Julian's Electronics Postbag

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Julian Ilett

Julian Ilett

Күн бұрын

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@Leif_YT
@Leif_YT 4 жыл бұрын
From a listing of the K-300 glue. Set Time(s) = 10s/4mW/cm²UVA and Cure Time(s) = 180s/4mW/cm²UVA
@helmuthschultes9243
@helmuthschultes9243 4 жыл бұрын
Curing the UV glue is also influenced by the wavelength. Many of the UV torches are closer to 400nm ao rather more deep violet than ultra violet. Around 360nm works faster, even shorter is better still. The exposure time to cure the glue will be sugnifucantly longer for the long wavelengths. I found closer to 3 to 5 min for good curing. Intensity is less effective than shorter wavelengths!
@samesdee4655
@samesdee4655 4 жыл бұрын
Very helpful info! Been looking for quite some time to locate what wavelengths of UV are most effective/efficient at curing. Seems as though the manufactures of UV glue would publish the wavelength that is best for their particular formulation. Thank you Helmuth!
@CollinBaillie
@CollinBaillie 3 жыл бұрын
I have read that distance from the glue also plays a big part. Recommended 3-5mm from the glue.
@helmuthschultes9243
@helmuthschultes9243 3 жыл бұрын
Yes my message also stated 3 to 5, for some reason it was type/spell converted to "min" where I had wanted "mm", so that agrees to my former comment as best distance light to glue
@brendethedev2858
@brendethedev2858 4 жыл бұрын
Im so glad to see you uploading so much again! this has always been my favorite channel! you're experienced but you're not by and means slow which makes these videos so entertaining.
@incorporeal3793
@incorporeal3793 4 жыл бұрын
" Shake the bottle, shake the bottle, shake the f..ah, finally he shook the bottle!" 🤭
@lint2023
@lint2023 4 жыл бұрын
Put the cap back on. Put the cap back on. Put the .. 😄
@captainboing
@captainboing 4 жыл бұрын
For the UV curing glue, I use a UV nail arch like used in nail bars to set the gels. Just put it in there and it gets saturated with UV for a controlled time
@Ghlargh
@Ghlargh 4 жыл бұрын
Usually the UV adhesive you get in those large bottles is for joining a cellphone front glass to the touch sensor. It won't surface harden which means it will be sticky, it also won't go completely rock hard. What you want is UV cured "No wipe top coat" for nail art. That stuff hardens fully and leaves a dry surface. That said, all the ads that show people joining things like two screws end to end or repairing eyeglass frames are basically scams. UV adhesive is good for covering sensitive things (SMD LEDs on a PCB people are supposed to touch for example) or joining large transparent surfaces together (screen and touch sensor as above).
@TheEmbeddedHobbyist
@TheEmbeddedHobbyist 4 жыл бұрын
Hi Julian, is the i2C signals referenced to the gnd input, i can't see a digital ground. so not sure how they will communicate over I2C if the grounds are all at different potentials and you try and connect all the i2c lines to a mux?
@ElmerFuddGun
@ElmerFuddGun 4 жыл бұрын
10:53 Noooooo! Bad idea only putting a small hole in the seal. Now when it starts to get close to empty you will have to have it perfectly level and it will be more likely to spit out as you squeeze the bottle. Removing the complete seal allows the bottle to be at an angle and allows better flow. Think about it. And if you ever want to put the flat cap back on you'll get glue all over the place as there will still be glue in the funnel. Next time just cut it with your snap blade knife on the inside edge.
@muh1h1
@muh1h1 4 жыл бұрын
"Next time" as in "when you have used up that bottle and start a new one" which is probably "in 15 years" :D
@ElmerFuddGun
@ElmerFuddGun 4 жыл бұрын
@@muh1h1 - Perhaps but since Julian likes to use it as a conformal coating for his charge controllers I don't think it will last that long. At least he isn't using those tiny little "sample" size tubes!
@sdgelectronics
@sdgelectronics 4 жыл бұрын
I found that glue needs around 2 minutes with one of those powerful UV torches. Not quite how it's advertised...
@TheEmbeddedHobbyist
@TheEmbeddedHobbyist 4 жыл бұрын
dito, the little torch did not do too well. got a higher powered UV tube for a fish tank might give it a try.
@voltlog
@voltlog 4 жыл бұрын
We also don't know if the wavelength of these flashlights is what the glue needs.
@benbaselet2026
@benbaselet2026 4 жыл бұрын
@@voltlog I have seen claims of 220-260nm wavelength for this stuff so you'd need definitely something else than an LED for that.
@EsotericArctos
@EsotericArctos 4 жыл бұрын
Looks like the UV isn't penetrating through to the centre of the bolt. Maybe just bold.doesn't let light through it 🙂. Looks like it works though. A good shake will fix many things.
@kirkb4989
@kirkb4989 4 жыл бұрын
4 unique addresses with two settable address bits (A0 and A1): 00 01 10 11 so you can add 0, 1, 2 or 3 to the base address depending on how you connect the A0 and A1 bits (or not).
@lunokhodtoy
@lunokhodtoy 4 жыл бұрын
To get other addresses you need to connect A0/A1 to SCL/SDA.
@kirkb4989
@kirkb4989 4 жыл бұрын
@@lunokhodtoy I've never heard of that before. Are you sure? I think that would allow you to change the address of the module within the 4 address range dynamically but I don't understand how that would get you any other addresses. But I'm willing to learn!
@lunokhodtoy
@lunokhodtoy 4 жыл бұрын
@@kirkb4989 it is from datasheet, there multiple options to connect to, not just VSS and GND, it is new for me too :)
@petehiggins33
@petehiggins33 4 жыл бұрын
I think that what you missed with the UV glue advert is that they left a gap between the bolts so that the UV could penetrate and cure the whole volume of the glue. And they probably also edited out some of the curing time to make it look faster.
@fiskurtjorn
@fiskurtjorn 4 жыл бұрын
Bought a bottle too. I got a decent manual with it. The glue is for glass, and at least one of the glued parts needs to be transparent. Waterproofing electronics is a bit of a gamble i find. I use that big yellow-ish UV-gun outside.
@note3958
@note3958 4 жыл бұрын
i got some of the same glue from aliexpress,its only 2.99$ i also got some 3w leds at 395nm and they work really good.
@ParedCheese
@ParedCheese 4 жыл бұрын
I was surprised at how exothermic the setting reaction is. It gets quite hot!
@JohnKnutsson
@JohnKnutsson 4 жыл бұрын
Link to UV torch? Thanks in advance! Looking forward to next video!
@isoguy.
@isoguy. 4 жыл бұрын
Love your channel but 4 ads and a shout out for jlc in a 16 minute vid just makes it really annoying Thanks for sharing 👍👍👍
@Mark1024MAK
@Mark1024MAK 4 жыл бұрын
An advertisement right in the middle of you going through the eBay listing was *REALLY* annoying grrrr 😡
@callumBee
@callumBee 4 жыл бұрын
Adblock ;) Until the internet gets its act together and does reasonable ads then Adblock will be used.
@JulianIlett
@JulianIlett 4 жыл бұрын
That's how KZbin is these days - watch me on LBRY if you don't like ads
@AllLoudNation365
@AllLoudNation365 Жыл бұрын
Ooo bigclive style! Lots if displays and readouts!!
@deslomeslager
@deslomeslager 4 жыл бұрын
Let me know if you solve the K300 problem. I bought 2 bottles in 2019 (after seeing you glue your pcb's). No matter how much UV light I shine at it, it never gets solid. Even tried several frequencies and intensities of UV (sunlight of course as well). Shaking the bottle did not help either. I now have two of those bottles laying in my drawer. Getting old. So please find out how to use it as 'glue' because currently it is just a sticky liquid. Note: my real intention was to glue solar panels from Ali, to make them more rigid (those very thin ones, you know them? Just micrometers thick). But the glue never dried, so that was the end of a failed project.
@melkiorwiseman5234
@melkiorwiseman5234 4 жыл бұрын
Here's an experiement to try: Leave it in the sun for an hour and see if that does the job.
@deslomeslager
@deslomeslager 4 жыл бұрын
@@melkiorwiseman5234 Yes, I know. And tried. I think it was a faulty batch. PS: currently it is winter, and there is not much sun right now.
@benbaselet2026
@benbaselet2026 4 жыл бұрын
I've seen quotes where it needs 220-260nm wavelength. If that is correct you might be able to do it with an expensive LED but probably some germicidal tube like pulsed xenon (works wonders on erasing old ROMs BTW).
@melkiorwiseman5234
@melkiorwiseman5234 4 жыл бұрын
@@deslomeslager Based on that information, I think you may be correct and it was a bad (or just sub-standard) batch.
@melkiorwiseman5234
@melkiorwiseman5234 4 жыл бұрын
@@benbaselet2026 The main problem with using short UV is that you need to shield it so living things aren't exposed. It's especially bad for the eyes.
@chrisw1462
@chrisw1462 4 жыл бұрын
Current monitor I2C address... Four addresses.. 00, 01, 10, 11. But you can always use another two data lines for a soft I2C line.
@whitehoose
@whitehoose 4 жыл бұрын
I set mine with a 50 led 240v lamp - I've been using what looks like similar stuff. First time I used it I thought it was rubbish. My usual glue comes in 10ml bottles and only takes a couple of seconds to cure, this new potion wouldn't set = After a bit of playing I found it takes considerably longer but to be fair sets much harder/stronger and without the sticky residue but we're talking 5+ minutes. Longer to be safe.
@tomgeorge3726
@tomgeorge3726 4 жыл бұрын
The R010 resistor looks like a SMD version of a ceramic power resistor. If your cells are in series, will you be able to connect all the I2C comms together? You may need a I2C isolator. How will you power them, is gnd on the output terminal strip connected to gnd on the battery measurement side? You need to draw a schematic and check your potential difference logic. The UV glue, because you are trying to use it like a filler, may need more time to penetrate. The pens dispense a thinner/less viscous liquid.
@cheetahkid
@cheetahkid 4 жыл бұрын
I probably point your way, I would believe because the ground is the only fixed point, I would just use one of 226 and the other I would go for ADS1115 (there are 4 voltage reading).
@TheEmbeddedHobbyist
@TheEmbeddedHobbyist 4 жыл бұрын
Thinking that if you only care about current, connect the grounds together. then the I2C will all be at the same 0V so should be ok. As long as the battery voltage does not exceed 36V it might work. might work, might let out some magic smoke. But thats where the fun is.
@MikesAllotment
@MikesAllotment Жыл бұрын
I know it's been a long time since this video, and I also know that you made power meters using the INA219 module, but did you ever do anything with these INA226 modules? I've used INA219 modules before, but they are limited to max 3A current - which is why I guess you went for the INA226 instead as I believe they can handle higher current? Interested to hear what you did with them....
@TheWareek
@TheWareek 4 жыл бұрын
there are nuclear reactors with less wiring and monitoring, than your battery pack.
@josephnealescratchcards
@josephnealescratchcards 4 жыл бұрын
another great postbag opening on video as always
@CollinBaillie
@CollinBaillie 3 жыл бұрын
It would be interesting to see a comparison of the other grades (302 and 303) they make, along with other makers. On our favourite eastern market place, there are brand like Locttlf (looks like a loctite knock off brand), visbella, lazerbond, and then there are "UV Resins" which are labelled as "hard" and "soft" (usually featured being used to fabricate jewellery) If you want to experiment to find a bull alternative which works really well, or you're looking for a showdown type video, this might be interesting.
4 жыл бұрын
Try the INA2xx library. It is designed to scan the I2C buss for INA219/226/3221 ICs and read them all from a single command.
@flagpoleeip
@flagpoleeip 4 жыл бұрын
I think the delivery dates are if you ordered them now.
@davestech6357
@davestech6357 4 жыл бұрын
I have a led streamlight flashlight and the filter on the led came off. The light is bluish purple, do you think it is ultraviolet too? I am sure you have some lights lying around you can modify and try?
@IncertusetNescio
@IncertusetNescio 4 жыл бұрын
Anyone know where you can get those non-solder/weld battery pack holders or the keywords?
@joeyfren1748
@joeyfren1748 4 жыл бұрын
Could you use standoffs for stacking those circuits?
@deathshaker0026
@deathshaker0026 4 жыл бұрын
Ya I ordered that same UV glue last year and had the same problem.
@frankowalker4662
@frankowalker4662 4 жыл бұрын
Igor, More light!!! More glue!!!
@nabilandadamslaboratory3422
@nabilandadamslaboratory3422 4 жыл бұрын
Sorry I didn't get what's different between the IN219 and the INA226.
@robertcromwell9736
@robertcromwell9736 4 жыл бұрын
Can those things have 5 different I2C addresses?
@pileofstuff
@pileofstuff 4 жыл бұрын
I'm not sure it can with the pads that are broken out. Maybe there are additional address pins on the chip that can be accessed via bodge wire?
@DavidGranz
@DavidGranz 4 жыл бұрын
e2e.ti.com/support/amplifiers/f/14/t/811151?INA219-I2C-Address
@pileofstuff
@pileofstuff 4 жыл бұрын
@@DavidGranz Wow, that's an unexpected addressing method.
@DavidGranz
@DavidGranz 4 жыл бұрын
I should add that while the INA219 does support strapping for 16 addresses, the breakout boards do not easily allow more than 4 addresses. It's possible to strap to the other addresses, but resistors will need to be removed from the A0/A1 lines and patch wires added. It may be easier to use a I2C multiplexer
@christianharris2158
@christianharris2158 4 жыл бұрын
have you had any problems with post from china?? ive not received any in weeks now.
@ricininepartypillz9248
@ricininepartypillz9248 4 жыл бұрын
A KZbinr called 'Sorin-DIY Electrical Nerd' made something similar using that BMI you showed first
@justinkoldenhof9039
@justinkoldenhof9039 4 жыл бұрын
The uv glue is available in 2 types soft and hard they could have send the wrong type
@pleasecho2
@pleasecho2 4 жыл бұрын
Those active balancers work but don't expect each cell to be precisely the same
@weirdboyjim
@weirdboyjim 4 жыл бұрын
2020 project theme is "Fits on desk"? I messed up bad boss!
@JulianIlett
@JulianIlett 4 жыл бұрын
You've probably got a bigger desk :)
@urugulu1656
@urugulu1656 4 жыл бұрын
you know that measuring voltage and current at the same time can quite drastically screw up your readings? do you
@jobit_joseph
@jobit_joseph 4 жыл бұрын
Beware of Chinese INA226 modules , won't get accurate voltage readings with default LSB value. You may need to manualy measure the voltage , calculate LSB based on corresponding ADC value, average out and add this LSB value in the code . Current measurements on the other hand is pretty accurate up to mA.
@pdrg
@pdrg 4 жыл бұрын
If you can set A0 and A1, would those only be the two lowest bits, so 4 addresses?
@DavidGranz
@DavidGranz 4 жыл бұрын
TI used sort of a trick to allow up to 16 addresses... it's described here: e2e.ti.com/support/amplifiers/f/14/t/811151?INA219-I2C-Address
@DavidGranz
@DavidGranz 4 жыл бұрын
I should add that while the INA219 does support strapping for 16 addresses, the breakout boards do not easily allow more than 4 addresses. It's possible to strap to the other addresses, but resistors will need to be removed from the A0/A1 lines and patch wires added. It may be easier to use a I2C multiplexer.
@FG-Supercharged
@FG-Supercharged 4 жыл бұрын
The UV glue should not really be used as a glue, it's more like an epoxy. You would use it to cover things, say as an insulator or conformal coating, or else create things, like trinkets, by using it with a mold. As a glue it really is weak as you found out. It also often needs to be cleaned on the outside with IPA and then left in the sun for a few hours to fully cure. But for what it does, and how it does it, it really can be quite convenient and useful.
@House0fwax
@House0fwax 4 жыл бұрын
Those transistors are BC182 'L' ,Beware the pin-out.
@JulianIlett
@JulianIlett 4 жыл бұрын
Ah ok, I'll check that
@Mark1024MAK
@Mark1024MAK 4 жыл бұрын
Yeah, they are available in two different lead-out packages.
@tanjiro3285
@tanjiro3285 9 ай бұрын
Nicely explained ❤
@TristanGomez
@TristanGomez 4 жыл бұрын
I also just recently played with the INA226 (because the INA219 was sold out in my local electronics shops) :) I personally use the github.com/SV-Zanshin/INA library. I wanted to ask, is there any reason why you chose the INA226 over the INA219 ?
@originalmianos
@originalmianos 4 жыл бұрын
Got the same glue. I have a range of UV source wavelengths. It is uselessly weak. I have seen watchmakers use some type that works. If anyone knows one that works I'd love to know.
@RicardoPenders
@RicardoPenders 4 жыл бұрын
Why does it take you so long to finish the vocoder? Is the vocoder working already? And what does the vocoder really do? I'm struggling to keep interested in the thing, how long are you working on it about a year or so? Maybe it's better to work on your annual projects in the background and when it's finished you show one video of the complete process because it is taking way too much time.
@benbaselet2026
@benbaselet2026 4 жыл бұрын
Did Julian ever finish anything? That's not what we come here for :-D
@Anvilshock
@Anvilshock 4 жыл бұрын
What's so special about those "general purpose" transistors?
@Mark1024MAK
@Mark1024MAK 4 жыл бұрын
BC182L were a favourite of one of the contributors to the magazine that the Vocoder was published in. A lot of projects by the same author used them. Any suitable general purpose small signal NPN transistor can be used to replace them in most designs as long as you take account of the lead-out. And keep in mind that the same transistor was/is available without the L suffix but it has a different lead-out.
@johnflower8648
@johnflower8648 4 жыл бұрын
Instead of UV glue try using super glue and baking soda.
@weerobot
@weerobot 4 жыл бұрын
Safety Glasses..!!!
@maicod
@maicod 4 жыл бұрын
the spiders were lucky the pack wasn't Live ;-)
@gcewing
@gcewing 4 жыл бұрын
Maybe the terrible music is needed to make the glue set?
@davey2k12
@davey2k12 4 жыл бұрын
Your lights am interfering with the crap UV LEDs 😀 It's bit funny really what if the light can't penetrate all the glue think it's used for gluing transparent materials lol
@sazman2000
@sazman2000 4 жыл бұрын
oi oi julian , post bag time , wooo
@tisrettamton153
@tisrettamton153 4 жыл бұрын
Pronouncing the last sellers name reminded of Jerry Lewis doing LAAAADY!
@lunokhodtoy
@lunokhodtoy 4 жыл бұрын
16 Programmable Addresses
4 жыл бұрын
Alas this board only support 4 addreses, without cutting traces. To get other addresses you need to connect A0/A1 to SCL/SDA. This board has an pull down resistor on A0/A1, which would interfere with the I2C pull up resistors...
@lunokhodtoy
@lunokhodtoy 4 жыл бұрын
@ yes, I did check only chip specifications
4 жыл бұрын
@DIY Projects just look at the board. The IC supper 16 different addreses, but A0/A1 jumper pads have only 4 posible states.
4 жыл бұрын
@DIY Projects yes, the IC can be configured to 16 different addresses, but as I wrote before this board can only have 4 of the 16 without cutting some traces (or removing some resistors) On this board, the A0 and A1 pins have 10k pulldown resistors. If A0/A1 are connected to Vcc, the pulldown resistors do nothing more than wasting a bit of power. However if A0/A1 are connected to SDA/SCL the pulldown resistors interfere with the pullup resistors of the I2C bus. That is why this board can only have 4 different addresses without cutting the pulldown traces or removing the pulldown resistors.
@melikrasniqi1511
@melikrasniqi1511 4 жыл бұрын
Are you wearing a mask? (Coronaasliexpress) 😂😂😂
@LegacyMicro
@LegacyMicro 4 жыл бұрын
Didn't get the UV glue ad. That would have been great. Instead I get anti-gun political ads. Geesh!
@CursedMining
@CursedMining 4 жыл бұрын
Heyho! I just found you as you subscribed to my channel and I am glad you did! You cover a lot of stuff I am very interested in (LED nerd here too =D ). Cheers and thanks!!
@JulianIlett
@JulianIlett 4 жыл бұрын
Yeah, I'm really interested in the mining hardware, especially now you can buy them at silly low prices :)
@markflack9191
@markflack9191 4 жыл бұрын
i do not get youtube adverts. i have premium.
@JulianIlett
@JulianIlett 4 жыл бұрын
Probably wise - some of the adverts are quite annoying :)
@tomgeorge3726
@tomgeorge3726 4 жыл бұрын
I don't get KZbin ads, I have Adblocker.
@sdgelectronics
@sdgelectronics 4 жыл бұрын
@@tomgeorge3726 Support the content creators!
@brianhanson9367
@brianhanson9367 4 жыл бұрын
No....you have many more ads than is usual.
@ollieb9875
@ollieb9875 4 жыл бұрын
postbaaaaaag!
@TheKetsa
@TheKetsa 4 жыл бұрын
Yes, UV glue sucks !
@pdrg
@pdrg 4 жыл бұрын
Omg that's the stinkiest glue, smells of cancer, quite thin when I bought it. Just as useless too by the look of it.
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