Ebay 3 channel PWM Module

Ғылым және технология

Taking a look at a very inexpensive (4$ CAD) PWM module. This board has three separate channels and a very nice LCD.
PWM stands for pulse width modulation, which is basically controlling voltage going to a device by chopping up a set voltage. the higher the on-time (PWM%) the more average voltage will be sent to the device.
This module is useful for speed controlling motors, dimming LEDs and a host of other things!
Thanks for watching!
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Пікірлер: 47

  • @AnotherMaker
    @AnotherMaker4 жыл бұрын

    I need this. Great video!

  • @UnknownUser-fh3dp
    @UnknownUser-fh3dp4 жыл бұрын

    No your videos are very good and do not need music all the good channels do not use music and you are in the with them,there is enough music on here ... keep up the good work

  • @Sobakin76
    @Sobakin762 жыл бұрын

    You don't need of more than 20kHz for motor PWM (just a bit higher than hearing sound). "Plate" on mosfet's gate waveform is a "Miller charge", generator has very weak output power for fast driving this mosfet (which is too powerful for this small motor). Also it's recommended to connect a diode to motor's pins for recuperate back EMF high voltage spikes.

  • @GeorgeJFW
    @GeorgeJFW4 жыл бұрын

    Really cool to see how the wave behaved under high frequency low dutie cycle

  • @SimpleElectronics

    @SimpleElectronics

    4 жыл бұрын

    Yeah I don't know why I waited so long to get a scope! - perhaps it was the cost lol

  • @GeorgeJFW

    @GeorgeJFW

    4 жыл бұрын

    @@SimpleElectronics I hear ya I really likey PC scope but I feel I need more soon lol

  • @bro-shamsulnubairi8689
    @bro-shamsulnubairi86898 күн бұрын

    hi, thank you for this great video. want to ask, how many watt is the output for this module?

  • @SimpleElectronics

    @SimpleElectronics

    7 күн бұрын

    Very low, in the order of milliamps, it's meant to be used where you would use a microcontroller

  • @jaggi_b
    @jaggi_b10 ай бұрын

    Will the set frequency and duty cycle for both channels individually remain the same even after the power supply is removed? or it gets reset once the power supply is removed.

  • @frdmdfndr
    @frdmdfndr Жыл бұрын

    Great video. Is there a way to make this module output a negative pulse? (without reversing the leads?) I need to make a set of HI/LO (+/-) with a common ground.

  • @SimpleElectronics

    @SimpleElectronics

    Жыл бұрын

    Not with this module but you can use it to trigger a negative pulse module for sure

  • @stever3886
    @stever38866 ай бұрын

    I see that some motor experiments need a “fly-back capacitor across the power-ground connections on the motor. Could this be the source of your funky waveform?

  • @jorgefelipegaviriafierro705
    @jorgefelipegaviriafierro7052 жыл бұрын

    Do you know how could I invert the signal and have the complement of pwm1 in pwm2? As the osciloscope was doing?

  • @neilbarnett3046

    @neilbarnett3046

    Жыл бұрын

    Look up circuits for a single transistor inverter, or use an operational amplifier.

  • @Razvii
    @Razvii4 жыл бұрын

    Hey finally an upload! Great job as usual, also have you considered having some soft background music? In my opinion it would work wonderfully for your video style

  • @SimpleElectronics

    @SimpleElectronics

    4 жыл бұрын

    I have considered it but there's a lot of BS on YT right now about companies copyright striking royalty free music, and I really don't want to go through that headache at the moment. I will keep the suggestion in mind though since I'll sometimes try new things on a whim

  • @Razvii

    @Razvii

    4 жыл бұрын

    @@SimpleElectronics yeah it's sad really but thanks for considering my suggestion!

  • @SimpleElectronics

    @SimpleElectronics

    4 жыл бұрын

    @@Razvii of course! I love community feedback!

  • @Seadogstudio

    @Seadogstudio

    4 жыл бұрын

    I appreciate having no music. I can concentrate on the speech.

  • @Mad_Scientist2052
    @Mad_Scientist20522 жыл бұрын

    Would you be able to make a short video of using this device as a cooling fan controller? Thank you.

  • @SimpleElectronics

    @SimpleElectronics

    2 жыл бұрын

    I think it would be a bit awkward as a fan controller - I think this would be a better option: kzread.info/dash/bejne/qn9srKh8aaeogrQ.html (full series)

  • @Mad_Scientist2052

    @Mad_Scientist2052

    2 жыл бұрын

    @@SimpleElectronics on second thought, your right. Thank you.

  • @SomeCatchyName
    @SomeCatchyName2 ай бұрын

    is there a place to get premade cases for these modules?

  • @juangizirian9810
    @juangizirian98106 ай бұрын

    Silly question but how am I supposed to see in realtime the duty varying on dso, I tried setting mine, but it's not showing in real time duty variation

  • @juangizirian9810

    @juangizirian9810

    6 ай бұрын

    Ok I think my model doesn't update real time, it's just after button release

  • @abeditani8293
    @abeditani82934 жыл бұрын

    Try this test with 12v lamp( old car lamp )

  • @starlight4038
    @starlight40382 жыл бұрын

    Hi, how to use this device in metal detector? thank you

  • @SimpleElectronics

    @SimpleElectronics

    2 жыл бұрын

    I have no idea!

  • @urbanasshole6926
    @urbanasshole6926 Жыл бұрын

    Please help with settings. I want to run both the channel on 50% duty cycle @ 1Khz. While I want to run channel 1 instantaneous, I want channel 2 to commence only after Channel 1 reaches zero duty. eg: When Ch.1 = 5v, Ch.2 = 0v and vice versa. Thanks

  • @beeptecengineering9884
    @beeptecengineering98844 жыл бұрын

    I liked your experience. How about UART management?

  • @SimpleElectronics

    @SimpleElectronics

    4 жыл бұрын

    I am definitely no expert in comms, but I'm willing to learn!

  • @SoundOfYourDestiny

    @SoundOfYourDestiny

    4 жыл бұрын

    I have the single-channel one and serial control at 9600 works fine.

  • @alexvisard

    @alexvisard

    4 жыл бұрын

    @@SoundOfYourDestiny Did I understand you correctly that you transmit control commands and read parameters?

  • @SoundOfYourDestiny

    @SoundOfYourDestiny

    4 жыл бұрын

    @@alexvisard Yep. The syntax is simple. You can find it in the product description here: www.ebay.com/itm/3-3V-30V-Adjustable-Module-PWM-Pulse-Frequency-Signal-Generator-Test-Equipment/132575860363

  • @SoundOfYourDestiny
    @SoundOfYourDestiny4 жыл бұрын

    Mine has the same visibility problem, even to the naked eye. Kinda lame.

  • @felixcat4346
    @felixcat43463 жыл бұрын

    I don't think your driving the gate of the mosfet with enough current to get clean switching.

  • @jimmybrad156

    @jimmybrad156

    Жыл бұрын

    mosfets are voltage driven, not really current driven.

  • @abeditani8293
    @abeditani82934 жыл бұрын

    You missing the diod ( it necessary for the motor ) that why you see this signal

  • @SimpleElectronics

    @SimpleElectronics

    4 жыл бұрын

    hmmmm you may be right, I'll have to try that

  • @abeditani8293

    @abeditani8293

    4 жыл бұрын

    Schotty diod ( for the low reverse signal )

  • @felixcat4346

    @felixcat4346

    3 жыл бұрын

    It's got a built-in diode according to the video, so WTF?

  • @E-BikingAdventures
    @E-BikingAdventures Жыл бұрын

    I could see by your plastic component container that you are Canadian. Dollarama.

  • @SimpleElectronics

    @SimpleElectronics

    Жыл бұрын

    Yes sir, Ottawa, Ontario, Canada

  • @E-BikingAdventures

    @E-BikingAdventures

    Жыл бұрын

    @@SimpleElectronics . Hey me too! Vanier. I probably know sombody that knows somebody that knows you.

  • @tataportfolios8565
    @tataportfolios85653 жыл бұрын

    1.0.1 mean 101Mhz

  • @JB-20

    @JB-20

    3 жыл бұрын

    1.0.1 means 101khz. This is limited to 150khz remember.

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