JLCPCB Prototype for $2(Any Color): https://jlcpcb.com
Electronic parts for projects.

By Julian

Youtuber, shed dweller, solar charge controller aficionado

18 thoughts on “Julian’s postbag #143 – wattmeter, bms, lm324”
  1. Avataaar/Circle Created with python_avatars Emalo says:

    Awesome videos, love watching unboxing things!

  2. Avataaar/Circle Created with python_avatars David Schwarz says:

    Hi, could you tell me where the adjustable power supply you used to power the wattmeter is from? I would like a little simple one like that for quick checks of things. Love the videos!

  3. Avataaar/Circle Created with python_avatars Ben Baselet says:

    Julian relying on the midwinter sun for his video projects. After building a number of battery networks and buying thousands of LEDs over the years… Don't ever change 😀

  4. Avataaar/Circle Created with python_avatars William Wilson says:

    There are plenty of rail-to-rail op-amps to replace the LM324 for your application. Try the LMV324.

  5. Avataaar/Circle Created with python_avatars Zadster says:

    For anyone who prefers not to trust Chinese sellers, DIP LM324s are only circa 35p each from RS/Farnell/Rapid, 5p-10p for surface mount packages. I think I'd pay the extra to guarantee genuine and new items in my project. YMMV obviously.

  6. Avataaar/Circle Created with python_avatars Donald Filbert says:

    Have you ever found one of those volt/amp panel meters that actually measured negative current? I have looked all over and never found one. I'd also like to find one where the meter power is isolated from the measured power !! I have a few apps where the common ground actually shorts out the load because the two black (ground) leads are bridged internal to the meter.

  7. Avataaar/Circle Created with python_avatars T.J Theron says:

    Elite.element on Ebay sells bidirectional ammeters.

  8. Avataaar/Circle Created with python_avatars Joseph Neale says:

    Great 👍🏻 video as 👍🏻❤️

  9. Avataaar/Circle Created with python_avatars Easy One says:

    nice

  10. Avataaar/Circle Created with python_avatars Franko Walker says:

    Merry Christmas everyone 🙂

  11. Avataaar/Circle Created with python_avatars Bosted Tap says:

    May I wish you and your family a very Merry Christmas and a Happy New year.
    Thanks for sharing your video's in 2019.

  12. Avataaar/Circle Created with python_avatars Andy Jary says:

    Merry Christmas, Julian! Thanks for all the great videos in 2019.

  13. Avataaar/Circle Created with python_avatars Rizki Pratama says:

    Finally something that is not about making weird noises.

  14. Avataaar/Circle Created with python_avatars pileofstuff says:

    "I can't quite remember what the purpose of buying this was"…

    Yeah, I hear myself saying that uncomfortably often as well.

  15. Avataaar/Circle Created with python_avatars AlmostAnEngineer says:

    Do we reckon Alice was born on 1st October, or the 10th January?

  16. Avataaar/Circle Created with python_avatars Utkarsh Amitabh Srivastava says:

    Try some high CRI LEDs like the ones BigClive uses.

  17. Avataaar/Circle Created with python_avatars J H says:

    @5m25s: "…can't remember…" SOLAR PANELS !! Voltage, Current, and POWER !! Makes manual adjustments for MPPT easy.

  18. Avataaar/Circle Created with python_avatars J H says:

    @4m15s: "US$4.49" for the lovely meter. Might be a bit cheaper on AliExpress, presently $4.28 with shipping. Varies.

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