Big thanks to Patreon supporters who make Postbag videos possible - Patrons got to see this video 2 days before anybody else.
This is a mini Postbag followed by some modifications to my 6x 120F supercapacitor module.
UPDATE: So it's 48 hours later and there's still 6 volts on the meter 🙂
1206 SMD SMT LED Red Green Blue Yellow White 5 Colours Light Super Bright LED http://www.ebay.com/itm/1206-SMD-SMT-LED-Red-Green-Blue-Yellow-White-5-Colours-Light-Super-Bright-LED-/311682251558
White DC 0~20V 85C1-V Class 2.5 Voltmeter Analog Volt Panel Meter New #Unbranded http://www.ebay.com/itm/White-DC-0-20V-85C1-V-Class-2-5-Voltmeter-Analog-Volt-Panel-Meter-New-/171746230324

By Julian

Youtuber, shed dweller, solar charge controller aficionado

17 thoughts on “Julian’s postbag plus: #103 – supercapacitor module updates”
  1. Avataaar/Circle Created with python_avatars Master Traders Ph says:

    Great project! I would like to do the same with my DIY.

  2. Avataaar/Circle Created with python_avatars mindyourownbusiness says:

    SMDs suck! Youre not alone.

  3. Avataaar/Circle Created with python_avatars Faisal Khan says:

    I have been watching your videos for over a year now. I need to order my first set of super caps. Any recommendations?

  4. Avataaar/Circle Created with python_avatars X Xycom says:

    Julain, I was cringing while you attempted to solder that LED. Why not use flux? Watch Louis Rossmann , or Jessa while they repair Apple boards.

  5. Avataaar/Circle Created with python_avatars Roy Tellason says:

    I'm going to seriously disagree with your comment about how the seller can't be held responsible for the damaged meter. The hell they can't! That was simply not packed properly, and if you were talking about a situation where a carrier had a claim filed that's exactly what they'd say…

  6. Avataaar/Circle Created with python_avatars jlucasound says:

    I love analog meters.

  7. Avataaar/Circle Created with python_avatars Curt Stacy says:

    Yes, SMD's suck compared to through hole. I now use a good pair of reading glasses while doing it. they help a lot! until the wife is talking to you and you look up at a big blur. lol

  8. Avataaar/Circle Created with python_avatars Eric Carlson says:

    Don't feel bad about soldering surface mount they like to skid all about the board like hover craft. Trick is tin one pad (no matter the package type) and tack the part in place. Solder all the rest and re-flow the tacked solder point with fresh solder. Liquid flux or better yet flux paste is your friend as well.

  9. Avataaar/Circle Created with python_avatars flickpad says:

    Yes, surface mount is a pain. Looks like it's going to be harder to get tinker-friendly components, so I guess we'd better get used to them. (53 yo, +2.0 reading specs)

  10. Avataaar/Circle Created with python_avatars FourSeasonsHD says:

    Thanks for the many videos. Do you have a diode to suggest that would drop about half a volt and could take 5 – 10A? It might be useful for a lead acid battery undervolt protection. Instead of dropping down to 10 volts (and ruining the battery), it would only drop to 10.5 volts.

  11. Avataaar/Circle Created with python_avatars Gadgetboy says:

    For SMD led's (and many other SMD components) there's a really easy trick to soldering them. Flow a blob of solder onto ONE pad. add a bit of flux, re-melt it and touch the led to it. The liquid solder will suck the LED in and position it. Let the solder set, then flow the other side. Simple and easy.

  12. Avataaar/Circle Created with python_avatars Gadgetboy says:

    SMT= Surface Mount Technology

  13. Avataaar/Circle Created with python_avatars eugene snell says:

    Failing eye sight, twitchy hand……. I despise SMD's. If I were younger and healthier, I probably have fewer issues with using them.

  14. Avataaar/Circle Created with python_avatars Keith Howard says:

    Wait until you get to 70, then worry about your soldering!!!!

  15. Avataaar/Circle Created with python_avatars Rohit Arora says:

    links for that 140F supercapacitor bank , thanks 😀

  16. Avataaar/Circle Created with python_avatars DrTeeth says:

    Sender IS responsible. They should pack things better. Bubblewrap is not expensive.

  17. Avataaar/Circle Created with python_avatars DrTeeth says:

    On a couple of occasions you said half an amp was going in but the display showed 0.2 amp. Good vid. Going to buy some super caps for a play soon, and it will be your fault. LOLZ!

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