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sir, why they give double underscore what is the significance of that

What about tooling holes? Should I place tooling holes everytime?

where did u get the custom pcb?

The wire is supposed to go into the crimp zone, never have I seen some crimp like that & solder it into place

Wow! perfect!!!

شكرالكم 🎉🎉🎉

What is phase margin? Can someone explain in simple terms?

do instrumentational amplifyers

Does this basically eleminate emi/rf noises and common and differential mode as well starting from 150khz to 10mhz ??:0

Just place 100nF everywhere, it'll be fine. And maybe read the datasheet to see if they recommend values and layout.

In my country after some smart people in the customs made a stupid decision, we often lightly joking that people who run their IoT using Arduino as "orang kaya" or "rich people".

Clear as mud

For some reason my xSignal Class Rule for Matched Lengths, does not apply to my xSignals when I click test query and also do not show up in my Interactive Length Matching Properties. :(

good video. What if, my power will be 4 types? 3.3V, 4V, 5V, 12V The 12V will be spited into 3.3V, 4V and 5V, of which 12V will also be used to power components for several relay switches. Would it be good to use 6 layers? 1) path and power supply 3.3V, 4V 2) grounding 3) 5V path and power supply 4) grounding 5) 12V path and power supply 6) grounding

An Arduino is wonderful for remote sensor applications that either don't need a data connection or are able to connect in other ways. They're great for repetitive tasks that don't require much processing overhead. ESP32 is enough to run an entire mac classic emulator with CPU to spare. It's overkill for many applications. It's nice, though, if you need the power, or just don't care about power utilization or code optimization.

Plz how can you know the measurement of your border lines, the length and breath. Also, do a video on how to customize a RF module. Great Tutorials so far. Thanks 💥🙌

Used this before, looks like it is totally removed now? The link does not work and I can not find it. No info on that. What happened?

in china, JLC's PCB in 10cm*10cm is free（including postage), dont know the situation in other country.amazing company😚.

I always get quality knowledge from this channel. Keep it up. God bless you ❤

Can we do a part 2 please? Can we talk about reverse polarity, BMS for multicells, etc?

i just encountered a new problem with battery powered designs. when the battery is first inserted, the battery holder springs create a series of loose contact phenomenon (similar to a switch debounce). The protection IC doesn't immediately see the battery voltage at its full value but a sequence of pulsating values instead. The battery protection IC interprets this as an over-discharged situation and therefore disconnects the battery from the rest of the circuit. i just added a larger cap on the protection chip to delay its startup just enough for the battery voltage to stabilize

JFTR: BMC controllers are really controlling fans, and other stuff on a server, but those are actually independent computers on the PCB. They boot up to a vendor-specific code, and you can connect it (via IPMI, browser, redfish, ssh, etc) and do server maintenance (power on/off, sending reset, open up a virtual KVM console, mount ISO images, etc) About the colors: if you check a standard PC power supply, the yellow will be +12, the red is +5, the orange is 3,3, and the green one is which powers up the PSU itself (if you connect it to ground)

cant belive im learning how to desolder stuff from waluigi

Full tutorial please

Hey

This is great advice. It happened that we made mistakes because there was not enough free space on the board for silk-screen printing, and the draftsman created the assembly drawing based on the STEP model and silkscreen layer, and could make a mistake by attributing the designator to the wrong outline of the component.

Arduino vs wires or Arduino vs pcb? Since you use arduino in both versions 😅

ESP32 is a microcontroller (board), Arduino is a microcontroller platform. You can use boards with ESP32 on that Arduino platform. Apples and oranges...

Thank you both colleagues. One question, when the differential pair return current is presented, does the simulated return current includes as the conduction as the displacement currents?.

Not better or worse. All depends what you need.

Can we download the presentation somewhere?

This was fantastic. Much appreciated

Oof. Wish I had looked up this video before I had attempted to desolder some pins like those in the video. I might have been able to salvage the pins. Great tip! Thank you for the video.

@RobertFeranec @torbenbrokate5714 try the new feature "PCB Layout Replication" in Altium Designer 24, it should be faster.

Use a tantalum capacitor in the LC filter and you will get much better filtering

Also keep in mind esp32 very power hungry fo battery based projects.

There are legitimate downsides to the ESP32 not mentioned. It's terribly inaccurate for analog read (especially when WiFi/Bluetooth is running), draws 3-10 times the power than other modern microcontrollers, its PWM is software emulated so it's unusable if you need precise and accurate PWM. Just some things to be careful about because some of these are dealbreakers for some projects.

Good video and nice presentation with demos. I recommend Arthur Kay's book about Op Amp Noise for practical engineers. However, I think we miss a very important part of op amp topic, which is the modeling of the op amp. Think about modeling of the noise sources, CMRR, PSRR, slew rate, input impedance, and output impedance.

I am surprised , only LC circuit can bring so much changes in EMI ? What is the use of pi-filter ?

Fantastic video!

Just finished this series. Thank you for the lessons and inspiration. I always wondered about the whole Pcb process and now I know.

yeah ok, but there are no holes for the pins connectors !

Please consider doing a follow up on charging battery banks, like 2S 2P battery banks for example.

Everything thing about op-amps is mathematics related, its invention by design was for a analog computers part #741, so the first topic out the door is DC again and DC feedback, advance topics are AC parameters this is where we enter the upside down world TYPE-1,2 and 3 compensators and beyond.

HI Robert, I am currently working on projects involving the design of electronic circuits for Atex products. Would it be possible for you to create a video addressing this specific topic? I am confident that your expertise would be of great help to me and others in the field.

Thanks a lot for your superb content ! A relatively "consumerish" question ... Since a battery is specified in terms of its charge / discharge cycles, suppose we keep the appliance (eg. laptop) powered continuously by the charger, would it prolong the battery life. I assume that a laptop would draw power from the charger and not from the battery, hence seldom discharging the battery.

Did someone mean Atmel/atmega?

OPA928 is a competative of the long out-standing ADA4530-1, which appeared roughly in 2016. And TI even made it pin to pin compatible to ADA4530-1, with the same guard ring structure.

A lot of useful information in this video Robert. Must watch before dealing with op amps. I'm just in the process for selecting proper op amps for my electronic load(i think i'm choosing opa189).

I'd say hippies built hippie computers. Long haired computers.