Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com
eBay Links:
10pcs SMT SMD Kit Lab chip Components Screw Storage Box Case https://www.ebay.com/itm/-/172113708463
10x DIY Prototype Paper PCB Experiment Board Bakelite Circuit Board 4.8x13.3cm https://www.ebay.com/itm/-/192510393485
5 Ground Circuit Terminal Blocks Dual Row 5 Position Screw Terminal Strip + 600V https://www.ebay.com/itm/-/292502772907
Super Power 5 Second Fix UV Light Repair Tool Glue Refill Liquid Plastic Welding https://www.ebay.com/itm/-/311926370683
10PCS 2.54mm 10 Pin 2x5 Pin Double Row Straight Male Shrouded header IDC Socket https://www.ebay.com/itm/-/202217999442

By Julian

Youtuber, shed dweller, solar charge controller aficionado

16 thoughts on “Julian’s postbag: #121 – things you asked about”
  1. Avataaar/Circle Created with python_avatars Collin Baillie says:

    I'd love to know more about your UV Torch. So many UV LED type torches, and comments saying UV LEDs are as effective as glass bulbs. What voltage does yours take? Many use AA or AAA batteries, either 1s1p or 3s1p. Some use 14500 3.7v Lithiums or regular 1.5v AA. I wonder do you use your eneloops in you torch? What is the watt rating of the bulb? And which wavelength UV (365/395/other nm) does it generate?

  2. Avataaar/Circle Created with python_avatars GrafRucola says:

    Ohh havenโ€™t heard of Alice in a while
    Edit: just seen itโ€™s an old video ๐Ÿ˜€

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

    Regarding those prototyping boards (and the leaky glue pen for that matter), "Ebay — the land of chinese factory seconds!" This would stop if enough people complained about defects like some of those that you pointed out and that I've seen mention of in the comments below.

    That other board you showed won't accomodate as much as one might think at first glace. You can only put chips straddling every other row of busses. I've looked at a lot of different prototyping boards over the years, and which one is best depends on what it is that you're trying to build. A circuit that involves many DIPs and not a whole lot else benefits from one layout, while a circuit that's mostly discrete components is going to benefit from another layout entirely.

    Radio Shack used to sell an assortment of boards, including the one you feature here. That one was a bit more expensive in terms of board real estate than most others, so I tended to avoid it.

    One other point, too — have you noticed how most of these little modules and whatnot coming from Asia seem to have absolutely no provision for mounting? I have a number of different regulator and charging modules that I've been inspired to buy since I started watching your stuff, and almost all of them have either no provision for mounting at all or maybe one single hole that's so small that my local hardware store doesn't carry anything small enough to use with it. I wonder what's up with that? I guess they're figuring that whoever uses this stuff is going to be putting it into some custom-molded plastic case or something. Not good for the hobbyist market, though.

  4. Avataaar/Circle Created with python_avatars Demon Cloud says:

    Please don't say " Good Morning to all " – I love the part when you say " Morning' all " – keep saying that, it sounds cool !

  5. Avataaar/Circle Created with python_avatars Alden Zenko says:

    I've never seen a file cabinet like that, only with the deep drawers. It looks perfect for boards too

  6. Avataaar/Circle Created with python_avatars Andy White says:

    The UV glue rocks… its tough and sticks to anything slightly porous and most smooth stuff too … I've used it to repair a chip in a porcelain bowl that's filled with oats and microwaved every morning – then washed. … I've etched glass with a scribe, filled the marks with ink and then sealed that with UV glue … been using it for over a year, its washed every day and is still stuck tight. I don't buy the pens, bottles advertised for tying fly fishing lures come in thick and thin and are ideal for repairs.
    I even glued a fingernail I tore right down to the quick. The repair grew out with the nail and was cut off with scissors. It's wonderful stuff.

    I don't know how it reacts with electrickery – but LOCTITE 480 BLACK INSTANT ADHESIVE is as good as its advertising. It sets almost instantly and sticks just about anything to anything (including metal) and won't let go. Well worth getting a bottle.

  7. Avataaar/Circle Created with python_avatars Candis Brendel says:

    MY LIGHT HAD BATTERY, MY GLUE LEAKED AS WELL, SMELLS FUNY. THE LITTLE LIGHT MAKES THE GLUE SMOKE!! JUST SAYING OLD ONE LEGGED JOSEPH T RETIRED NAVY

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

    Awesome video as always

  9. Avataaar/Circle Created with python_avatars Twotone says:

    Yes, shrouded plug and free line socket.

  10. Avataaar/Circle Created with python_avatars V Madison says:

    On July 8th, It was my birthday!! Like to wish me a happy birthday!! ๐Ÿ™‚

  11. Avataaar/Circle Created with python_avatars Drex says:

    In what way does JLPCB sponsor your videos? Do they give you money? Did they buy you a car? Just curious. Thanks.

  12. Avataaar/Circle Created with python_avatars Zafferung says:

    *torch

    Americanised idiot.

  13. Avataaar/Circle Created with python_avatars Petzi says:

    can you make a video about how to program an eprom and run the code with a z80 ?

  14. Avataaar/Circle Created with python_avatars Hola! Maico says:

    I'm still watching and predicing the package with multiple items is probably from Alice ๐Ÿ˜‰

  15. Avataaar/Circle Created with python_avatars Connor Chapman says:

    I love how you sound so posh and then say ain't lol

  16. Avataaar/Circle Created with python_avatars Martin J says:

    Pretty sure the "refill" part of the UV glue title isn't suggesting its refillable, but rather its a "refill" cartridge for people who already have the entire pen thing that's run out of glue

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