ESP8266 Takeapart - Collin’s Lab Notes
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- Опубліковано 11 тра 2021
- Find ESP8266 in many forms:
www.adafruit.com/?q=esp8266&s...
Take a look under the shiny hood of an ESP8266 #adafruit #collinslabnotes
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Ah, was always curious about what lay under there. Interesting how simple it actually looks.
How does it perform without the cage, vs with it?
Probably just fine, most electronics shielding isn't meant to help the device they're in itself, but rather to help keep common consumer, police, etc. RF bandwidths free and comply with FCC standards.
Normally without the cage it work just fine, unless you are in the middle of a thunderstorm, that could disturb your signal whole bunch or be very near to a radio station.
What Facundo said
@@TuxraGamer how would a faraday cage help keep the emi inside of something? Isn't it the other way around? You cannot prevent the exit of EMI, but you can prevent the "ingress". That's how a faraday cage works. It allows everything to exit, but "nothing" to enter
@@HoloScope is it really though?
That mini hot plate tho... Took several screenshots as it is so adorable.
That's a Miniware MHP30 I think.
I kinda want one now??
But I think I want to build one
$94
@@AquaTech225not so adorable now
lol@@poisonouspotato1
This is the first video from Collin I've seen in years, ever since Make stopped hosting Collin's Lab. Glad he still is here.
That hot plate is so cute
YES I WANT IT SO BADLY
Thanks for this talented naration and explanation
"Inside, you can find SCP-196 itself."
You could probably get paid to do some narration on the SCP Fiction
That's one heck of a nice telephoto lense 🙂
Not telephoto, macro lens.
Macro lenses allow you to get close.
Telephoto are used for objects which are far away.
So... crystals? Magic 🙌
Everyone knows electronics run on magic. Why else would they stop working if you let out the magic smoke?!
It's so nice seeing Collin's work again, reminds me of his days at Make magazine :)
Electronics and taco bell are very similar, the same 11 ingredients can make 15,000 different products
I love this sentence! thank you smm
Very clear and concise video
love the short format
To this day, I'm still baffled that someone taught a few pieces of plastic and metal to THINK.
things that were laying in the ground....🤯
Think is an overstatement. It's merely a bunch of transistors going ON or OFF and calculating stuff that way
We did the thinking, and then we told the rocks what to do. We did teach the rocks how to do maths though.
The sad thing is that I'm not sure people have spent a lot of time thinking about what they want from life and the universe now that they taught the rocks all these cool tricks.
@@superchromaby “rocks” you mean silicon, gold, etc?
@@BigTurtleManeI think so
If you want to do OTA or "over the Air" programming (no more USB), you need to also remove the 8 pin, 1MB memory module and replace it with a 4MB. Reflash, and your good to go.
Or you could just buy the module version with 4mb flash
Edit: Just checked ESP-12S (shown here) comes with 4MB
@@thunderb00m I liked the challenge. Bought 10 memory ic's for $3. The 07 has a remote sma pcb type antenna plug that I needed. Yes, true - the '12 came stock with 4M.
Been there, done that!
You can also see where you lifted an inductor near the antenna trace when you removed the shield and didn't nudge it gently back into place.
Please do esp32
It's called RF Shielding.
He basically said it. He called it a "faraday cage", which is the same thing
What happens if it's removed
What happens if it's removed
Beautiful!
I mean that's not really a secret because of the official documentation, but it is really cool to actually see it.
Thank you. Be prepared.
Very cool. Thank you
Insightful!
I have some generic boards with no plate so the esp8266 chip is exposed. Anyway, I love these shorts, very informative. Keep up the great work!
Esp 8266. A hackers bestfriend
I bought one of those little Wi-Fi cards on Amazon but it's somewhere in my room now I don't even know where I put it
شكراً لك ❤❤
Fascinating.
"A timing ceystal"
I cant getbover the fact everything is powered by essentially magic crystals.
Wild af
Man recently i am having so many issues with new boards... they're becoming impossible to solder without damaging them
Inside we find some janky soldering too
thank you so much
So basically, "Here be dragons".
Thanks
I don't think the purpose of the tin box is to block outside radio frequencies, it's to stop them being radiated out from what's underneath it. Quite the opposite.
It’s both
@@mattmurphy7030 Well actually no it isn't. It will stop received EM radiation, but that isn't going to be a problem for it.
It's been FCC certified and the key thing you are trying to stop here are radiated emissions.
@@deang5622 wElL aCkShUaLlY,
Nice video
This dude is the coolest nerd that will ever exist
I would've loved to see the the timing Crystal opened up
Sooo interesting! 😂 Man I’m nerdy af 🤓
It's to keep in the rf radiation inside, so it can pass emission requirements
And to keep the rf radiation from outside coming in!
@@rallokkcaz no, the chip will not have a problem handling a few v/m radiation from the outside
I was thinking the same thing. With the wifi antenna that close to all those components, I would think the shielding would be to keep the wifi signal as clean as possible by blocking the noise from the CPU and other components.
Yes finally someone did it!
I found the old music you used very odd, it was absurdly dramatic or mystical. Now that that music is gone I miss it. I came to associate your voice with it, and now it feels like a long time friend has left. Lol
EPIC!
Use iron to de solder pcb make sure the surface of iron made out of ciramic meterial for better operation
Before i knew about existence of hot plates, I took an esp32 apart using a razor blade
I want to put 1 kernel of popcorn on that hot plate and watch it pop !
COOL
No, its not a Faraday cage, its termed a shield. Faraday cage has special meaning in physics and electronics ... but the avg layman has coined and misued this term.
The metal plate this there, for the reason of Regulations about Transmission devices requiring a shield, this is why in your PC 🖥 you will see exposed components not shielded unless there is a reason or requirement for it.
This is how you can tell a non compliance chip set (RF transmitter for instance) if it Doesn't have the metal shield as with many cloned Chinese knock-offs.
Could you upgrade the flash then?
I would bet but I doubt you would need to upgrade it
@@co9681 It depends. Some space constrained projects could maybe benefit. I haven't run into it myself though but on some portable led projects I've come close.
@@Morberis portable led or LED
@@miniwarrior7 ... LED ...
Yeah it being 25vq32 (4mb), some ship with smaller yet; you should be able to just bump it up to a 25q128 (16mb).
Why needed? Depends. It is easily a dedicated web server for something like a sensor or control or other, and you can burn a lot of space with images. Imagine it being a weather station or something of a kind. Though other solution is to host static resources externally on the wide Internet. You can also easily drive an SPI display with it, and then you probably want uncompressed images stored in flash, also very space hungry. It's cool to think outside the box, or inside a several megabytes larger box as it were. The flash chip operates in Quad SPI mode so it's very fast.
The chip does support the fast 4-bit SD-card interface for bulk external storage, but not sure whether any specific board makes it available.
Come on man .
Everyone knows that little gap is for the magic blue smoke to come out. 😏
Yup it’s for a little piece of metal to talk to other little pieces of metal in their secret language that only has 2 letters
❤
Where did you find a mini hot plate?
www.adafruit.com/minihotplate
mini hot plate ❤
“From our friend _Mini Hot Plate”_ Um, I’ve been burned way too much in the past to believe that statement
Wow, that Mini Hot plate is nuts, lol... And all the comments about it! At over $100 for that tiny guy, thats on the pricier side... How long did it take to fully heat up the ESP tho?
Hi
What is the name of the device where you installed the module?
Always thought the chips is what you see
the more i know 😁
Isn't it actually the other way around? I.E. the shield isn't to protect from outside frequencies, it's to protect from the outside frequencies? Maybe it works both ways or I'm just wrong, but I'm pretty sure it's to stop the chip from broadcasting on emergency/reserved frequencies. The FCC is real big on that
Beautiful and modern witchcraft
Why is the function of that Plated armor ?
This flash memory is additional memory or total memory?
The RAM is inside the main chip. It has no programmable storage capability at all, the complete flash is on the external SPI flash chip. The integrated bootloader transfers a 32kb blob from the SPI flash into RAM and runs it, presumably there's important wireless functionality in there, and the user application is loaded from SPI flash into RAM in small chunks as-needed, supported by a 32kb cache in RAM to improve performance.
If it is shielded it is because without shielding it suffers RF interference
👍🏻
You can buy these without the can lol
OHHHH
did he say time crystal??
It got removed by double sided tape
I thought they got rid of the crystals
If the flash is SPI, does that mean you can pull the compiled code from any ESP8266 device?
Yes? Why wouldn’t you be able to lol
@@mattmurphy7030 because you can't on most microprocessors. I assumed the same would be the case for these.
@@shaunclarke94 “most”? Yes you can lol. I dump code from vehicle ECUs that are explicitly designed not to be able to do that.
@@mattmurphy7030 what about your standard Microchip or Atmel MCU's?
It was my understanding of they were protected you were out of luck, and since the flash is internal you can't exactly just read it externally.
Can these be reprogrammed?
Something like the Wemos D1 Mini can at least, which is 8266. Oh, and NodeMCU as well.
Those are the only two I've played with however.
Haha WiFi chip called ESP wonder if that's a coincidence or named on purpose
Abbreviated from company name Espressif. The company is Chinese, I think you're giving them a little too much credit.
take an ESP-01. It doesn't have a metal cap but has the same components. There is no FCC approval for this.
There is. The regulations say your device should emit too much “garbage”. You can either stop your device from emitting said garbage (so you don’t need a shield), or add the shield to block it in
you could have just bought an ESP8266 without the cover. you have to pay extra to get the cover on in.
what needs to be changed or added to the sketch in order to register two access points (that is, two WiFi networks)?
If one doesn't work, will it connect to the other by itself?
I'm pretty sure that gap is because if the tin was sealed to the pcb then it would get damaged when the esp heats up and increases the pressure under the tin
No, it's to keep the impedance matched so you don't get reflections.
@@D4100N ah I see, I figured it would be the same reason as a desktop cpu but nvm. Thank you 😊
Mr
Never get any iot device with an esp8266
why?
@@tennicktenstyl those light bulbs that use esp8266's can be loaded with deauther firmware pretty easily. If someone could get in they could block devices from using internet
weak
awsome