

[@sokaryali7358]

Can i use LM317 instead of IRF ?

[@sgeorgeBJ]

Why you added the diodes?I am not sure about the reason

[@solybr2271]

I loved it.

[@darshananvekar5389]

Which frequency is better?

[@renyhidam681]

Why is the battery not recharging the Capacitor during the discharge phase?

[@sffahim3977]

Can i use 6v supply?

[@s.mitrarohtak5800]

Can you give me a link for the eagle software you are using

[@nardaoeletronica]

Very good.

[@palakodetyvenkataramasharm2194]

Can we run AC 1pH motor?

[@paulmacgiollacaoine8619]

Love this :)

[@arunpaul661]

nice video....very informative.....

[@random2059]

Please tell me what should be the supply adaptor rating which i want to connect to the circuit ...........if i want to regulate 3 ,12 v 500mA dc fan..... please reply...??🙁

[@kardeef33317]

Whats the purpose of D1 and D2 , just for the .6V drop? Iam still learning and since both diodes face opposite directions all I see them doing is making the voltage no matter which way have to overcome the .6V to get passed either direction, what iam I missing. Great vid and thanks.

[@mamun088]

thank you so much for the explanation :D

[@disguisedcat1750]

I don't understand it either, but I thought they are there to force which side the capacitor discharges through and which side it charges through... in case they weren't there, the total resistance will not be constant and therefore the frequency will change as you move the potentiometer, because the current will flow through the less resistant side.. idk if this makes sense :p

[@disguisedcat1750]

That would also mean you are only using half the petentiometer cuz the other half is the same as the first one but reversed. So highest resistance when potentiometer is at 50k and lowest on both 100k and 1k.

[@mangeshdevikar7]

Sir i need 10 khz frequency pwm output But i am not getting proper output I am taking rated(calculated) components which is required

[@alvilsoof]

Hi, if you can please help me from where should I start, I have a project to save numbers entered manually on SD card and represent them with Arduino

[@Abdelhamid_Helal]

you added a diode on parallel with the motor to prevent the current . I can't understand this can you explain it in detail or make a vedio ?

[@rodgrondein8207]

Well done Dejan ... flawless presentation. You are truly a great engineer and a gifted teacher. I would really like to know what software you use for your presentations. Just so easy to follow you !! Life is just too short to re-invent the wheel, so thanks so much for sharing your knowledge, and experience ... you are a real blessing to all of us out there. :-)

[@davoodseify3624]

nice works and information thank you

[@HowToMechatronics]

Thank you!

[@Mikey-oz2sp]

Does potentiometer size matter in a pwm circuit?

[@HowToMechatronics]

In this particular circuit it does matter as explained.

[@theGraphicAutist]

is it important what freq to be at for driving a motor? u never said a value for c1

[@reizanandaermawan9039]

what is the specification of this pwm?

[@shashank_1180]

Can this circuit used in electric bicycle?? Can control 24v 250w motor??

[@Introvertworlds]

the mosfet has rating of 5amp u cant run more then 5amp load

[@disguisedcat1750]

The 555 timer chip featured on the website is rated for 5-15 Volts so you should pick another suitable one as well as a suitable transistor.

[@jedandecko5585]

Hi Dejan. I like your channel, its nice and simple for beginners. Can you make driver board for 1.7 MHz ceramic plates for water vaporizer, they are pretty cheap online but without driver. It can be done with 555 timer and Bu 406 NPN, the only problem for me is that I dont have osciloscop (its hobby). Keep up the good work. Cy

[@iloveAIFORGOOD]

How to connect 555 Timer IC with PC and what IDE do you use?

[@Epsicronics]

The 555 timer requires no programming

[@arielrizu]

need info for MAX Ampere and Volts ? What Min - Max Volts and max out ampere

[@KrissosMS]

that depands of the transistor type

[@Epsicronics]

Without a transistor the chip can only output around 200 mA, you will need a transistor for anything more

[@MrDhilishkumar]

i need to buy PWM for hydrogen production. I need to buy PWM for hydrogen production. Hydrogen unit need 220volt 2500watt. I have 220volt inverter. Which bridge rectifier and capacitor should I use to convert ac to dc how to connect capacitor. Which PWM should I selected

[@Havjaa]

More motor videos pls

[@bobl78]

what is the purpose of the diode at the motor ?

[@disguisedcat1750]

When motors stop or start they generate voltage spikes in the opposing direction of their power source, so this diode shorts these spikes to their generator so that they wouldn't harm other components.

[@MUHAMMADYAWARIFRAHEEM]

Nice videooo brooooo

[@strawhatluffy5779]

if we can control speed of motor by controling the input voltage then why we use pwm circuit for controlling its speed?

[@disguisedcat1750]

You can use a transistor and a potentiometer alone to control voltage input but it is inefficient and the motor will stop turning when the voltage input drops below its startup voltage. For example: a motor that needs a startup voltage of 5 volts will speed up when given higher than 5 volts without pwm, but will stop and start heating up when the voltage drops below 5. While in pwm the same motor will slow down when given a mean voltage of say 3 volts because its taking its startup voltage in pulses. pwm is the best way to control speed of motors in terms of efficiency cuz you are always able to give the motor the voltage its most efficient at while still controlling its speed.

[@littleraptor9898]

i dont know if you answer comments, but, i have a question: so, iam running this 12V 20A network back in my garage. i want to use a DIY dremel with a 10A PWM controller, with a motor that pulls 5A no load. the question is, how much amps will the PWM pull? will it take the 10A, the 5A that the motor pulls, or will it try to take the full 20A and fry itself? please help

[@disguisedcat1750]

The 555 timer can only route 200mA through it, but because we are using a transistor the current will not be flowing through it, instead it will flow through the transistor. So you would just need a 20A transistor or a lower value suitable for your motor usage. your motor would probably fry TIP122 which is featured in this video cuz its rated for 5 amps and your motor pulls 5 at no load.

[@littleraptor9898]

@@disguisedcat1750 ahem, a motor cant overamp itself (that is not even word lol, but you get what i mean) because a motor pulls only how much it wants, not EVERYTHING available. you probably meant that the motor could overload the PWM because it will draw more than 5A when loaded, but a motor CANT pull everything you throw at it. 5A no load, it will take those 5A and not the full 20 when on no load.

[@disguisedcat1750]

@@littleraptor9898 i guess I am bad at explaining but that is what I meant. I said 20 amp transistor cuz their prices are pretty close so might as well get one that won't fry even if you change the motor later. I said "or a lower rated one according to your motor usage" which explained what you said cuz you cant specify 5 amps at no load cuz there is no way you have a free spinning motor :)

[@littleraptor9898]

@@disguisedcat1750 ooh i get it now! ok, that is what i needed, thanks

[@random2059]

What should be the dc adaptor rating if i want to use dc adaptor instead of battery ... please tell me...???????????☹️

[@disguisedcat1750]

Measure amp consumption of your specific motor and what you use it for.

[@al-aminshuvo3170]

What is the MOSFET name?

[@allenjoshua7692]

anyone else noticed that his voice cracked on 1:40 ? hahhaha "resisters on the r1 and r2.. on the other HAAAND.."

[@disguisedcat1750]

How can you miss it dude

[@TutorG4mer]

I just made this circuit in a perf-board (due to the lack of a breadboard) and it didn't work. After some probing around to check for connections I accidentally grounded the cathode of the diode that points away from the the Potentiometer and then the circuit started working as it was supposed to. The only difference between the circuit that was shown and the one I made are the Diodes used (1N5408 and 2x 1N4004, all from old fluorescent light drivers) and the TIP122 transistor being replaced with an MOSFET FQP30N06. Anyone have any ideas on why is that?

[@disguisedcat1750]

Make sure you hook the base of the mosfet to like a 1Mohm resistor to ground to prevent noise and try again. I am using the same TIP122 transistor and it didn't work for me either.. imma try grounding that and see if it works... im so mad at this stupid circuit

[@waltervaldivia2399]

Thank you very much for sharing this perfectly elaborated video of this useful project. You have earned a new subscriber. Could you just pass me the png files just to paste and print please.

[@kreatifteknik3179]

Master.....how to make max 100 A 12 volt PWM DC MOTOR?

[@Epsicronics]

If you're using his circuit you just need an output transistor capable of that, don't quote me on it but I believe the irf3205 can handle it with a heatsink

[@kreatifteknik3179]

Tq master. .. very interesting wiith your project 👍

[@justtestingonce]

Why is the motor moving so slow as you increase the potentiometer ? Not enough power?

[@HowToMechatronics]

That's the maximum speed of the motor. You can notice it has a reducer in front of the motor. The max RPM of the motor in the example is 120,

[@disguisedcat1750]

Its a high torque motor

[@pragathipakadi4504]

Cost?

[@shivchandran763]

I used this circuit but this is not working for me

[@hareeshbalu9286]

How to make pwm led dimmer ?

[@JTTigas]

exactly the same, maybe with higher frequency if needed

[@mikiii0416]

LM317 chip ... 1k resistor ... 10k potentiometer ... and done .. so easy

[@MrNoipe]

LM 317 is a transistor, it doesn't generate PWM signals.

[@theGraphicAutist]

lm317 is a voltage regulator

[@disguisedcat1750]

But its inefficient.

[@vishalgaurav4411]

Can anyone give Gerber files ?

[@ptptp7826]

why can't we just use variable resistor?

[@xaenon]

Variable resistors are a simple option for very low power designs. But when handling larger amounts of power, variable resistors are impractical because they need to be physically quite large, and they waste a lot of power as heat. Imagine designing a circuit that controls a 12 volt, 10 ampere DC motor. A typical 1/4 watt variable resistor would be almost instantly destroyed trying to handle that kind of power. A variable resistor for something like that would have to be very large and expensive, and it would have to dissipate a lot of heat. PWM circuits are more efficient for an application like that, because they don't waste as much power.

[@cavenagy]

Why do you need the IC? Why cant you just control the voltage going to the motor with just the potentiometer.

[@Tegelane5]

This way it doesnt waste electricity. Transistors heatsink can also be smaller.

[@disguisedcat1750]

Just the potentiometer would fry your motor, you can use a potentiometer and a transistor for voltage regulation but pwm is much more efficient like the guy above me said.

[@TheJavaSync]

Add direction controller, pls :)

[@ikruamahamed8342]

I can it empty pcb