Power Wall Upgrade - Assembling two new PWM5s
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- Опубліковано 11 вер 2024
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Fitting the thru-hole components to a couple of PWM5 Femto (V2) solar charge controllers, and attaching wires.
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Take a shot everytime Julian says ""Worlds smallest solar charge controller" 😊
Explicit themed monologues while soldering smd's - totally relate to that, especially with shaky fingers
wow! congrats on getting all that together. I dont think I'd have enough patience to deal with that many tiny surface mount components. The one time I soldered a single chip on a Honda pcm using the heat gun, other pieces got moved around--explitives were necessary. haha
They put steel screws in an outdoor enclosure, brilliant. You'll have to get some stainless screws.
You're getting a bit obsessed with "the world's smallest" Julian! Reminds me of the great Sir Clive and all his projects back in the sixties. 😁
Your surface mounted soldering skills are beautiful art compared to mine.
Thank you - that feels like being told I should enter a Miss World competition. Much appreciated :)
For the surface mount stuff you could turn an iron into a surface mount solder heater thing. I forget who did it but I’m sure you can find on UA-cam.
JUMP SCARE WARNING AT 17:35 😂😂
Yeah, low battery is the only notification I can't disable :)
Crazy how awesome you have done this. Keeps getting better.
Hello Julian, maybe you knew this already but from Jan 1st all purchases we make through AliExpress etc will have VAT added to the cost. Did you know that? (Sorry - this comment is completely unrelated to this video!) Any thoughts on it? I just prepared an order for some of those small "360" buck converters (hence thought of you!) and the cost was a bit more than I expected. Seems like the days of nice cheap stuff from China are coming to an end?
I kinda remember when you designed this, and the idea of using the component legs as high current connections is a great one !...cheers!
Julian, it is time to buy a hot air rework station, it will make doing SMT so much easier !
Or just go into full surface mount denial ;)
@@JulianIlett SMT changes from being a pita to fun when you have hot air :)
You under-estimate the power of water vapor!
Condensation will get into your box from microscopic cracks around the cables, and create a humid environment with over 90% humidity.
You'll see a fog build up from the inside when the dew point is low enough.
The only way to stop water, is to encapsulate in something. Your little module is screaming for a little epoxy love.
An old fashion match box would be a good mold. You must have $1 epoxy from your revision of Dollarama we have here?
one pack with do all 3. Then you put it in your box, and that's all she wrote...
Not keen on potting - it rules out ever making a repair, or carrying out an autopsy. I have seen vapour on the inside of the enclosure - but it's never more than a thin film.
@@JulianIlett That thin film of vapor will corrode the inside with it 1-2 years.
Video tape it then. I'd love to see the damage after a year.
The problem is that condensation will get worse as time goes by.
Funny thing about water, it gets everywhere, and loves dissimilar metals in contact with each other, to setup a galvanic all-you-can-eat buffet, and munch on ions, until no more corrosion to be had!
This is a good reason to have both a couple of drain holes and a small air vent so there is at least some air flow. It’s the high humidity that causes the problems.
I think you would find it easier to use solder paste and an SMD hot air station than a soldering iron. I remember you using soldering paste before (you made that paste dispenser pusher) so wouldn't that get rid of some of the frustration of soldering all those SMDs with the side benefit of keeping them all straight?
I'm 60 in February - maybe it's time to stop all this circuit design stuff.
Maybe I should just take stuff apart and make a few wry comments.
@@JulianIlett - 60? I didn't think you were that old. You don't look it!
And "NO" you should not stop designing stuff. That's just silly! Designing "stuff" is great fun and there is no age limit. Keep it up, Julian!
But do get yourself a hot air station. ;-)
@@JulianIlett - you’ed have to start buying cheap pink coloured items full of automatic smoke releasing components then... 😁
I take it you used two different SOT23 transistor pad layouts because you had less room on the top? Did you try rotating the top side ones 90°? It looks like you would have more room that way without the "V2" label in the corner.
I used the footprints as supplied in EasyEDA. So many inconsistencies in the footprint libraries.
@@JulianIlett - I noticed that too. That's one of the down sides of an open user supplied database like that. But I assumed you just used the wider/longer footprint for the SOT23 because you had more room on that side. I think a 90° turn would help in *V3...* ;-)
Where did you get those boxes from and what is the hole spacing in the back?
Waiting for next video Sir 👍
Look at your screws for the box lids and I think you will find they are plated steel not SS as they should be for a waterproof case!!
I often use a hot air station or solder paste with a hot plate if i'm doing lots of SMD by hand, yours really isn't that bad though. :)
Great video!
Shame you never finished the vocoder :/ I too am guilty of starting load of projects and never finishing them.
Me too. I have ADHD though so to be expected I guess
The vocoder is all laid out on its own shelf in the shed - it's just a bit cold out there at the moment.
Hi Julian, Any plans to upgrade it to support lithium batteries?
No, sorry :/
Works as-is for 4S LiFePO4, other lithium chemistries are really just a matter of changing the voltage limit.
@@JulianIlett No problem. Thanks !
@@NiHaoMike64 Thanks !!
I didn't realise you can get scored boards from JLPCB.
Using EasyEDA Select Tools > Panelize, select Panel by V groove. Or however it is done on the software of your choice. JLCPCB have a minimum distance between V grooves of 20mm, they can do them closer but there will be an engineering fee for going below 20mm.
@@steverpcb Thanks, I use Vutrax because I had to learn it at work, time to learn another CAD then.
Yeah, I was lucky with these PCBs. I get them made before they started charging for V-scoring small boards :)
Hey Julian, where did you get those enclosures?
I still vote for using fuses on those big "outdoor" batteries. Even if you used just one "big" fuse at the battery and everything connected to it it would be much safer. Use a 10A fuse or whatever your max current needs and it would be done for everything you connect. It would also cover your butt for home insurance if your fence caught on fire next time. The cost is minimal for an inline weather resistant fuse holder assembly (wires and all) from your local automotive store. Better safe than sorry with those big bad ass batteries! 8-)
Hmm...
Loss adjuster: What's all that electrical shit screwed to your fence?
Me: But I used a fuse.
Loss adjuster: That's OK then - payout in full :)
@@JulianIlett - Well at least it would look like you had safety at the forefront. AND you would have proof on your YT channel to that effect!
It has to be said, that if you use ceramic sand filled fuses, it does reduce the likelihood of arc damage should a short circuit occur. The short circuit current of lead acid cells / batteries can be hundreds to thousands of amps. And if the short circuit occurs very near the battery, it can cause the battery to bubble and either violently vent, or burst. And you don’t really want acid spraying out, it’s not very pleasant...
I use high rupture fuses rated at 5A, 10A, 20A and 25A on my large lead acid batteries, depending on what the fuse is protecting.
After the high rupture fuse, for the smaller loads (like LED lights), I use 20mm or 1¼” glass fuses.
@@Mark1024MAK used to work in a car/boats pages shop, heavy on tyres and batteries. Once had a customer bring the remains of 2, bought a coupled of days old, 220 Ah 12V batteries. Remains I say - yes, he had intended to wire them in parallel, but accidentally wired them in series and then managed to short it all w/ nice thick, short jumpers. He was very very lucky to be using glasses, his tan was rather blotchy. Said he jumped overboard to rinse off the acid.Quite impressive how much that melted and blew up...
That's nice! When will you develop the mppt code for it?
How many times have you stuck the pins in your fingers?
Not yet :)
Even if you say "Worlds smallest solar charge controller" it doesn't mean much..what i mean is ..i would rather welcome board with proper connectors also i didn't see any output protection ..maybe there is..who knows..if you don't need small board then why to force it ? also there isn't posibility to program it to different voltage..right ?
How can one get one of these? Does it have Low Voltage Disconnect?
Is this a kit?
Can you share code schematic?
If only you had a channel where you could show footage not suitable for the main channel.....
If only :)
yay is this Just very similar to the other one ?
Identical:)
stronger glasses , expletives are proportional to the level of difficulty involved I find.
gosh, could you not make it smaller?? :-) I mean you could use 0603
New year's resolution - nothing smaller than 0805 :)
@@JulianIlett a very good and sensible new years resolution if I might say :-)
@@JulianIlett I think I said that a few years ago...and I've stuck to it !....cheers!
@@fredflintstone1 Squeak!
@@andymouse HA HA sorry I do not speak mouse:-)
You should make an onlyfans for your expletive-filled monologues.
First!