Finally, my 30 LEDs are flashing the desired sequence. Numerous minor issues.

By Julian

Youtuber, shed dweller, solar charge controller aficionado

17 thoughts on “Sequencing 30 high power leds with arduino and led drivers #4”
  1. Avataaar/Circle Created with python_avatars Glen n72 says:

    Thank you..
    Some very useful tips and guidance integrating several strands..
    Thank you Julian.
    "Keeping it real".

  2. Avataaar/Circle Created with python_avatars the deep says:

    Great!! Which optocoupler you have used???

  3. Avataaar/Circle Created with python_avatars Dion G says:

    Can you help me do this with 4 leds?

  4. Avataaar/Circle Created with python_avatars DavidRio Stanczak says:

    I loved this.. as all your vids! I wonder why you didn't… better yet… if you would please?…. redo this project.. with ONE led driver.. and mosfets doing the switching,, and lite adjustable brightness ,,, and either arduino,, or better yet.. please do something with serial communications from a computer to run the mosfets.. THANKS FOR THE VIDS! I LOVE THEM!

  5. Avataaar/Circle Created with python_avatars Maher says:

    +Julian Ilett hi, hope you can advise me regarding the led driver and what best to use for an sla lcd 3D printer.
    i have 30 uv led 3W 405nm , thy have to be controlled by the Ramps 1.4 . what electronics parts should i purchase ?
    in your 4 videos i didnt hear you mentioning the Amps as your more talking about the Voltage .
    hope you can help me thanks

  6. Avataaar/Circle Created with python_avatars Jay Herde says:

    Great video comparing the different driver modules using the 'output enable' function. The question that got 'lost' is – why 3 drivers? In this case, it's to compare the drivers. The major concern in the result is the delay (soft startup) of one of the drivers. If the 'soft startup' can be disabled, it's not a problem. However, in actual application, that concern is minimal because all 3 drivers would be the same. This means that all drivers should act in a like manner.

    I really like the variety of topics that you get into. Thanks

  7. Avataaar/Circle Created with python_avatars Nipplestifilitus says:

    Could i use this setup to make alternating strobe lights?

  8. Avataaar/Circle Created with python_avatars Robert Grant says:

    Julian, great tutorial, If I can ask you to show me what led readout panel and how you wired it up to the up converter I would really like to see how you did that, I'm new at this but never to old to learn. I'm 73 and I love this stuff… Thank you! Bob G

  9. Avataaar/Circle Created with python_avatars Turkey Lips says:

    I had trouble finding buck converters with enable output (input?).  The LM2596 data sheet lists pin 5 as Not-on/off.  And, it works !   The  Arduino 5v TTL logic output will drive this input (with  common ground, of course), but the opto isolation is a good insurance policy.  Any way, +5 volts turns the LM2596 off and remove the 5v (float the input?)  or set it to ground, allows it to turn on.    The 3 pot CC/CV board and the single pot board ,CV,  have the chip in an easy to get at location.  I use a jewelers screw driver to lift the pin 5 as I unsolder it.  Then I solder  a wire onto pin 5 to bring it off the board as Not-enable.   OK,  Thanks a ton for the mind provoking videos.

  10. Avataaar/Circle Created with python_avatars H. Hall says:

    Nice video, thanks! I wonder why you don't use the boost converter with a voltage divider circuit to power all the LEDs? Skip the buck converters.

  11. Avataaar/Circle Created with python_avatars Simple & Unique says:

    I love ledeeeeeees

  12. Avataaar/Circle Created with python_avatars Marcos Diaz says:

    HI Julian Ilett, First of all great video really cleared alot of info i needed to know. second my question would be, what other Components or parts would i need in order to create the "MONKEY LIGHT PRO EFFECT?
    Thank You

  13. Avataaar/Circle Created with python_avatars Romeo Icao says:

    hi,, I'm planning to make street light for my farm using 60 pcs 5w led beads. . please help me. what is my power supply and wiring diagram for my DIY project. . I'll take care if the cooling system. thank you

  14. Avataaar/Circle Created with python_avatars John Liss says:

    I really enjoy these little projects you do… Keep it going!

  15. Avataaar/Circle Created with python_avatars Jesse Dielschneider says:

    this is similar to what im trying to do.i am trying to build a strobe for my postal vehicle,i was thinking 2 clusters each with 3 3watt LED's.would i have to have a driver for each cluster?

  16. Avataaar/Circle Created with python_avatars Braulio Rubio says:

    Thanks good job

  17. Avataaar/Circle Created with python_avatars Rik Schaaf says:

    This should fix the blink problem:

    // the loop routine runs over and over again forever:
    void loop() {
      digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)
      delay(10);                // wait for 10 ms
      digitalWrite(11, LOW);    // turn the LED off by making the voltage LOW
      delay(100);               // wait for 100ms
      digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW
      digitalWrite(12, HIGH);    // turn the LED off by making the voltage LOW
      delay(100);               // wait for 100ms
      digitalWrite(12, LOW);    // turn the LED off by making the voltage LOW
      digitalWrite(11, HIGH);    // turn the LED off by making the voltage LOW
      delay(90);                 // wait for 90ms
    }

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