Julian, The USB socket is there because many parts of the world don't have mains power but do have mobile phones that need charging. Solar is their only option in many cases or they have to pay someone to charge their phones. Thanks for the great videos.
@gravelydon7072
6 жыл бұрын
And it can be used to power up something else like a transmitter to send data out over about the controller's state using an already made off the shelf item.
@tobortine
7 жыл бұрын
I suspect the OLED in a big box labelled "Gift" is to confuse Her Majesty's Customs and Excise.
@mikeselectricstuff
7 жыл бұрын
There are some 8-pin PICs that will run at 32MHz - 12F1822 I think from memory. BTW that top-quality-tools seller just scrapes Farnell's website and adds a huge markup.
@freetrailer4poor
7 жыл бұрын
11.9 volts on your 12V battery needs a charge. 12.6 is near full.
@GeorgeBryantLuxtylo
7 жыл бұрын
Hey, I got the same kit for Sinterklaas (Dutch secret santa) and put it together yesterday! Don't worry about forcing the motor under the clip more than it already is - mine looks the same as yours and it works fine
@jlucasound
5 жыл бұрын
Thank You for saying that; "My Computer is Running Slow". I thought it was mine! I know, we all know, that you know, how to fix that. Me, not so much. Love Your Videos, Julian!! I am learning exponentially. And I am 56.
@jimthvac100
5 жыл бұрын
I have that same USB charger in the acrylic case It works great. It has a blue LED light that is is kind of bright at night.
@cbm80amiga
7 жыл бұрын
Julian, OLED displays at Aliexpress are available now even for as low as 2.6USD. Regarding the size of your higrometer you can consider using Digispark modules with ATTINY chip. I remember that tested 2 different modules about year ago and should have videos on my channel. I used one of them for LEDMatrix display and second one for USB remote controller. Both of them have emulated USB so it is additional advantage because you can program them directly from PC and also powering from any USB supply is very convenient. And price was also very decent because year ago they were about 1.2-1.3USD
@vonries
5 жыл бұрын
I know this is a rather old video to comment on, but I just noticed something. Rather than waiting to open a bunch of posts all at the same time and wondering what is in them or taking a flashlight (torch) to try and figure it out try this. Just film them as they come in the mail. Then you can just take the different clips add them together for your post bag video, and you might find it saves you a lot of time doing post bag videos as well as the frustration of hanging on to them unopened.
@stefflus08
7 жыл бұрын
I've stopped torturing myself with poking fingers around looking for hot parts and started swabbing a Q-tip with isopropyl alcohol around instead. -It'd even get into that acrylic box!
@gravelydon7072
6 жыл бұрын
In case you haven't figured out why a red power button is there, it is so you can turn on your load in most cases. Or turn it off overriding the onboard controller.
@amanmittal4232
7 жыл бұрын
Always waiting for ur awesome videos...keep it up
@TheDutyPaid
7 жыл бұрын
The video annotations still work even if you have them turned off.
@BeatboxNorwich
7 жыл бұрын
Getting that USB block for sure!
@RaviJani
7 жыл бұрын
love the postbag videos
@hamandwine
7 жыл бұрын
While you stumble upon the package marking as "gift"... In Germany the word "Gift" means poison. However the customs are aware of the fact, that it could be English and the content isn't problematic... At least as long as you don't sent "Gift" as a gift...
@JerryEricsson
7 жыл бұрын
Really like that buck converter, I can think of a couple of places to mount that in our RV, right now I have lots of wall warts serving power for all sorts of toys I have built for our rig, that could easily replace many of them right off. Perhaps next summer, I don't buy off Ebay over the winter months while I am in the desert as my shipping for Ebay is to South Dakota, and I don't like the idea of my purchases sitting up there all winter waiting for me to arrive. Plus the wife would indeed kill me if I had a ton of crap waiting for me when we return from our snow-bird migration. Thanks a million for the videos, I look forward to seeing them when they come available. Even got it now so I get an email notice when you post, didn't have that for some time till someone (was it you?) showed how to turn that feature on.
@sams6090
7 жыл бұрын
Why do they scrape the components? Are they trying to hide what they are?
@mitropoulosilias
7 жыл бұрын
yes, like they want to own the idea of combining parts to make products.. stupid but true
@sams6090
7 жыл бұрын
mitropoulosilias that totally sucks.
@Polite_Cat
7 жыл бұрын
it seems really weird as if they think it will stop someone copying their design, however they almost always do an incomplete job of scraping it off, you could buy a bunch of them and get maybe 1 number at a time that way if you really wanted, or easily just see the number online like julian did. it makes no sense. it is literally someones job to scrape off the numbers on those components. it makes no sense. why not all the components? could someone not even take a guess at what it is and use a suitable replacement? i dont understand it at all.
@sams6090
7 жыл бұрын
kekejojo1212 I think it's pretty ironic considering how most electronics/circuit boards are manufactured in china, to have those companies scrap off any identifying markers in the hopes of keeping their design a secret. I mean china's only job in the world is to just steal IP. Just laughable to see the country who steals designs from everyone try to protect their own designs. Damn hypocrites. I really cannot wait until 3d printing gets so advanced that there's no limitation to what you can print out. That'll be nice. I just imagine going to a place that looks like kinko's and other similar companies that used to be everywhere, but instead of copies or film you just submit your design and they print it out for you.
@Polite_Cat
7 жыл бұрын
that sure would be cool, but if you have to actually leave your house, then one click one ebay for 99 cents is much more preferable still. 3d printers would have to be super advanced to be able to print such small components like LEDs and transistors, IC chips, etc...i dont think we're there yet.
@raymondheath7668
7 жыл бұрын
I'd be interested in the ideal diode video and application. Thanks for great vids!
@gamerpaddy
7 жыл бұрын
have you figured out how to use the cell impedance function of the iSDT charger?
@jimthvac100
5 жыл бұрын
Did you ever test that solar charge controller to see if it is Pulse width modulation or not?
@TECH_GEEK10
7 жыл бұрын
@Julian Ilett, You need to turn the face tracking off when you use the webcam. The constant moving is making me dizzy.
@JulianIlett
7 жыл бұрын
I quite like the face tracking - it means I don't have to worry about being centre-frame.
@TECH_GEEK10
7 жыл бұрын
All I see it doing is zooming in. To be honest it looks much worse when you are being moved all over the screen, compared to how it would look if you were a bit off center. Not saying you have to change it, just putting my opinion out there.
@expansiongames
7 жыл бұрын
i agree just show the full frame of the webcam the zooming is annoying and may help reduce some load off the pc
@koz
6 жыл бұрын
I'm sure I'm not the first to ask, but why on earth did you not get that speck out from under the screen? It was right there. But you left it. Arrrrghhhhh..... ;)
@dirk-janfaber
7 жыл бұрын
Why not ditch the arduino and switch to an esp8266? It is smaller and might fit better (and can also be programmed with the Arduino IDE).
@maicod
7 жыл бұрын
I DO like the yellow ones.....sliced it....
@JerryEricsson
5 жыл бұрын
Had to laugh on that OLED that said it was white but turned out blue. I received one like that a few years back, and when I commented to the seller, they said they didn't even stock the blue OLED's and promptly refunded my purchase! Things sure do get interesting when dealing with those in China who have a very limited vocabulary. The last week, I got in some MC102 JFET's that were, in fact some N-channel BJT according to my tester and in now way behaved as a JFET which I use to build ghost detector toys for my niece who is into that sort of thing. They at first urged me to wait another week for the package to arrive, and when I asked them to find someone who spoke English to read my complaint, they offered to resend, or refund. I replied that if they could assure me getting the proper product, I would take a resend, however if not then a refund. I received my refund today. The reason I had ordered them from that outfit was that they were selling them for 20 for 8 bucks, where everyone else was selling them for a buck or more per transistor. So I took the refund and ordered 10 Motorola brand to see if they are better copies then the Fairchild fakes that everyone else seems to be peddling on Ebay right now. Sad to, as those little Jfets are great fun to play around with, they are so very sensitive to EMF.
@sams6090
7 жыл бұрын
Hey can you update your postbag playlist? I like to watch those to see what cool stuff might solve a problem I have with a project or things I didn't even know existed. Your playlist only has 20 or so videos in it but by the number count you have 70+ post bag videos. I wanna watch them! Do I have to just make it myself by delving into your video history and saving it? Or is there a way your video manager can set that update into action?
@zanedelorean9740
7 жыл бұрын
20:00 why not a 5v USB for charging phones etc or 18560 batteries. very handy I think
@amanmittal4232
7 жыл бұрын
Julian can we use use a buck converter to charge a lead acid battery by using a diode on the +ve output of the converter??
@JulianIlett
7 жыл бұрын
Yes, the diode will protect the buck converter. Use a CC CV charge sequence, continuous trickle charge is fine.
@algorithmae
7 жыл бұрын
If "smd " doesn't work, I've found that "sot23 " also tends to work
@TRS-Tech
5 жыл бұрын
Hi Julian. A quick question, why do you use the .com Ebay instead of the .co.uk site ? I am enjoying your current projects, would be great to see you pull apart more of the charge controllers. Keep up the work with the NeoPixel's to. All the best. Stuart
@panKrysha
7 жыл бұрын
Can you send me link for those resistor USD loads?
@Martin-uf4ut
7 жыл бұрын
hi Julian. on the 4 USB device the different ports are set up differently. can I send you a picture from the eBay listing I have purchased one from?
@JulianIlett
7 жыл бұрын
Hmm, you're right - the two ports near the output capacitors have an RZC7512 intelligent identification IC. The other two ports appear not to have anything connected to D+ and D-
@Martin-uf4ut
7 жыл бұрын
Julian Ilett shorting d+ d - is comparable with most devices is what it says.
@robviolin1
7 жыл бұрын
May I ask a question? Can one charge several batteries in parallel without having to worry about balance charging ?
@renxula
7 жыл бұрын
Yes. Parallel things will be at the same voltage.
@robviolin1
7 жыл бұрын
I have ten 18650 batteries and you are saying I can charge them all together as long as they all are connected in parallel ?
@renxula
7 жыл бұрын
Sure. Multiple cells in parallel act like one large cell. It'll just take 10 times longer to charge those, unless you can increase the charging current.
@superdau
7 жыл бұрын
Just don't hook them up in parallel when they are at completely different charge levels (one full, one empty). After that it's fine. I would also not multiply the charge current by the number of parallel cells So if you have 10 cells that could be charged with 1A each, don't use 10A to charge. You can do that, if all the cells are the same (model, capacity, age, condition), but if you are mixing different cells I'd leave some safety margin and only use 5A or so just in case some cells act up or have bad contacts or something like that.
@robviolin1
7 жыл бұрын
superdau - thanks. Appreciate it.
@bruhdabones
7 жыл бұрын
Seriously why aren't you gaining subs you need at least 100k. I also buy a ton of cheap Chinese things from ebay like you do. You inspired me to do that, and its fun to see what $1 buys you.
@kose2ik
7 жыл бұрын
Need more details 12:06 "DC-DC 7-60V To 5V 5A 4US". USB data connections resistors (schematics) (is diffrent USB ports resistors or not or all chast only 5v without data connection resistors , (FAST)Chargign: Android, iPhone, ... ) (use GoogleSearch "usb charging resistor" when need to know what I mean)
@Luke-san
7 жыл бұрын
Take a look at this one www.banggood.com/Matek-DC-DC-USB-Power-Adapter-LiPo-to-USB-Converter-6A-4Ports-Black-PCB-p-981253.html Have one of them and recommended them to others which also use it. Really high quality pcb, materials and doesn't even get warm so high efficiency. Also has a manual which makes sense instead of guessing.
@seth4413
7 жыл бұрын
Hello Julian! How do you get the postbags, are you ordering eatch item or are you a subscriber somewhere that sends stuff? Great channel!
@JulianIlett
7 жыл бұрын
I choose each item myself :)
@ThatGuy-nv2wo
7 жыл бұрын
Why does I2C use A pins? I thought they were analogue only and I2C is digital? No?
@SpeccyMan
7 жыл бұрын
On a micro-controller there are several options per pin as seen in the relevant data sheet. It is usually a trade-off as to how you assign them for your project.
@ThatGuy-nv2wo
7 жыл бұрын
Nick B Are you saying the A pins are digital or analogue?
@SpeccyMan
7 жыл бұрын
+That Guy, I am saying read the data sheet.
@km5405
7 жыл бұрын
no what are you doing? don't turn it on... take it apart!
@-yeme-
7 жыл бұрын
the other kind of pro mini might fit better? the one with all the components down one end and the two rows of connections at the other. they have gnd vcc a4 and a5 all together at the edge (ebay item 131573185472)
@JulianIlett
7 жыл бұрын
Ah yes, I might get one of those :)
@JulianIlett
7 жыл бұрын
2 purchased - thanks for the idea :)
@donpalmera
7 жыл бұрын
Never buy Microchip stuff. Get them to send it to you for free via their samples program.
@TheRealThisIsAlex
7 жыл бұрын
Nice
@nor4277
7 жыл бұрын
.ca. that buck converter be used to charge mutiable items
@Polite_Cat
7 жыл бұрын
i think the chinese pay for postage by the weight, per gram. so it might have been roughly the same to send that box as a small poly mailer. maybe they ran out of them or something and used a box just to get rid of it. also, julian, when you play with those puppets..have you been feeling lonely lately mate? ;-)
@nightmareinaction629
7 жыл бұрын
that charge controller is 11 dollars wow
@illshootyou5199
7 жыл бұрын
Im building a garden shed/workshop next week with my dad and I want to set up solar on it's roof. It will also have mains power fed to it but I want to have solar running the lights and other assessories. Would you recommend this entry level solar charger? And also whats the minimum recommended wattage for an entry level solar system? PS... love your videos all the way down here in New Zealand! Keep it up!!
@JulianIlett
7 жыл бұрын
Certainly start with a cheap solar charger - but you may want to change to a PWM unit later. If you get a lot of sun, 30 or 40 Watts may be enough. Here in the UK I would recommend at least 80W.
@vgamesx1
7 жыл бұрын
It all depends, what type of lights are they? LEDs? how many lights do you have? How long do you want the lights and anything else to run? So for example, let's say all I have is 10W worth of lights I want and I'll at most run them for about 4 hours, to get that I'll need roughly 40Wh worth of batteries (80Wh if Lead-acid and use half of it) but don't forget that you'll lose a bit of capacity over time so you should plan on getting at least an extra 10-20% worth of capacity if possible, now that you know how much power you're going to use, now you can calculate how much power you need to generate, during the day you'll only get roughly 4 hours of good sunlight with a panel in a single spot, so you'll need to generate at least 10W of power but again with solar you should expect to overestimate what you need since it won't always output the full 10W I require, then we also need to account for variables such as daylight usage of the light or days without sunlight, so yeah in my example 20W or 30W would be plenty. Basically get slightly more battery capacity than you think you need and get about double the solar power you'll need to generate.
@vgamesx1
7 жыл бұрын
Oh yeah about the charge controller, it should be fine although personally if you're cheap or for beginners, I prefer this one: r.ebay.com/sA0Esj It allows you program some of the charge settings on it, such as the charge voltage and cut off voltage.
@illshootyou5199
7 жыл бұрын
Could you recommend any PWM chargers on Aliexpress instead? We are just starting summer (albeit a very wet start) and we usually have very intense, long sunny days which eventually lead in to a wet and overcast winter. Would a wingle 100W panel be overkill? Or should I start with a 50W panel and add another later on. Cheers again
@illshootyou5199
7 жыл бұрын
In terms of lights and things I want to power.... unsure yet as its my first shed lol not really sure whats going to be in there yet... but I would like to power some 12v LED lights and maybe a few ESP8266/Neopixel strips for long periods. And also charge my 12v electric lawn lower and other electric garden tools. I will be creating separate relay switches to turn things off automatically etc... and will have mains lights wired in to as there will be power tools in there. I basically want to get what someone like yourself would recommend as a decent starting point... I dont want to go to low and have to add later.
@Jimnymudhunter
7 жыл бұрын
dont post in UK but has UK in profile name... logic 😒
@expansiongames
7 жыл бұрын
still using the acer revo pc?
@JulianIlett
7 жыл бұрын
Yeah, it's not really up to the job :(
@expansiongames
7 жыл бұрын
you may like someting like an intel NUC you can get a decent cpu in that
@maicod
7 жыл бұрын
+Julian Ilett hope Santa is kind to you this year or were you naughty :)
@tyttuut
7 жыл бұрын
Try building something! It would be fairly easy to get together parts for a decent machine for $500 (or about 400 GBP). It really isn't as hard as it sounds, especially for a basic machine.
@expansiongames
7 жыл бұрын
but i think julian like the small form factor.
@yulu1256
7 жыл бұрын
講解的很詳細!! 讚!
@darkwolfe6986
4 жыл бұрын
Where are the puppets? :(
@jonathancrossley6803
7 жыл бұрын
I2C is open drain just pull up to 3V3?
@JulianIlett
7 жыл бұрын
The OLED module already has 4.7k pull up resistors to 3.3V - but if I connect another device which uses level shifters (like the humidity sensors), there are resistors which pull up to 5V. Normally I don't worry too much about this stuff.
@jonathancrossley6803
7 жыл бұрын
If you really need to use those level shifters pulling up to 5V, then check the OLED can with stand greater than Vdd on the I2C pins - you almost got that far in the data sheet, there's usually a clue regarding ESD sensitivity (the open drain pins may not have ESD diodes to Vdd allowing them to go higher than rail, but consequently more susceptible to ESD damage).
@jonathancrossley6803
7 жыл бұрын
OK, so I had a quick scan through the OLED controller datasheet and I can find no evidence the I/O will withstand >Vdd+0.5V. In this situation I'd go with a 3V3 Pro Mini, direct drive to humidity sensor and OLED, and power it from an 18650 rather than a PP3...just a thought
@superdau
7 жыл бұрын
Julian, you want to look at the "absolute maximum ratings" if you want to know what breaks your stuff ;) . The "DC characteristics" just tell you what the chip will see as high/low aso. The Vdd+0.3V maximum input tells you there are internal protection diodes and where they start to conduct. Some datasheets list the maximum current they can take (this one unfortunately not). Even if they list a maximum input voltage, it is mostly fine to go over that voltage as long as you limit the current. The pins will conduct at over 3.6V in this case. With a pullup to 5V that would mean 1.4V on the resistor. The pullups on the board don't matter in this case, because they only pull up to 3.3V. For arguments sake let's say you have some 4.7k 5V pull ups somewhere else on the bus. 5V-3.6V = 1.4V, divide that by 4.7k and you end up with 0.3mA through the diodes. Times that by the 0.3V drop of the diode and you got about 0.1mW of power dissipation in the protection diode. So *the IC should be fine even with pullups to 5V*. *Why do you want a level shifter non the less*? Because the 3.3V pullups can pull *down* the I2C lines towards 3.3V fighting 5V pullups somewhere else and the protection diodes inside the IC will clamp the I2C bus to a maximum of around 3.6V even harder. So if other devices aren't fine with that logic level anymore they won't work. In this case the level shifter isn't there to protect the OLED driver, it's there to keep other devices on the bus working.
@irfanaslam5859
7 жыл бұрын
have you used raspberry pi if so make a video
@antonyalen2745
7 жыл бұрын
hi Julian in alen from kenya
@antonyalen2745
7 жыл бұрын
and i am a huge fan of yours😊😊
@malaykhare245
7 жыл бұрын
hey jullian BIG fan from india can you make a one day project (like you did with arduino ) about lab bench power supply with your buck ,boost and some bit of arduino coding, to make a simple lab bench supply again just an idea ..... BTW great job keep more projects coming really fun to watch them
@iceberg789
7 жыл бұрын
nothing to get there, he already has so many power supply modules with displays and so many functions.
@malaykhare245
7 жыл бұрын
iceberg789 no what I meant was to simplify the function of modules with arduino
@blainethepilot
7 жыл бұрын
I'm opening a bag of china Ebay goodies wile watching this video. WooHoo
@robh1908
7 жыл бұрын
lol what a great idea having the puppets.
@NivagSwerdna
7 жыл бұрын
P=Plastic DIP
@xavierayayaell546
7 жыл бұрын
I hate the puppets :(
@MrJozza65
7 жыл бұрын
I love the puppets :)
@JulianIlett
7 жыл бұрын
I'm ambivalent :|
@MaxintRD
7 жыл бұрын
Xaviera Yayaell - I prefer Julian without puppet. The kit-build outro is a much nicer bonus...
@gizzymoee
7 жыл бұрын
Maxint R&D agreed this is much more unique, and entertaining I just wish he did more than one piece. Such as 5 for example I mean these kits aren't that expensive and at his rate it'll last at-least 100 videos.
What's with the puppets ? After watching many of your reviews, and informative post-bags, I am bemused by the not funny puppets. They arn't funny and I can't understand why a man of your intellect would find it to be. You have spoilt a good channel and for this reason I am unsubscribing. Yes, maybe I am only one, but there we have it.
@JulianIlett
7 жыл бұрын
Just a bit of fun. A while ago I experimented with different desktop textures. I may start featuring different Christmas decorations in the next few videos. I like to experiment. The puppets may not live forever - please come back when they're gone :)
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