This digitally controlled buck converter is so stacked with features, it's more like a miniature bench power supply.
Input: 5V to 40V, Output: 40V 3A

By Julian

Youtuber, shed dweller, solar charge controller aficionado

15 thoughts on “Review: 3a 40v digital buck dc/dc converter – it’s more like a bench psu!”
  1. Avataaar/Circle Created with python_avatars BigBen says:

    Thanks for your video.
    Do you know of how I can connect this module to an Arduino using the TX and Rd pins on the b3603 module?

  2. Avataaar/Circle Created with python_avatars a smol bean says:

    This is really cool ngl

  3. Avataaar/Circle Created with python_avatars Mariusz Mario says:

    How to return to factory settings?

  4. Avataaar/Circle Created with python_avatars UYC says:

    cool

  5. Avataaar/Circle Created with python_avatars LEO says:

    I know this might be a stupid question but for one to get 40V out one world need a 40V transformer?

  6. Avataaar/Circle Created with python_avatars speedsterh says:

    Awesome info ! I've got a cousin of this module in the form of a Boost converter. It's a 8-60V to 10-120V converter that I use a solar PSU for my lithium batteries (great for charging to the desired voltage and up to 10A if need be). The interface uses the exact same features as this module (including hiddne menues), that means I can display instantaneaous power and total Ah put inside the battery. Thank you, thank you, thank you for enlightening me on this, I never would have found by myself ! I'm subscribing to your channel right away.

  7. Avataaar/Circle Created with python_avatars Adam Williams says:

    Why have you not put a purchase link so annoying

  8. Avataaar/Circle Created with python_avatars Blue Sky says:

    BUTT Converter.

  9. Avataaar/Circle Created with python_avatars Jerry Ericsson says:

    Thanks again, I purchased one of these years ago when I first viewed this video. Then I played with it for awhile before putting it in a box where it sat, doing nothing for a couple of years, perhaps 3 or 4 I don't recall. So the other day I thought I would like to build a variable desktop power supply, I had already built a couple of solid 3 volt, 5 volt and 12 volt multi volt units, one that runs directly off the 110 volt mains and another that I power with 4 18650 batteries when I just want a quick power up. I purchased a nice little 5 volt unit and modified it via the Big Clive channel to give a good solid 5 volts and use it to both light up my power shelf and power anything that really needs a good pure 5 volt power. So I dig out the old unit and using some old ATA hard drive cable with added DuPont ends, extended the screen to the outside of a project box, then added a nice lcd monitor to watch the out-put, and powered her with 3 18650 batteries. Made a nice unit but over the years I pretty much forgot all about how to run the thing. SO this video came to mind, and I was off in search of it. Found her today and now I know how to run my new DC-DC bench power supply with duel digital display!

  10. Avataaar/Circle Created with python_avatars kapegede says:

    Thanks Julian! I got one of those by chance and your review of the hidden menues is great. Hidden menu 2 is "cycling through the voltage, current, power and capacity" automatically – or even not (Y/N).

  11. Avataaar/Circle Created with python_avatars Vladimir Petrov says:

    Hello.This device can be used as a charger?

  12. Avataaar/Circle Created with python_avatars Ruben Heredia says:

    Very good !!!

  13. Avataaar/Circle Created with python_avatars Tuhin santra says:

    Where its u buy?

  14. Avataaar/Circle Created with python_avatars Deepak says:

    What is the part number of the mcu

  15. Avataaar/Circle Created with python_avatars caribbeanchild says:

    Oh look!! More stuff from China… I think I'll spend the next half an hour figuring out if the cords get warm when I plug everything in!! LOL

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