Phil, the only discouraging thing about your videos is that you appear to be able to pump out such a prodigious quantity of well-thought-out designs so frequently that it's apt to make the rest of us feel like we lack the necessary superhuman abilities! Hahaha.
Thank you very much Phil for your great videos. I appreciate all your work. On your own channel and on Altium. Great thanks to Altium too, for supplying us(who do electronics as a hobby) these great materials and giving us an option to develop our knowledge in Electronics. I hope and wish you will keep this passion forever. I want you to know, that what you are doing for humanity, can not be paid or sold with any valuable or exchange. Live long, happy and healthy with the greatest wealth you already have, which is the happiness for helping to everyone unconditionally.
you should do a video about power rail filtering, I notice you use pi networks with FBs a lot. how do you determine if they're required, and what kind of sims do you do to choose component values? do you notice any issues on your high speed digital ICs that are taking abrupt gulps of current to get their fast edge rates (FBs would choke these frequencies)? do you just rely on local capacitance for this?
Definitely plan on making a video on that in the near future. For now, there's a great app note on ferrite beads by Analog Devices (www.analog.com/media/en/technical-documentation/application-notes/an-1368.pdf). I'm not placing FBs after regulators for digital power lines (for example, placing a FB on the +5V line that feeds a +3V3 buck converter is okay), rather at power inputs before (e.g. directly after a connector). Have not had any issues for higher-speed designs this way either. More to come in the future video!
Thanks Phil. This is basically the exact design I was hoping to make too, and looks similar to how Meris do their reverb and delay pedals (in a larger enclosure though - I can’t believe you stuffed all this into such a small board!!!). Your channel is the best. :) Can’t wait for the DSP tutorials.
As a hobbyist, thank you so much for the invaluable content. I’ve learnt a lot from your videos in my own project. I haven’t tried STM32 as I was using ESP32 previously due to connectivity requirements. If it is possible, I hope you can do a custom board with using STM32 with 4G modules. I think it’ll help a lot of us in trying to create IoT devices. Once again, thank you and always looking forward to your next video!
Thanks a lot! Very glad to hear that the videos are useful. I'm planning on making some ESP32 videos in the future as well. 4G module videos probably as well in the future, however, that isn't something I have on my 'to-do' list at the moment I'm afraid.
Would you consider creating a video explaining complete PCB layout process as in how you plan component placement , routing etc ? I understand its the most boaring process of embedded development but would love to understand how you manage to create such beautifully designed boards.
Another well thought-out instructional video full of useful information. Thank you very much for for making them and keeping the quality this high. So far I've only designed 4-layered boards which then I hand or oven soldered myself, so the price at the end was a bit shocking. Maybe I have to get used to it, or just perfect my BGA aligning/soldering skillz :)).
That price is eminently reasonable for five units, 6 layer, assembled, components both sides, and including the vendor supplying the components. So much sourcing time and assembly time saved.
Very thoughtful and inspiring design once again! I have a question for this and the previous dsp you designed. Can these configuration types be configured as a usb audio interface (audio dac/adc) that streams data in realtime via usb like typical soundcards do? Thinking of the low noice front end side this could be real good for applications like xlr mics or usb dacs! Thanks alot!!
Great projects like the other ones Phil thank a lot. I have a question about ferrite bead in your designs. How do you choose proper ferrite bead according to your design ? I mean how do you determine the target frequency that needs to be suppressed ? I read a lot about ferrite bead but I could not find the answer of this question :) thanks in advance ...
Hi Phil, I've been experimenting with some audio codecs such as the AD1937/AD1939 and a few others. Mostly I find them too complex. I couldn't even get the AD1937 to work at all (it just produces a bunch of loud noises). I've also experimented with the WM8524 (hardware controlled stereo DAC) which worked on the first attempt, but that one only has two output channels and I need 4 output and 4 input in total. I've also ordered a few WM8782S (hardware controlled stereo ADC) to experiment with, but when I looked recently, they've now gone obsolete. (And the WM8524 is also not that new in the market) I've been wondering the PCM1753 and PCM1808 (which I found on mouser) as newer replacements (the datasheets are last revised in 2019 and 2015 resp.) but the downside is that I would also need 2 of each of those because these also only have 2 channels each. So now I'm wondering about this CS4270 you're using here. It's not available on mouser unfortunately, and on LCSC it's quite a bit more expensive (17 dollars with only 34 in stock). Now that's not a big problem, as long as I can get it to work and it will be available for the foreseeable future. So I wanted to ask how much difficulty you've had getting this chip to work?
Another great video. if you think the mid mount usb c connector is cool. you can make the board itself the usb c connector. there is a footprint out there for eagle for this.
In a number of your videos I have watched, you reference that custom JTAG connector. Do you have a recording in which you discuss that at length? Maybe you should make one?
Hey Phil, do you mind sharing the CS4270 driver for STM32? I’ve used the same CODEC in a DSP board design and I’ve scoured the internet for any reference but haven’t found anything.
Nice Video! One question regarding the DC blocking capacitors in the audio path: Usuall, Class 2 (X5R, X7R) dielectric MLCCs are not recommended due to microphonic effects. Electrolytics, Class 1 (C0G) or film capacitors are preffered, but they are much larger. Do you see any downsides to using Class 2 MLCCs? By what factors are those microphonic effects influenced (SPL, voltage etc.)? Could you maybe do a video about this topic (capacitors in audio applications, no special material voodoo, just facts)?
I noticed that you've connected boot0 to ground, and are using SWD for programming(so you can boot into flash). But what are you using the USB for? Doesn't that require system memory for booting so boot0 pin must be logic high?
@Phil's Lab Are there any DAC/ADC or CODEC dev boards you could recommend? I've tried looking, but just find the rubbish surplus PCM5102s. Ideally, for now, I'd like to avoid getting PCBs made up
Wow, this is one beefy board! The ULPI part had me curious. Did it really require this precise length matching? I doubt it is more critical than DDR which requires length matching to within 2.5% of the base clock frequency. Also, what's your DDR memory standard? And what's the purpose of the holes around the SWD connector? The assembly looks really clean, did you have to rework any components?
Hi. Do you think it's possible to take a Pi Zero, and Guitarix, and ADC/DAC head, a remote control layer, and get everything in a box? Any "pedal", any "amplifier", "cabinet". Or may be to take one of open hardware linux on arm projects and use it as a base instead of spending months and months developing and debugging low level code for every "pedal"?
Very nice design. I picked up an STM32H7 dev board a few months ago to play around with audio DSP stuff, so interesting to see what components you picked. The group coloring and Draftsman features in Altium look really nice. I noticed the reference designators for some of your resistors are "RT" -- what was the reason for that, since some of your others just used "R"?
Are you selling this board? I'm a programmer and I like to dabble in electronics (esp32, controlling stepper motors, various sensors) but have never done anything as complicated as this! I've often dreamed of an audio/dsp oriented dev board, something like the electro-smith daisy seed but with more/faster ram and a faster mcu, like the teensy 4.0. It'd be awesome to build my own groovebox with such a board! Incidentally, would your course "Mixed-Signal Hardware Design" take me to a level sufficient to design such a board?
Thanks for your video. As always amazing. How do you handle design rules for example for power where you have wide traces but also narrow sense lines? Do you make a different net and use a net tie? Is there a more elegant solution?
Does the USB C connector have contacts on both sides of the board? Why 0.8mm thick for that connector? Why the weenie mickey mouse mounting ears? How does the enclosure mate with the odd shape board?
Wow very good content sir.But I would like to know the names of the memory chips and how are they connected to the microcontroller because I used to think the low microcontroller internal ram/memory is the only memory the microcontroller can use.
It depends on whether the microcontroller itself supports external memory or not. For flash memory, the routing is usually point to point for clock and data line when the protocol is quad-SPI. Some microcontrollers such as ESP32 support additional RAM through a similar protocol. The datasheet or other documents should tell you what additional components should be added. In the case of parallel buses where you have multiple data lines and a clock. Make the data lines matched in length but don't stress over it. As long as they kinda sorta look like they are roughly the same length, they should be fine. The next thing is to make the clock line slightly longer than the longest data line but not too much.
How did u chose the value and voltage rating of the coupling caps? Also why didnt you use a buffer to buffer the reference and thus use larger resistors there? Also at the input dont you need a preamplifier? (i am new to audio so i am not sure)
Voltage rating typically at least 2x DC bias + signal voltage. Value is design-dependent, e.g. filter cut-off. Smaller resistors give lower Johnson noise. I didn't need a buffer, since I'm biasing high-impedance FET op-amps. Guitar input voltage range is nicely in range with the ADCs capabilities.
You put one decoupling cap on each power pin in the IC and then put some higher value ones (1-10uF usually) close to the IC. 2 adjacent power pins may share the same capacitor but this is more of a last resort. Their values is taken from the datasheet, reference design or the app note.
I've been wondering: If you have a four layer board with your two inner layers as ground planes is it okay to put a power plane on say you bottom or top layer? For say a board that doesn't really have any high speed interfaces.
@@abhijithekv That configuration is not supported by most of the PCB gurus as far as I see. Their reasoning is the lack of a ground reference plane for the bottom layer signal plane. I think you can use the power plane as a reference but need to be careful when changing the layer with a via since you will lose your reference. Because of that they either recommend SIG/GND/GND/SIG or SIG/GND/SIG/GND stack-ups and recommend to route the power on the signal layers. This way all the signals have a proper reference. However, if you really need a dedicated power plane and two signal layers, 4 layer stack-up is a bit unfitting.
I didn't see any test points (or missed them, I like electronics but it isn't my day job), what would be your take on that? Thank you very much for making these videos, having examples of how to do correctly or not PCB and explanations too helps a lot to progress!
Hi Phil, what is the reason for switching to pcbway? Just curious 😀 NB: I manufactured your emi board with a ESP32 (more familiar with it). Are videos with this board still expected? Already played with it, for esp max 40mhz. But enough to already provoke EMI.
JLCPCB is good, however, they aren't able to produce the type of boards I want to show in future videos. With PCBWay we get many more options (layer count, flex, advanced assembly, etc.) - so I'll be able to showcase FPGA/SoC boards, rigid-flex, and so on in upcoming videos :) Cool to hear you had the EMI test board produced - yes, will have more videos on that as well!
My colleague previously used to work in a company where they designed a 56 layer PCB for some kind of a scientific precision measuring equipment. The board had 10+ FGPAs. I was told more than the difficulty with routing, these BGAs consumed truck-loads of power. So the typical 1oz layer wasn't enough and hence there were 2/4 layers of the same voltage. And the fact that power planes come in 'pairs' means the same amount of GND layers and soon your layer count gets insanely high.
...sorry to ask but, there could be a way for anyone to buy this or other boards? Either through to your web or via the manufacturer... May be a short period to do so... I guess you will not be affected at all, and would allow others to follow / fork / ... your work... Thanks
I'm afraid I only have five of these boards assembled - due to the chip shortage it's difficult to have larger quantities assembled. But if there's enough interest I can see to make a 'general purpose' DSP board for people to follow along.
Phil, the only discouraging thing about your videos is that you appear to be able to pump out such a prodigious quantity of well-thought-out designs so frequently that it's apt to make the rest of us feel like we lack the necessary superhuman abilities! Hahaha.
Couldn't have said it in a better way
Sure, wish I can get slow pace version form him. The thinking during design
Haha thanks, Graham !
😅 was think just that! Where do you find the time Phil to do so much?
This channel is a gem.
Thank you very much!
Thanks a ton for featuring us in your great design， Phil! We are honored to partner with you 🥂🥂
Thank you very much for having me on your team! Looking forward to future great boards from PCBWay :)
Thank you very much Phil for your great videos. I appreciate all your work. On your own channel and on Altium. Great thanks to Altium too, for supplying us(who do electronics as a hobby) these great materials and giving us an option to develop our knowledge in Electronics. I hope and wish you will keep this passion forever. I want you to know, that what you are doing for humanity, can not be paid or sold with any valuable or exchange. Live long, happy and healthy with the greatest wealth you already have, which is the happiness for helping to everyone unconditionally.
Thank you very much for your comment. I'm glad to hear that! :)
This is extremely well thought PCB design! Thank you!
Thanks a lot!
you should do a video about power rail filtering, I notice you use pi networks with FBs a lot. how do you determine if they're required, and what kind of sims do you do to choose component values? do you notice any issues on your high speed digital ICs that are taking abrupt gulps of current to get their fast edge rates (FBs would choke these frequencies)? do you just rely on local capacitance for this?
Definitely plan on making a video on that in the near future. For now, there's a great app note on ferrite beads by Analog Devices (www.analog.com/media/en/technical-documentation/application-notes/an-1368.pdf). I'm not placing FBs after regulators for digital power lines (for example, placing a FB on the +5V line that feeds a +3V3 buck converter is okay), rather at power inputs before (e.g. directly after a connector). Have not had any issues for higher-speed designs this way either. More to come in the future video!
Im about to start designing an eval board/module version of one of our products at work, this is a great starting point!
Glad to hear that, thanks Wyatt!
Thanks Phil. This is basically the exact design I was hoping to make too, and looks similar to how Meris do their reverb and delay pedals (in a larger enclosure though - I can’t believe you stuffed all this into such a small board!!!). Your channel is the best. :) Can’t wait for the DSP tutorials.
Awesome, thanks for watching, Jason! Next DSP vid will be on guitar overdrives.
Great walkthrough of a pretty intense board when you add in the extra work of getting it made in house....cheers.
Thanks a lot, Andy!
As a hobbyist, thank you so much for the invaluable content. I’ve learnt a lot from your videos in my own project. I haven’t tried STM32 as I was using ESP32 previously due to connectivity requirements.
If it is possible, I hope you can do a custom board with using STM32 with 4G modules. I think it’ll help a lot of us in trying to create IoT devices. Once again, thank you and always looking forward to your next video!
Thanks a lot! Very glad to hear that the videos are useful. I'm planning on making some ESP32 videos in the future as well. 4G module videos probably as well in the future, however, that isn't something I have on my 'to-do' list at the moment I'm afraid.
Jumped into this.. ❣️thanks for uploading..
Thanks for watching, Manu!
Love your content. Would love to see more about mixed signal design, particularly with proper grounding!
Would you consider creating a video explaining complete PCB layout process as in how you plan component placement , routing etc ? I understand its the most boaring process of embedded development but would love to understand how you manage to create such beautifully designed boards.
I'd love to - however, this would mean recording and editing tens of hours of content. The closest I have to that is the course via Fedevel.
You deserve far more subscribers for the qaulity of your videos!
Thanks, Jon!
Another well thought-out instructional video full of useful information. Thank you very much for for making them and keeping the quality this high. So far I've only designed 4-layered boards which then I hand or oven soldered myself, so the price at the end was a bit shocking. Maybe I have to get used to it, or just perfect my BGA aligning/soldering skillz :)).
That price is eminently reasonable for five units, 6 layer, assembled, components both sides, and including the vendor supplying the components. So much sourcing time and assembly time saved.
Thanks for uploading this Phil
Thanks for watching!
Amount of information in this videos and way you explain them we should be paying you. Waiting for new videos on the fpga SOM board :)
Thank you! Just received the SoM modules - will be trying them out and then making some videos.
Very thoughtful and inspiring design once again! I have a question for this and the previous dsp you designed. Can these configuration types be configured as a usb audio interface (audio dac/adc) that streams data in realtime via usb like typical soundcards do? Thinking of the low noice front end side this could be real good for applications like xlr mics or usb dacs! Thanks alot!!
Thank you! Yes, ST even provides drivers for an audio USB interface (X-CUBE-USB-AUDIO). Up to 96kHz and 24bits.
Thank you very much, please consider a video on how to choose the components based on our requirements?
Great projects like the other ones Phil thank a lot. I have a question about ferrite bead in your designs. How do you choose proper ferrite bead according to your design ? I mean how do you determine the target frequency that needs to be suppressed ? I read a lot about ferrite bead but I could not find the answer of this question :) thanks in advance ...
Great stuff as always. Why are most of the connector pins not soldered though? 4:00
Hi Phil, I've been experimenting with some audio codecs such as the AD1937/AD1939 and a few others. Mostly I find them too complex. I couldn't even get the AD1937 to work at all (it just produces a bunch of loud noises). I've also experimented with the WM8524 (hardware controlled stereo DAC) which worked on the first attempt, but that one only has two output channels and I need 4 output and 4 input in total. I've also ordered a few WM8782S (hardware controlled stereo ADC) to experiment with, but when I looked recently, they've now gone obsolete. (And the WM8524 is also not that new in the market) I've been wondering the PCM1753 and PCM1808 (which I found on mouser) as newer replacements (the datasheets are last revised in 2019 and 2015 resp.) but the downside is that I would also need 2 of each of those because these also only have 2 channels each. So now I'm wondering about this CS4270 you're using here. It's not available on mouser unfortunately, and on LCSC it's quite a bit more expensive (17 dollars with only 34 in stock). Now that's not a big problem, as long as I can get it to work and it will be available for the foreseeable future. So I wanted to ask how much difficulty you've had getting this chip to work?
High quality content as always
Thanks!
Amazing board!
Thanks!
Please show the setup in stm32cube? It's quite difficult finding high quality tutorials on advanced stm32 peripherals and MCUs such as the H7 series
Good idea - I'll do that. It was a bit of a headache getting it up and running with caches + DMA, but all working well now.
@@PhilsLab your headaches make fabulous content and are our valuable learning opportunities!
Another great video. if you think the mid mount usb c connector is cool. you can make the board itself the usb c connector. there is a footprint out there for eagle for this.
Would you link to this?
In a number of your videos I have watched, you reference that custom JTAG connector. Do you have a recording in which you discuss that at length? Maybe you should make one?
How many days of full-time work does a board like this require on your side? And I mean including datasheet reading and parts selection.
Including datasheets, part selection, and so on - probably just under a month of part-time work (evenings). Full-time I guess that means two weeks.
Thank you for sharing this.
Thanks for watching, Andrew!
very cool board, but can you modify the analog side to work at eurorack levels and add some CV ins and outs?
Hey Phil, do you mind sharing the CS4270 driver for STM32? I’ve used the same CODEC in a DSP board design and I’ve scoured the internet for any reference but haven’t found anything.
Nice Video! One question regarding the DC blocking capacitors in the audio path: Usuall, Class 2 (X5R, X7R) dielectric MLCCs are not recommended due to microphonic effects. Electrolytics, Class 1 (C0G) or film capacitors are preffered, but they are much larger. Do you see any downsides to using Class 2 MLCCs? By what factors are those microphonic effects influenced (SPL, voltage etc.)?
Could you maybe do a video about this topic (capacitors in audio applications, no special material voodoo, just facts)?
Yay!! More guitar videos!
I noticed that you've connected boot0 to ground, and are using SWD for programming(so you can boot into flash). But what are you using the USB for? Doesn't that require system memory for booting so boot0 pin must be logic high?
Hi Phil, great video as always! Will the design files for this board be available online for reference? Thanks!
@Phil's Lab Are there any DAC/ADC or CODEC dev boards you could recommend? I've tried looking, but just find the rubbish surplus PCM5102s.
Ideally, for now, I'd like to avoid getting PCBs made up
Wow, this is one beefy board! The ULPI part had me curious. Did it really require this precise length matching? I doubt it is more critical than DDR which requires length matching to within 2.5% of the base clock frequency. Also, what's your DDR memory standard? And what's the purpose of the holes around the SWD connector?
The assembly looks really clean, did you have to rework any components?
Hi. Do you think it's possible to take a Pi Zero, and Guitarix, and ADC/DAC head, a remote control layer, and get everything in a box? Any "pedal", any "amplifier", "cabinet". Or may be to take one of open hardware linux on arm projects and use it as a base instead of spending months and months developing and debugging low level code for every "pedal"?
Is the schematic for this board available anywhere? Did you ever design with configurable USB Host and Device capabilty?
Do you apply the colored lines manually? Or is that done with some class trick?
Very nice design. I picked up an STM32H7 dev board a few months ago to play around with audio DSP stuff, so interesting to see what components you picked. The group coloring and Draftsman features in Altium look really nice. I noticed the reference designators for some of your resistors are "RT" -- what was the reason for that, since some of your others just used "R"?
Thanks! RT is an indicator for me that those need to be thin-film resistors (in the audio signal path). Similarly, I've marked C0G caps with CC.
Can you please explain how to configure SAI for I2S
Hi Phil, I've notice that somebody asked one year ago if there is a chance to buy such a board. Is there any chance in the meantime? Thanks Bernhard
Are you selling this board? I'm a programmer and I like to dabble in electronics (esp32, controlling stepper motors, various sensors) but have never done anything as complicated as this! I've often dreamed of an audio/dsp oriented dev board, something like the electro-smith daisy seed but with more/faster ram and a faster mcu, like the teensy 4.0. It'd be awesome to build my own groovebox with such a board!
Incidentally, would your course "Mixed-Signal Hardware Design" take me to a level sufficient to design such a board?
Hi Phil, can I know how do you calculate the maximum skew? At 19:18 you mentioned that 100ps skew between SDRAM signals are within tolerance.
Why not use the ADCs that are on the STM32H7 directly?
do u have a bill of material for this design just wanted to know what usb c connector you used
Why are the through-hole pins not soldered?
Thanks for your video. As always amazing. How do you handle design rules for example for power where you have wide traces but also narrow sense lines? Do you make a different net and use a net tie? Is there a more elegant solution?
Net tie seems to the solution in several ecad software packages, including Kicad. Not sure about Altium.
PHIL i also want to build this board how can i get the board layout
Amazing work, I learned a lot again!!!!How long did it take to design this board?
Thanks, Cagri! Hmm something like 2-3 weeks "part-time".
@Phil off topic, but how do you add these inverted color silkscreen labels like this?
Choose a true type font, then click 'inverted'.
Does the USB C connector have contacts on both sides of the board? Why 0.8mm thick for that connector?
Why the weenie mickey mouse mounting ears? How does the enclosure mate with the odd shape board?
Wow very good content sir.But I would like to know the names of the memory chips and how are they connected to the microcontroller because I used to think the low microcontroller internal ram/memory is the only memory the microcontroller can use.
It depends on whether the microcontroller itself supports external memory or not. For flash memory, the routing is usually point to point for clock and data line when the protocol is quad-SPI. Some microcontrollers such as ESP32 support additional RAM through a similar protocol. The datasheet or other documents should tell you what additional components should be added. In the case of parallel buses where you have multiple data lines and a clock. Make the data lines matched in length but don't stress over it. As long as they kinda sorta look like they are roughly the same length, they should be fine. The next thing is to make the clock line slightly longer than the longest data line but not too much.
why some pins on the connectors isn't soldered?
How did u chose the value and voltage rating of the coupling caps?
Also why didnt you use a buffer to buffer the reference and thus use larger resistors there?
Also at the input dont you need a preamplifier? (i am new to audio so i am not sure)
Voltage rating typically at least 2x DC bias + signal voltage. Value is design-dependent, e.g. filter cut-off.
Smaller resistors give lower Johnson noise. I didn't need a buffer, since I'm biasing high-impedance FET op-amps.
Guitar input voltage range is nicely in range with the ADCs capabilities.
@@PhilsLab THX
Hello Sir, Nice design, can you explain how to calculate how many capacitors needed to be connected to the Vcc of the ICs, for example like in 8:44
One for each Vcc pin as he said in the video :)
You put one decoupling cap on each power pin in the IC and then put some higher value ones (1-10uF usually) close to the IC. 2 adjacent power pins may share the same capacitor but this is more of a last resort. Their values is taken from the datasheet, reference design or the app note.
Read the documentation of the IC you are using
I've been wondering: If you have a four layer board with your two inner layers as ground planes is it okay to put a power plane on say you bottom or top layer? For say a board that doesn't really have any high speed interfaces.
Intrested to know why you aren't considering the common SIG/GND/PWR/SIG configuration? Any particular reason or just curious?
@@abhijithekv That configuration is not supported by most of the PCB gurus as far as I see. Their reasoning is the lack of a ground reference plane for the bottom layer signal plane. I think you can use the power plane as a reference but need to be careful when changing the layer with a via since you will lose your reference. Because of that they either recommend SIG/GND/GND/SIG or SIG/GND/SIG/GND stack-ups and recommend to route the power on the signal layers. This way all the signals have a proper reference. However, if you really need a dedicated power plane and two signal layers, 4 layer stack-up is a bit unfitting.
Hi Phil, When will you publish high level PCB design courses which include Altium designer?
Hi Osman, I'm working on it currently. I aim to have it released by beginning of 2023.
@@PhilsLab Waow, I am excited for it :)
Why do you use such design of mounting holes? Is there any advantage except pcb looks cool?
No advantage - I just did it for looks.
I didn't see any test points (or missed them, I like electronics but it isn't my day job), what would be your take on that?
Thank you very much for making these videos, having examples of how to do correctly or not PCB and explanations too helps a lot to progress!
Hi Phil, what is the reason for switching to pcbway? Just curious 😀
NB: I manufactured your emi board with a ESP32 (more familiar with it). Are videos with this board still expected? Already played with it, for esp max 40mhz. But enough to already provoke EMI.
JLCPCB is good, however, they aren't able to produce the type of boards I want to show in future videos. With PCBWay we get many more options (layer count, flex, advanced assembly, etc.) - so I'll be able to showcase FPGA/SoC boards, rigid-flex, and so on in upcoming videos :)
Cool to hear you had the EMI test board produced - yes, will have more videos on that as well!
24:00 what on earth requires a 60 layer PCB?!?!?
My colleague previously used to work in a company where they designed a 56 layer PCB for some kind of a scientific precision measuring equipment. The board had 10+ FGPAs. I was told more than the difficulty with routing, these BGAs consumed truck-loads of power. So the typical 1oz layer wasn't enough and hence there were 2/4 layers of the same voltage. And the fact that power planes come in 'pairs' means the same amount of GND layers and soon your layer count gets insanely high.
...sorry to ask but, there could be a way for anyone to buy this or other boards? Either through to your web or via the manufacturer... May be a short period to do so... I guess you will not be affected at all, and would allow others to follow / fork / ... your work... Thanks
I'm afraid I only have five of these boards assembled - due to the chip shortage it's difficult to have larger quantities assembled. But if there's enough interest I can see to make a 'general purpose' DSP board for people to follow along.
Dsp what is dsp
You have built all this on your own?
Yep
@@PhilsLab it is amazing how you connected alle this together and made it work eventually!
what have you studied?
Thanks, Zain! I studied electrical engineering - however, we didn't have anything on PCB design, so that is pretty much self-taught.
Don't you have a course on udemy?
Yeah, one on Udemy (which is also free on my YT channel), and one with Fedevel.
god bless u xdd