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Great, short and clear explanation. ❤❤❤

Your transition thumping sound had to be the most distracting sound I’ve ever experienced in a CZcams video. Completely unnecessary.

There are no safety certifications in the United States! There is only voluntary product listings by a NATIONALLY RECOGNIZED TESTING LABORATORY. (NRTL). UL/CSA/TUV etc. Some cities require a listing for products offered for sale in their jurisdiction, but very few do. If you’re an employer you are legally required to provide your employees with products that are NRTL listed. But you can sell an unlisted product to whoever you wish. Lord help you if you sell unlisted products in the United States and it hurts someone or burns down their home, you will certainly be seeing the inside of a court room. A big distinction between FCC and Safety is the FCC is legally required and must have certification BEFORE you can even offer it for sale. When you, as an individual, buys products from China (for example) for resell you are the importer of record and are liable for the product, as if you manufactured it. I personally would never purchase (import) products that are powered from the mains (115/220v). Imagine when your insurance adjust is sifting thru the ash’s of you home and determined the cause was a gizmo you bought from China… guess what that’s going to involve some serious discussions with your insurance provider. Insurance companies are your friend when collecting payments but when a claim comes in they bring out the back room boys to legally look for ways to deny your claim.

Great video! It helps me get a good beginning understanding of how to get going. Question, if we aren't adding the USB-to-UART interface, can we still use Arduino IDE to program the board? I would guess not since from my research it seems Arduino IDE does not support that.

I have a project idea of smart irrigation system in which I want to display Temp, Humidity and soil moisture level and after a certain minimum level of moisture i want to start DC water pump to maintain moisture level so what is the best STM for this?

I would love to see another battle where both designers receive the exact same schematic, part list, current and voltage constraints, board size and mounting scheme. Anyway, thanks for sponsoring this, it reminded me of the old 'PCB Benchmark' contests.

I've found that board mounted USB ports creates a failure point in that when a cable is plugged in and gets bumped it has the risk of breaking that solder connection. Is there a way to "ruggedize" board mounted ports to avoid this, or is a jumper with panel mount the best if this is a concern?

Ive been trapped in pic32 land but it looks like st has a better set of offerings.

Do I need to state somewhere that the product we sell as a manufacturer is part of a sales test? Can I find some more information about the sales test? I think i will finally sleep well again after watching your video! 😄 Thank you so much!

just awesome, mister great insights shared thank you

Interesting video! It would be cool to reverse engineer Seeed Studio Xiao BLE/Wifi and it's expansion pack so that people don't have to wait for it to be available. The product I am attempting to design only needs a BLE chip, BLE antennae , USB-C, and a servo controller (4.6-5 Volt options) running on a single battery source. I do not know how to make PCB boards and my electronics knowledge is very limited. I think it would be of great interest to noobs to have a resource with ideal examples used to achieve basic requirements for new age PCB boards such as BLE/Wifi chips, antennae, power source, servo controllers, and typical ports. Also, noobs would need to know how to connect all of those examples together on the PCB. Open source PCB software would be ideal to for noobs. Just fruit for thought.

These are basic pcb layout rules, Ive seen lots of mistakes too, its more a case of lack of understanding of how electronic components work and interact. One big problem I often seen is poor creep-age clearances between mains and SELV supply found in consumer products from China.

It's not battle between kicad and altium. It's battle between two engineers.

Thanks a lot for this video! I have been so confused about which board to order. I am a maker, and i love building electronic projects from the internet and customizing them.

Why no Diptrace🤔. One could easily make a two layer pcb(seven layers possible with no size limitations even in the time limited trial version-that does not need internet activation🤫) , inhouse with the dxf export capabilities. Also it is far easier to create a custom pattern in minutes from a cad model(dxf import), or digital calipers. Could easily convert any Eagle libraries and pcbs with the free scripts.❤️👍

The straight to the point delivery is much appreciated! Can't wait to watch all your videos.

There is what I want and there is what I need. This video didn't tell me what I wanted to hear but it certainly told me what I needed to.

sorry, but I wasted my time watching this, you would be better talking about microcontrollers. but just to close this topic for you and for everyone who might be interested in selling a product: 1) humans are efficient creatures , they don't like to waste or lose 2) a leader is person who can provide a benefit to other humans (many of them); 3) all the leader does, it is optimizing the resources of others 4) a product (or a service) is a way to optimize resources. 5) leader is paid for the amount of optimization he did to his followers Conclusions: 1) If your product doesn't optimize or produce benefit to people, you won't ever sell it and no investor will get interested, 2) if you can't make a useful product, then you are bad at optimizing your own resources. 3) a person can become a leader and optimize resources of others only if he learned to optimize resources of his own 4) your success in business directly depends on the usability of everything you do to other people and the amount of optimization you can provide for them. As you can see, investors are not even in the list here. Meaning, that if you are on the right track, you will never need external capital. If you aren't making enough money it is because what you do is not that useful for others. Example, WalMart's owner became billionaire because he selected the products of highest quality at the lowest price, so he saved you hours of time, that's why you buy stuff at Walmart. Now, I am omitting the execution part here (because if you lack discipline, you will never achieve anything) , I am only talking about the escence.

Why does no one talk about PROTEUS?

Brilliant guide, exactly what I needed to rent myself with the ESP32 series

You are forgetting an important topic, namely licensing. If you use libraries with for instance a GPL license you cannot use that in your commercial product. You will need to write your own replacement. Some licenses require you to publish your code as open source as well.

Thanks, that cleared up some uncertainty I had about which STM32 model to use.

@PredictableDesigns What if my project requires touch display, camera module and few sensors? I have a use case that requires capturing video while taking few sensor measurements. Can a microcontroller do concurrent tasks of streaming a video on display and also taking sensor measurements or performing some tasks such as fingerprint reading/comparing?

Excellent!

KiCad for sure :)😂

It is very confusing to see the NC pins of the diodes assembly going out of the corners of the component. I'd avoid put pins in this way.

The comparison depends on the designer's skill, not so much on the EDA, but the fun would be to see a BGA design and the use of interactive routes on high speed lines or the PDN and EM power analysis on the PCB. Best Regards from Argentina

I really think we need more of this kind ... like a competition 😂

Me literally using Eagle 7.2.0 righr now 😐

what package has the lowest power consumption?

I am for KiCad, but never underestimate that the guy using it is younger (means faster) than the other guy, regardless of the experience of them both

Thanks john great video as always. For any hobbyists out there reading this who plan to hand-solder or hot-air their ESP32 module to a custom PCB, I was an idiot and learned too late that if you select the "MINI" version (like an ESP32-S3-MINI-1U), all the pads are underneath the chip and not visible around the outer edge like the non-MINI modules (there's literally a picture on the first page of the datasheet *facepalm*). So hand soldering is kinda out of the question for minis (At least the ESP32-S3-MINI). If you intend to use hot air, you won't be able to visually confirm the melting of the solder paste or if there's any shorts or non-soldered pads (cuz the pads are under the chip and not visible) and it was a problem for me. Your results may vary. So I changed to a non-mini version: ESP32-S3-WROOM-1U

KiCad Wins..!!!!!

EasyEDA Pro would be 10x faster and get a better design then this, i feel like these guys environments are not set up correctly and they are not that comfortable with their dev environments. Also I am not seeing the recommended 22 ohm resistors on the D+ and D- lines, also using a USBLC6-2SC6 for ESD is a much simpler solution then anything else. Also usually 3 decoupling caps for the mini modules as well as bulk capacitance for the USB power supply usually 47uF or more if you can fit it

Absolutely....RF antenna design is complex because of several factors, impedance matching to minimize signal reflection, achieving desired radiation patterns, and ensuring wide bandwidth without losing performance. Also, we must account for polarization, size constraints, and material properties all the while maintaining performance across varying environmental conditions. Interference management and isolation between multiple antennas or electronic devices further add to the complexity. I can attest that mastery of electromagnetic theory and practical engineering skills are totally essential to navigate these intricate issues effectively... Lots of my designs have failed but, those that prove themselves exceptional performance make up for the designs that fall flat.

why didn't you mention slime vr ?

Hi new to your channel I have enjoyed watching video here. There are so many microcontrollers Ive using the F series so far.

Hi John, binging all your vids. Do you think non-hardware oriented founders can build and launch an electronic product?

How deal with daemons like stores fees, shipping fees, customs fees, tax fees, fcc cert fees, ul cert fees, RoHs cert fees, etc ... I decided swap a completed project to open hardware for those reasons. Apparently it is a company business not for persons?

I'd love to see EasyEDA in a challenge like that!

Your whole channel is exactly what I've been looking for and is answering all of my questions I've had, even many I didn't even think of. Such a niche topic but thanks for taking the time to share with everyone.

I switched to Kicad since v4 because cadsoft/autocad eagle was too limited. Kicad is more powerful than anything I could design, and V6 is really usable, freerouting is also a powerful addon

time to switch to safe systems ...

i am student i am use KiCad

Microprocessor... Has an MMU, hardware driven cache and a RAM interface, usually some version of DDR. MPU could have some cool features like multi-cores, branch prediction, hypertherading, video encoding/decoding, integrated GPUs... all the peripherals SPI, USB, I2C, CAN, UART are usually still there. Often used with a big OS like linux or windows. Microcontroller... Much simpler system with no MMU and contains an integrated bank of static ram and "flash memory". Standard peripherals like SPI and UART and GPIO, but never PCIe.... Sometimes there is no hardware floating point unit. Lots of cool features like vectored interrupts are available, but are specific to architecture like ARM or LX6

I design boards with hundreds of components, thousands of pads (and that's all without big scary BGAs), and I exclusively use KiCAD. I also design dimensional critical boards such as printed microstrip RF voodoos and printed transformers, ranging from signal to kilowatts, again, all with KiCAD. And I do have a commercial license of Altium Designer, so it's nothing about money. It's just the combination of faster algorithm and easy scripting made KiCAD much more productive for me. And lastly, on similar hardware, Gnome 46 just runs way faster than Win 11. My workstation (7940HS) is WAY faster running Ubuntu 24.04 than my similar specced laptop (U9-185H) running Win 11. If not for certain apps, mostly tax, banking, and other government-related stuff requiring Windows, I would not even consider a Windows laptop in the first place.

I have an annual competition in school called "TIE - Technolgies of Interconnections in Electronics" and, since I'm working with Altium Designer starting with 2016 - passing from an older Orcad Layout - I could participate to this contest. BUT I didn't because "which is the best" PCB software label does NOT come down to speed (which TIE was all about) but to capabilities. I don't know KiCad but I know Altium and I would NOT leave it unless I'll switch to Cadence Allegro (maybe). Strangely enough, there's a more "advanced" competition called TIE+ - also related to PCBs but the "advanced stuff" and that competition usually goes for around one week and not 3-4 hours like TIE alternative. I wonder why is so long (differentials, complex routing, PCB stack, controlled impedances, and the list can go on). I'm not an Altium affiliate, I'm just working with it so I have to say that speed doesn't mean "better"! If you have a huge/complex PCB, planning is your friend, not speed! Some edits: for me, Altium has a nice looking GUI over Allegro but from what I heard, Allegro is more capable in some aspects, the downside is that it throws a bunch of files in project directory - thing that I don't like. KiCAD is for rapid prototypes, I would give it a chance! If it does have libs importer from Altium then it's a plus for me!

KiCad

can i have Nicolas and Jerry yt if they have

Key CAD