Miniature PCB Design | STM32 + Magnetometer + CAN | Altium - Phil's Lab #22

[@darinwhite5475]

As a non-professional circuit designer and also a non-beginner, I find these design walk-throughs to be instructive and helpful, Phil. Thanks a lot.

[@PhilsLab]

Very glad to hear that, thank you, Darin!

[@oraszuletik]

Nice. Two side note: you may spare some mm2, if you put the swd to the other -non populated- side of the panel. For the 120R you may add one jumper 0R chip resistor in series, which gives you more freedom in the CAN topology later. In the current scenario, this device should be on one end of the CAN line.

[@defsdoor]

Great project - looking forward to the coding - I can't believe how cheap CAN transceivers are now.

[@mikemironov7551]

3D view with transparent PCB layers is great feature - I can see where vias go to. Ten points to Altium.

[@tchristell]

Phil: Great video! Very clearly explained and succinct. I appreciate the lack of a time wasting into that many KZbinrs use. This project is vastly superior to the magnetometer solution on another project I'm working on and I look forward to the programming!

[@nerosy2341]

Great work, I wish u can make a video on making a PCB in detail using Altium and covering the basics in the future that would help a lot!

[@AmaDoXX]

Altium and stm32. i love it. thank you!

[@stm3252]

I'm looking forward to the second part (coding)! Thank you for sharing this very useful videos, Phil!!

[@cosmicazur]

Can't wait for the second part

[@huzeifadawood4137]

Great Tutorial! Can you please do a KiCAD version of the schematic + layout? I enjoy your KiCAD videos.

[@PhilsLab]

Thank you, Huzeifa! More KiCad videos to come :)

[@dehCremus]

Wow! I also use Tag-connect at my graduation project company. Didn’t know them before that. They’re cool, but really expensive.. I’ve designed a footprint that has pads on both sides. So it doesn’t matter from which side you program it.

[@flipschwipp6572]

We have gone a far way to have a 80MHz cpu in a sensor node. I recently got back to use& love modern 8051 derivates and hoping small RISC-Vs will grow strong.

[@julianbarbera9822]

Phil - Do you prefer Altium over KiCad?

[@PhilsLab]

Hi Julian, I must say I currently prefer Altium as it has a few additional features that KiCad doesn't. But if I want to make a quick design/board, I'll typically go with KiCad. :)

[@yasinbedirhansimsek2883]

Your videos are very helpful, educational and fun to watch

[@Grimgorus]

Great, as always! Looking forward to the next segment!

[@PhilsLab]

Thank you!

[@harrysvensson2610]

13:46 "Nothing too thin, nothing too thick", that's a perfect translation of the Swedish word "Lagom" :D - Not too much, not too little of something. It is just Lagom.

[@husamdarwish7009]

Can't wait for the software side from a professional Thank you for the another great video

[@rallymax2]

Tagconnect pads are awesome. I came across them at the embedded systems conference (esc) in Silicon Valley in a tiny booth about 10 years ago. Super happy to hear they are still around.

[@Antyelektronika]

It is no cheap do you know about some less expensive alternative?, I assume that on the market is more than one manufacturer ot that kind solution

[@ColtonBaldridge]

@@Antyelektronika Another project I know of that's open source and accomplishes the same job is 'SOICbite'. There's a github repo and hackaday page for it. I recommend checking it out if you need a Tagconnect alternative

[@johnstephenson4428]

Glad to see you back!!!

[@PhilsLab]

Thank you, John!

[@patrickhochleitner7754]

Clear and perfecly explained as always. Thank you.

[@PhilsLab]

Thank you very much, Patrick!

[@DanBowkley]

My first boards with the Tag Connect are just about to ship from JLC, I'm really looking forward to playing with it. I went with the 10 pin and included serial tx/rx as well as IO0 and !EN for the ESP32, programming would be exactly like a dev board. I almost went with the edge connect but...jeez $90 for a plug?! Love JLC, want to throw their part search through a 97th floor window. Their idea of parametric is practically useless, most of the time I end up finding parts on Mouser or DigiKey and then trying to find it on JLC. Extra fun when you're trying to keep costs down and stick to their basic parts.

[@CarlBugeja]

Great video! one minor suggestion - check out the s12zvc - its basically a microcontroller with an integrated 5v regulator & also a can transceiver.. i used this a few year ago but this can really make your outline much more smaller

[@PhilsLab]

Thank you, Carl! That's a good tip - I'll check it out, would definitely help to make this smaller :)

[@JeromeDemers]

Nice work! Let us know when you update the project on github.

[@onepeace3228]

love to see more from you with altium! Great video as usual!

[@blackarrow8683]

Great Tutorial! Can you please do more Altium schematic + layouts and tutorials? I enjoy your Altium videos.

[@PhilsLab]

Thank you! Yes, I'll try to make more Altium videos in the future :)

[@kenshin16021610]

Thank you so so much for this. especially with Altium. Looking forward to your next video about firmware developement.

[@osamadz5884]

Hope in the future you will do some videos about mixing analog / digital PCB /and is there any progress in the course ? Great video as usual

[@kheireddinebendjedia3930]

Great work as always, i would love to see more of your work. Keep it up.

[@PhilsLab]

Thank you very much!

[@John_Smith__]

Another Great Video! And a very interesting board no doubt very small and compact.

[@gino.avanzini]

Have you had any problems regarding component shortages from JLCPCB assembly?

[@embed21com]

Thanks Phil for this informative tutorial!

[@PhilsLab]

Thank you for watching, Khaled!

[@sumedhburbure4173]

Thank you Phil for this great video!

[@PhilsLab]

Thanks for watching!

[@RohitSardessai]

Fantastic video as usual Phil. Love watching these. I was curious, how much time does it take for a design like this? How much time did you spend on component selection, schematic capture, layout and firmware development?

[@PhilsLab]

Thank you very much, Rohit! This hardware design probably took me a couple of hours (4/5-ish?). Given the constraints of the JLCPCB parts catalog, component selection is actually pretty quick. Schematic is basically just looking at CubeIDE and the datasheets for the other ICs - in Altium footprint creations adds a bit of time. Layout was very quick due to the size and the small number of connections. Firmware - at least on the magnetometer side of things - can be done in 1/2hrs.

[@electrodonkey]

How does the STM handle the CAN timings without any external oscillator?

[@TheCalvinSkinner]

STM chips have internal 16MHz oscillators

[@ibrahimyahmadi3897]

Great instructive tutorial, keep it up . I would like to see also fpga , mcu pcbs

[@revrsr]

it is a PCB size demanding, but I was expecting to see a TVS diodes for the CANH, CANL to protect against transient on the vehicle. Hey, I am still awaiting for the course!

[@MrZomhad]

Really exciting stuff! Thanks alot!

[@soutrikband]

Cool video as always !

[@themagnety]

Did the follow up to this video ever come to fruition? Designing a very similar board but would love to learn about how you wrote firmware for it

[@hardikgupta3752]

Hi Phil...I also have to design a board of the same size as you with stm32wb30 with BLE and an IMU sensor. Can an antenna for the Bluetooth be fit on a board this size?

[@vcodevideo]

Great again!!!, Thanks. I've one doubt, why you don't use jumpers to keep the code in the STM32? I saw some videos where it's mandatory to use jumpers to avoid the code lost. What's the difference??. I'm moving from Arduino to STM32 and I don't want those jumpers on my projects.. thanks in advance

[@mistymisty4480]

Great video as always patiently waiting for the firmware video

[@PhilsLab]

Thank you very much!

[@TheCalvinSkinner]

NICE I was planning on writing a CAN driver this weeK!

[@PhilsLab]

Awesome, hope it goes well! :)

[@shkhamd]

Hi great content! Curious if you ever released the part 2 of it.

[@NivagSwerdna]

This video has so much to like... I have always lusted after using Tag-Connect but never quite managed to get there due to the cost; the connectors I have seen are always >£50... maybe this will push me over the edge... the TagConnect form factor is so much nicer than 0.1" headers

[@PhilsLab]

Thank you! I totally agree with the whole TagConnect thing. The initial price is pretty hefty but well worth it in the long run I think.

[@Haellsigh]

Why not go with a microcontroller with an integrated CAN transceiver? ST or NXP makes some nice Cortex-M with those.

[@user-xb5zu6zu7j]

From what I see his MCU has CAN interface. No idea why he uses peripheral CAN.

[@jchiang471]

how about a KiCad Version, I've already been used to your KiCad tutorial videos

[@PhilsLab]

More KiCad videos definitely coming :)

[@chadkrause6574]

Thanks for the video! I’m trying to teach myself circuit design + low level programming and these videos are excellent and easy to follow. Will you do a video on CAN? I see I2C videos but no CAN

[@muhammadabbaskhan6010]

I am constantly getting this Error on Vout pin of regulator and all other pins to which +3V3 power port is connected. 1. +3V3 contains output pin and power pin objects. Kindly help how to remove this error.

[@spehropefhany]

Thanks, would be interested in seeing more of using Altium with JLC PCB.

[@shahrukhp3355]

For CANH & CANL your routed deferential pair how much impedance you have taken 90 ..

[@kenguru5506]

at 1:04 on the lower left corner you can see my watch Project 👏👍

[@PhilsLab]

Haha nice

[@bussypaul7326]

Liked it! Nice to see you back! Thank you! You can also try PCBPOWER, the Indian version of jlc!

[@andymouse]

Great video, I'm looking forward to your MAG driver tutorial, and how to use Cube...cheers.

[@Davedav84]

where it's possible find the schematic for this board?

[@NiteshAgarwalGeek]

Very cool project! The github link is not working btw.

[@natasha.]

Have u heard about a Raspberry Pi before? They're super useful I think! I saw one today and I think I will get a few for my tinkering. I love electronics! I study it at University but I don't know if I'll continue

[@natasha.]

Phils lob has changed my life!

[@Kefford666]

I love little projects like this, where it's got one main purpose and you're just using some of the pins 😊 In terms of the stack-up I think you're fine with just the one ground plane since most of your signals are on the top layer. Just the CAN rx and tx that aren't but I think it will be fine. Seems a shame not to include the SWO debug output with the SWD though, that makes things nicer for programming. Looking forward to seeing the writing of the drivers!

[@AARON-lx2kz]

how does the swo pin add more debug/programming functionality? just wondering the benefit of adding it @PhilsLab

[@TheCalvinSkinner]

In lieu of waiting for the next video of programming the CAN peripheral. I have some questions regarding the CAN message filtering. I'm using an stm32f446re nucleo. My question is regarding the "filter registers" specifically the "Filter bank i register x (CAN_FiRx) (i = 0..27, x = 1, 2)" this is page 1085 of document RM0390. I don't understand the correlation of this and the macros defined in the stm32f446xx.h file. Referencing the stm32f446xx.h file I see this macro: sFilterRegister[28] I assume this is how you set the filter ID but how do you access the high and low register(the value x = 1,2)? If you're not familiar each of the 28 filter banks has two 32bit registers. What I do not know how to do is write the code to set the filter ID. Example: CAN1->sFilterRegister[0] |= 0x000000001; Random guess, should it be: sFilterRegister[0]->FR1 |= 0x00000001; Any help understanding this is appreciated! RM0390: www.st.com/resource/en/reference_manual/DM00135183-.pdf

[@TheCalvinSkinner]

Resolved: I did some searching and found my answer. Thanks for the inspiration. sFilterRegister[] is a struct with 2 parameters FR1 and FR2 both type uint32_t. Code goes like this: CAN1->sFilterRegister[0].FR1 |= 0x00000001; CAN1->sFilterRegister[0].FR2 |= 0x00000001; :D

[@NivagSwerdna]

I'm surprised there isn't a dsPIC SAMC21 part that would work for you that would have CAN included?

[@PerThomasJahr]

Nice! Would it make sense to also route SWO to support debug trace output?

[@PhilsLab]

Thank you, Per! For larger projects/designs I include SWO on the header, however for this small, really simple design (also software-wise) I didn't see it to be necessary.

[@yudhahamdiarzi5553]

Hello sir, can you give us example of CAN J1939?'

[@yasirhassan8557]

when are you doing CAN programming for it?

[@isaacclark9825]

I cannot wait for the coding. I really like your content. Have you any experience with the STM32H7 processors?

[@PhilsLab]

Thank you very much, Isaac! Yes, I've used H7 processors in a couple of designs (flight controller, audio processing). Maybe I'll make a little devboard with some sensors on it for a future video.

[@isaacclark9825]

@@PhilsLab Ooooh! Don't tease me!!

[@AfricanTimeMeal]

Will there be a can tutorial coming with this board?

[@edwardjames7295]

Don’t mind if it’s very basic question.how to know what value of capacitor/resistor to use around the ic chip. any useful links to calculate. ?

[@PhilsLab]

This information is given in the relevant (IC) datasheets and application notes (typically under the section 'application information').

[@dymastro788]

Again really nice video! Love to see some software on the STM32 with CAN. Are you planning to do a video in the future, on STM32 with Ethernet PHY? Like LAN8720 with RMII for example? Would be nice to see your approach on the PCB layout. Think resources on these topics are scarce.

[@PhilsLab]

Thank you! I definitely would like to make a video on Ethernet layout/design. I'm not sure if that'll be with STM32 however but rather with an FPGA board (Xilinx Zynq?).

[@dymastro788]

​@@PhilsLab Awesome! Looking forward to a subject like that! STM32 would be nice, I'm a big fan haha! Did some small things with Xilinx Zynq in my last year, do you implement something like Ethernet in the PS or PL of those boards? Keep up the good work!! What I know is that I'm learning something in the end!

[@SciDIY]

Thank you for a video. Can you tell, please, whether it is ok for assembly to have such a small clearance between QFN components? I was told that 40 mil clearance is good rule of thumb. But it looks like in your design clearance is smaller. Is JLC good with that? Thank you:)

[@Ragnerok21]

Love your videos, Phil! I have a question about your PCB design process. I haven't seen you use teardrops. I've been told that generally it's a good idea to use those but now I am just confused lol So should I use them or not? And if yes, then in what cases?

[@robert_g_fbg]

Talk to your fabricator. Teardrops are most useful in preventing micro fractures in the copper at the sharp corners where circle meats line.

[@nxvasix8696]

I have watched most of your stm videos and the quality is great. I want to get into using the STM32 for boards like Arduino but I’ve noticed there seems to be a real lack of information understandable by the average person. Would you be able to suggest a video to get started with or possibly a video of your own for a basic dev board? Thanks

[@nesportskid]

Nice video thanks for sharing. Why not just use the internal pull-ups on the GPIOs for the I2C pull-ups?

[@PhilsLab]

Thank you, Christopher. The internal pull-ups on the STM32 are pretty weak I believe (on the order of 40kOhms).

[@RixtronixLAB]

Nice information, thanks :)

[@PhilsLab]

Thanks for watching!

[@abhishekreddy2425]

An off-topic question but, does SDMMC (SD 4 bits wide bus) traces really require length matching? Application note from ST (AN4938) on "Getting started on hardware development..." mentions it. What worked for you? It's a small size board like yours in this video (< 3x3cm size)

[@PhilsLab]

A few different places say keep the delays from clock to data lines within 250ps - so I would try to follow that. If you can't length match you can always 'throttle' the bus speed in software.

[@christianhasbum4402]

Hi, great video. A question, what resolution and/or ratio does your screen have?

[@phenyl22]

It's impossible to get some chips they have on lcsc... I need something with an msp430i2041 which is an extended part... In principle...

[@piotrlenarczyk5803]

Thank you for video.

[@MatheusFP104]

Why you prefer the stm32 + can tranceiver instead of lets say a Esp32 Pico with CAN integrated?

[@PhilsLab]

I'm just so used to the STM32 stuff that I 'instinctively' use their ICs.

[@sagarhm2237]

Sir Whic h is tiny Processer in Stm 32 can u send I'd or link plzzzz

[@MartinWolker]

What version of Altium do you using?

[@CannonballCircuit]

hey phil, just a heads up, the patreon link in this video seems to be broken

[@mohammedyahya8411]

Hi, I am wondering what happened to jlcpcb stock most of stm32 chips are out of stock and if exist are very expensive.

[@ebinwaitee]

Global silicon shortage I'm afraid. STM32 are quite popular among the automotive industry and there's a massive shortage of production combined with an unexpected demand

[@AhmedIsmail-sw6so]

hi , where is the design files? thank in advance

[@sehaaltnkaynak9327]

Hi Phil nice job ! Do we need to connect thermal pad of mcu to ground ?

[@PhilsLab]

Hi Seha, typically yes, it's recommended (/necessary) to tie the thermal pad to GND.

[@sehaaltnkaynak9327]

@@PhilsLab Yeah i cheched the ref man. and it is recommend but it to late bcs. boards had been fabricated. Luckily they are working well.

[@botnetuser360]

There seems to be some trailing characters in the hyperlinks in your description, or is it just me?

[@TheNeukyhm]

How did you learn to use Altium?

[@savejeff15]

Gets an upvote from me for the i2c address on the layout. These addresses are sometimes very well hidden in the datasheet

[@PhilsLab]

Awesome, thanks!

[@savejeff15]

@@PhilsLabI love it when they only give it as binary or give the 7bit address als 8bit with 1/0 for R/W. I think I2C addr. Should always be found under the specification table at the start

[@stephanemuller7032]

Great video, it's really enlightening to have all these explanations, even for such a small PCB. I still have a question though. Why use an STM32? Isn't it kind of overkill (and expensive if you have to make a lot of those) considering that you need such a small amount of pins. Wouldn't another smaller MCU also work?

[@1337PB]

Do you create your own symbols and footprints in Altium, or do you import existing libraries?

[@PhilsLab]

Yes, I usually create my own symbols/footprints. Sometimes I'll use the SamacSys library importer tool.

[@vitalim4044]

Dear Phil, GITHUB and Patreon links are not existing anymore.

[@sagarjetani8869]

Hello, I had learn Kicad only because of your tutorials please help me to learn I2C, UART and other RF Communication PCB design. I wish you will sir. Thank you for these useful tutorials.

[@PhilsLab]

Thank you, Sagar! Definitely more to come :)

[@bgitego]

Quality content

[@PhilsLab]

Thank you :)

[@terrygould3230]

When are we going to get a video showing the firmware development?

[@PhilsLab]

Thank you very much - more to come! :)

[@johnstephenson4428]

Looking Altium Circuit maker is free however Professional version at $163.00 a month is out of my range.

[@pinnaclesystemsgroup6472]

What motivated the use of Altium instead of kiCAD as you have been doing in your other videos. Altium is a fairly expensive PCB design tool.

[@PhilsLab]

I use Altium for work and more 'complicated' projects. KiCad I'll use when I need something done quickly or for most of my videos, since that's what's accessible to most of my audience!

[@Gengh13]

Compared to the kicad 3D viewer the one from Altium looks pretty bad.

[@nasermasri7847]

What do you think about Fusion360?

[@oguncanmunuklu9402]

Great video, can you share the source files?

[@henrikvendelbo1117]

Why didn’t you use a transceiver that’s also an MCU?

[@kaustavsengupta8757]

You know dude got good job when he suddenly switches from kiCAD to ALTIUM......lol

[@Rahuldhebri]

From KiCAD To Altium, That's a switch Sir, May I know the reason?

[@Antyelektronika]

Phil mention something that altium is a tool which is used by him in his Daily job, maybe thats why

[@PhilsLab]

Yeah, as Patryk said, I use Altium at work.

[@Rahuldhebri]

@@PhilsLab Yes I get that Sir, Thank you Sir for sharing your knowledge and this Viking Drones PCB

[@phenyl22]

Thank you very much for your videos, I am learning a lot! Are there ground planes /pours on the top and bottom layers too or just the signal/power traces for space reasons?

[@aatifshah8476]

Dear sir i want to make career as PCB Designer & i found that most of the industries are using Altium software.. i would request to u plz make more & more videos with altium ...tnx for ur hardwork ..