KiCAD 7 PCB Layout in 5 steps

[@rustyutb]

WHAT? I just bought a full course of Kicad, then i realized it was out of date... Then i was searching for the missing infromations in the internet and end up here in this video... Just shocked that it contains all informations i needed in only 13 minutes... I'm sad and happy at the same time... ahahhaha

[@smartpowerelectronics8779]

Yes KiCad is pretty intuitive, you can find many other videos on KZbin about it. For most functions KiCad 6 and 7 are very similar. Happy to hear it was useful for you.

[@diags_1109]

Is this a sponsor ... lmao ... gasp ...😱

[@siriusspaliblc2698]

Never buy information first seek it for free. In fact never buy anything first seek it for free.

[@kwaaaa]

The most straightforward, concise and clear startup guide. Seriously, this is how all introductory videos should be! Thanks for sharing.

[@smartpowerelectronics8779]

thank you man!

[@Noughtta]

This is exactly what I was looking for to get started with KiCAD without all of the filler!

[@smartpowerelectronics8779]

It was the video I wanted to have when I started using Kicad 😆

[@lewisbeauchamp9092]

This might be the best tutorial on KZbin.

[@smartpowerelectronics8779]

Thanks Lewis! It is the tutorial I wanted when I started with KiCAD 🙂

[@LehartPro]

It's actually a terrible tutorial. Here's why: 1 - Speeds up the video missing crucial steps 2 - Does nothing in the way of explaining to the view the reasons behind each step 3 - Missing steps for defining the footprints at J1, J2, D3

[@penelopejurd7082]

@@LehartPro ?!? It's a 13 min intro tutorial! It gives a brilliant overview. Then you can go in and fill in your knowledge gaps. Tutorials are usually painfully slow.

[@FHollis-gw4cc]

Hey, hey, hey! I did it! I have spent hours watching videos trying to figure out how to make a symbol and footprint for a couple of devices. Then I found this video. And I learned it wasn't so hard after all. You, sir, have my greatest gratitude! Thank you so much for this lesson!

[@smartpowerelectronics8779]

That is so nice to hear!

[@smartpowerelectronics8779]

I aslo struggled to find simple tutorials, so when I figured it out I made one myself...;-)

[@billsmith396]

Thank you for boiling down a complex process into a workflow that is easy to follow.

[@smartpowerelectronics8779]

Thanks Bill! KiCAD is really easy to use, you just need to start.

[@Sekir80]

@@smartpowerelectronics8779 Thanks for the intro! I was wondering while you did the PCB routing... Does KiCAD not have an autoroute function?

[@ikemkrueger]

@@Sekir80 You have to install a plugin for it.

[@RoofusRoof19]

Amazing tutorials man. As a beginner I understood literally everything.

[@smartpowerelectronics8779]

Thanks man 🙂 I actually wanted this tutorial when I started using KiCAD, so I made it when knew how to use it. I am not an expert in KiCAD or PCB design, just a hobbyist.

[@kurtamesbury6679]

BRILLIANT SUMMARY! Most tutorials are PAINFULLY SLOW or contain a LOT of unnecessary commentary. They also are not "end to end" process explanations leaving users wondering "What came before?" or "What next?" Your video takes advantage of the fact that it's a VIDEO, not a live lecture - so if someone needs to reference a point that went by a little fast, they just REWIND! I will bookmark this video and refer back to it often. WELL DONE!

[@smartpowerelectronics8779]

Thank you so much!! Glad to hear it was helpful.

[@Dronebotworkshop]

Excellent tutorial, I really enjoyed it!

[@smartpowerelectronics8779]

Thank you so much! KiCAD is such a great tool, hope this video helps beginners to start using it. By the way, I am a big fan of your channel, always very detailed and professional content.

[@laxmangordon4209]

He's here!!!!

[@njokuchiemezuo3109]

You've done wonders in my electronics journey.

[@princegautam6825]

I wonder if folks who have commented below has actually gone through the video (except for some), there are so many things which are missed and not explained. even the schematic and PCB are not matching. I have spent like 2hours figuring out what am i doing wrong, when i realized that the reference itself is incorrect. Never the less, I really appreciate the time taken to compress the video of the entire design in 13mins. Please add note and comments wherever necessary for new designer who refer to this video. Note: above comment are for my observation for this video only, other videos from Mr. T are great, keep up the good work

[@smartpowerelectronics8779]

@@princegautam6825 Thanks man, I do the channel only for fun

[@cpuikemike]

Totally ran into the same issue(s). Literally watched the video frame by frame at a few spots. Love the tutorial either way but the speed and skipped features left me frustrated (like the fact that the USB orientation changed and J1 & J2 were modified).

[@thunderdevil1576]

​@@cpuikemike hey, do uk how to modify that J1 and J2? It went from conn-1-4 to SO8-1-4, could you pls help with that?

[@thunderdevil1576]

​@smartpowerelectronics8779 hey, could you please let me know how to modify that J1 and J2? It went from conn-1-4 to SO8-1-4, could you pls help me with that?

[@eonassis2006]

@@thunderdevil1576 Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical

[@DeadHead_23]

I came back to youtube, to search for the missing skills I need for my interview on KiCad next week. I'm just happy and lucky to find your channel. Thanks for your help 🙏🙏

[@smartpowerelectronics8779]

Great to hear that, good luck!

[@PrinceWesterburg]

My God, this is actually really easy - I've been putting off using PCB software for 20 years but recently I have genuine need of it and thanks for making this video!

[@smartpowerelectronics8779]

Wow, thanks man, it is not that difficult. "Just do it"

[@gintarasbaranauskas2035]

Well done! Such a complex task explained in 13 minutes.

[@SusilRamarao]

I have currently 7 years of C++ development, and I wanted to enter more into hardware-based software development and work on PCB designs. This video is really good at understanding basics. Thanks for the video mate!

[@smartpowerelectronics8779]

Thank you, happy to hear that. In recent years I made the reverse journey from hardware only to C++ embedded (for hobby only) being more all round will give you a much deeper understanding of technology and what is possible.

[@wagon7052]

awesome video, short, simple and beginner friendly, i refused to start learning pcb design multiple times after seeing 3-5 hour tutorials but today i finally started, just orderred my pcbs after no longer than an hour worth of tinkering around, cant wait to see the end results!

[@smartpowerelectronics8779]

Great man, it is very satisfying to get your own PCB's!

[@franklydude]

I come back to your video over the last two weeks and my first Kicad PCB design is almost complete, it's also very tiny! Thank you...

[@gazilla100]

13분이라는 짧은 동영상안에 KiCad를 모두 담아내다니 정말 대단합니다.

[@Santee2013]

Thanks for the tutorial! I didn't know whether to use Altium, Fritzzing or Eagle. KiCad looks more promising. Cheers again!

[@smartpowerelectronics8779]

Thx Santiago, I also changed to KiCAD. it is free and has many functions. Check out my new video about the Autorouter ;-)

[@gvcallen]

This video is a gold-mine! Perfect for a quick summary of all the steps needed. Thanks a lot!

[@smartpowerelectronics8779]

Thx Gary!!

[@Myviolist]

Dear Sir, this is by far the most well presented tutorial on how to use KiCad along with a practical example. I'm a recent graduate with electrical background. I decided to chase PCB design career. If you offer any tips/ pieces of advice for young adults/ and engineers on how to get good at this profession, that would be so kind. I made the circuit and can't wait to test it.

[@smartpowerelectronics8779]

Thank you for your kind words, to become good at PCB layout I suggest you get familiar with the famous software packages and practice. Learning electronics basics is also very important because your main "customers" will be electronic engineers so it is key to speak their language. The requirements are different per industry, so you may need to pick a direction. Power supply or lighting (my specialty) has different requirements than digital design (phone/android box etc) . Wish you good luck and much fun in your career!

[@smartpowerelectronics8779]

My major is power electronics, if would start now I would go for software (embedded or application all is ok). For PCB layout, suggest to get familiar with more systems and some analog electronics so you can imagine what the design engineer needs. Please consider (my opinion) that PCB layout engineer is a quite narrow field with job stability but not many career options.

[@Professzore]

You can easily make a combined footprint of THT and SMD pads, which lets you simplify the design process and the look of the schematics. And it's also a good idea to make ground-plane.

[@smartpowerelectronics8779]

yes there is a function to make a ground plane, however for this design the frequencies and currents are low, not very critical ;-)

[@TheLightningStalker]

This video got me started with KiCAD and led me to share my experience in the comments.

[@smartpowerelectronics8779]

Good to hear, KiCad is a great tool.

[@boatman323]

As a long time Eagle user this is a really useful short intro to KiCad.

[@Foxhood]

Coming from Eagle, i didn't need an entire bare basics session, just a quick run-down from start to finish. For that this is a great tutorial!! Now to start the tedious process of migrating and updating all my libraries. Hard to believe i'm actually making the switch honestly. When i started in 2011: KiCad was a mess and CadSoft Eagle was what i was trained to work with in college. But then CERN got involved with KiCad and Autodesk with Eagle. Now there is a open-source powerhouse while the former champion is slated for deprecation...

[@smartpowerelectronics8779]

Thanks Chiel, yes in the comments I learned that KiCAD came a long way, it is now a pretty good PCB layou package!

[@victorychibuike2049]

Wow. I hope KiCad acknowledge you for this, you explained like you created the software yourself

[@smartpowerelectronics8779]

Haha, I sure did not! I just made the video that I wanted to have when I started using KiCAD 🙂 Thank you Victorychibuike2049 .

[@onlyrgu]

I havent used KidCAD is 10 years, was using Altium and mentor , I need a refresh course form Kicad 8 this video puts me back on track..KiCAD came a long way

[@smartpowerelectronics8779]

Thank you onlyrgu, good to hear it was useful 🙂

[@ksmith7122]

The Y axis distance between J1 and J2 for the ATtiny25 pins to fit well is 7.62 mm apart, They're going to fit anyway, if anyone was wandering becasue of the design, but an exact 7.62 mm will give a nice snug fit. Then choose between the chip and the SMD as you desire with no issues.

[@c1ph3rpunk]

The part of how to handle resistors alone is worth the watch.

[@xyz87332]

Awesome, this covers every essential thing (no more, no less) to start my first pcb project.

[@sstorholm]

First KiCAD video I found that shows you exactly what you need to get started when moving over from Eagle! Thanks!

[@smartpowerelectronics8779]

Thanks man, great to hear it was helpful!

[@AsemhiaPeter]

please what is eagle

[@sstorholm]

@@AsemhiaPeter Another PCB layout software that used to be good, but not anymore!

[@tomgburklin1112]

If others made video like you the world would be in a better place. Thank you for excellent video.

[@esijal]

Perfect course to help move from expensive Altium to KiCad 👏🤞🙏

[@mr.4o513]

Thank you so much, I haven’t finished the video yet I’m still on create custom foot print, but I’m just starting to get into circuitry and this video has been very helpful on learning how to use kitcad

[@robinsutcliffe_video_art]

This is really great, so straightforward - no wasted words - thank you so much!

[@CuriousMaker609]

I have seen people put holes on the board's edges while panelizing. This makes it easy to break them after receiving the boards. I am curious as to why you didn't do that and how you managed to take them apart.

[@holypokes]

I am also interested in that. Mousebites are not that accurate, but you can break it manually. This way looks more like for a machine milling the edges to separate. I guess he cut it by hand though with a saw or something. Could you find another video that covered the mousebites?

[@sundog486]

My PCB suppliers score them. This keeps them rigid enough for component assembly, but easy to snap apart.

[@ad7i-Radio519]

Terrific Video. Clear, concise, easy to understand.

[@_briannw]

Thank you for this quick, detailed video. You helped me learn KiCAD in 15 minutes! :)

[@a.modestproposal2038]

Brilliant video. Direct, clear, succinct, and mercifully free of tasteless branding and impertinent background music. ❤

[@mylesmcs0309]

Thank you so much, a great into/refresher in only 13 minutes! Really appreciate the start to finish process in a single concise video

[@OMNI_INFINITY]

Thanks for posting that tutorial! Solder paste and a hot air soldering station are recommended.

[@smartpowerelectronics8779]

Yep, hand-soldering with SO8 is still possible, but messy ;-)

[@mykyar9142]

Thank you! This is the most awesome manual! Now I can switch to KiCad!

[@txkflier]

I have designed and had PCB’s made using Fritzing. You might have me switching to KiCad now. Thanks!

[@exploringgodscountry]

sweet dude! It's been a couple decades since I did this! Needing to relearn as launching a custom design shop.

[@electricbadgercollc8146]

Thank you! Great video for someone like me, who is just getting started with PCB layout.

[@smartpowerelectronics8779]

Thank you!

[@phildegruy9295]

Excellent! tutorial including making a custom part! I'm going to give KiCAD a much more serious look.

[@smartpowerelectronics8779]

Great to hear Phil!

[@timbly-wx2ft]

Very brisk and concise run through. Many thanks indeed.

[@christophershelton8155]

Great video! I loved how it wasn't too long but included the fundamentals needed for beginners. Thanks!

[@smartpowerelectronics8779]

Thank you Christopher! Glad you liked it.

[@julienvdk4113]

Where can I find the reference of the footprints for the D3, J1 and J2 components ? And I noticed at time 7:46 that the GND and the 5V USB were switched, why is this ?

[@Hassan669k]

This is incredibly good. Thank you very much for sharing your knowledge, sir.

[@hankhulator5007]

Hi, very nice and neat presentation that approaches all KiCAD modules without fuss :)

[@smartpowerelectronics8779]

thank you so much!

[@hankhulator5007]

@@smartpowerelectronics8779 You are welcome, this exercise was tough to keep straight, short and still didactic.

[@fparisi]

you helped me fall in love with kicad

[@smartpowerelectronics8779]

Thank fparis, I am actually a new user too, used EasyEDA before, but preferred to have all data locally. it is a great tool!

[@donaldklopper]

Wow this helps to demystify some of the Kicad workflow.

[@smartpowerelectronics8779]

Thanks Donald!

[@sighkx3221]

Thank you, I am currently in college this helps a lot keep up the great work.

[@smartpowerelectronics8779]

Thank you Nikolai! Good luck with your studies.

[@kermitinmountain6371]

I just saw your KZbin a few weeks ago, my first project was a struggle and took me a few days to follow, I wrote down the details, but, learned the Version you gave me was outdated. So, I had to go through and tonight. I have completed my first 3d design. Thank you, Mr.T.... By the way, the USB line should be followed by Power(+), Data(-), Data(+), and Gnd(-), EDIT: (11/4/2024) A week ago after seeing this video, I did manage to complete the first pcb, and today, I completed the second pcb. I am impressed with your tutorial with a exception, the update with KiCad. My only questions is: How do I upload the Seeeduino Xiao layout? I had some trouble doing this... Thank you.

[@leuji29]

thx for sharing, all informations that i needed in 13 minutes. have a nice day

[@林韋帆-y1d]

Great video asside from a few things, 1. You didnt show the footprint selection for J1, J2, and D3, but i was able to see them in the logs when you transferred from schematic to PCB. 2nd, it is hard to follow what you did (or maybe im just dumb) im stuck on 7:45 wondering how you flipped the red pads (will edit when i figure it out) Edit: ok i went back into footprint editor and change the pads, idk if its the right way to do it but hopefully itll still work Edit: im on 8:09 why cant i put the track to the one where i want to. I'm trying to connect D1(1) to R1(1) but it only lets me connect to R1(2), pls reply if u know how to fix, is it flipped on schematic editor? bc i cant tell bc its symmetrical. Edit: Ok i just fixed it by flipping it, there were also other issues with wiring that i fixed by moving the wired around Edit: also what is the difference between this and the "make your own digispark USb in the description:

[@eonassis2006]

Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical

[@vincentsteinmetz3726]

I love you ❤ ! Clear and concise this is a milestone in tutorial !!!

[@smartpowerelectronics8779]

Thank you Vincent! It was the video I wished for when I started with KiCAD ;-)

[@robbertvanderheijden]

This literally helped me start making my own boards

[@smartpowerelectronics8779]

😀great, happy to her that!

[@rickeymh]

Thank you. I wish I saw this before I started my project.

[@zoran.grujic]

Really short and amazingly complete tutorial. Thank you! Beginners must see!

[@smartpowerelectronics8779]

Thank you Zoran D. Grujić! I just made the video I wanted to have when I started with KiCAD....

[@geekthesteve6215]

Other than the panelization feedback below I think this is a very well made and useful video. Thanks for publishing such a succinct tutorial.

[@OIP_1]

thanks for this! i'm coming from EAGLE trying to learn KiCAD and this was a great intro, exactly what i needed.

[@smartpowerelectronics8779]

Thank you!!

[@josiahmiller8482]

Thanks so much for explaining things quickly, clearly, and succinctly . . . So many tutorials get lost in irrelevant details - it can be frustrating for people who want to get started! Excellent job 👍

[@arabiccola]

can't agree more with this comment. thank you again

[@CdrSpock]

Sir, thank you for this very helpful compact but very informative tutorial

[@archeraction6]

Crisp 🎉 Thank you, this is my style of learning. You saved me a lot of time. My family and friends appreciate that. Have an amazing day

[@smartpowerelectronics8779]

Thanks man! Glad to hear you liked my video.

[@isaacalonso7249]

Excellent. Short video and straight to the point. Well done!

[@omskariyazmaraikayer913]

excellent video. Thanks. Design Graveyard no!. You have resurrected my interest in PCB design

[@franktechniek]

Thanks a lot! Sort of the 'hello world ' for C, but now for schematics & pcb design. Very informative!

[@andymouse]

Very nice! I especially liked the panalization technique...cheers.

[@smartpowerelectronics8779]

Thanks, this way you can also send out several different pcb's in one go ;-)

[@p_mouse8676]

Cheese! 😉😎

[@andymouse]

@@p_mouse8676 Squeak !!!!!!!!!!!!!!!!!!!!!!

[@anilmalik6275]

You have explained very well 👌👍 thank you sir

[@smartpowerelectronics8779]

Thank you for your kind words!

[@vomitedthoughts]

Thank you kind sir i needed this

[@smartpowerelectronics8779]

appreciate, happy to hear that!

[@TheOleHermit]

EXCELLENT! I've recently worked my way through the 10 great Digi-Key tutorials to design my 1st SMD PCB, using a Teensy T4.1. But now, I'm searching through all of them, just to make sure I've followed all of the steps correctly. Thanks to you, I can do that within minutes. The only important step you've skipped over is drill holes for vias (AFAIK). EDIT: Just checked out your channel. Great content, right down my alley. Congrats on earning a new sub. 😎

[@smartpowerelectronics8779]

Thank you for your compliments!

[@kdh1020snu]

Thank you for wonderful video. It is quite helpful to get interested in the area of circuit design!

[@edwinov]

12:40 "So the PCB works very good". I do NOT agree! It works very WELL!

[@riri06170]

thank you so much for your KiCAD guide video, it really helped me a lot!♡

[@Tokolist]

thank you for perfect kicad quick start guide

[@Kaenargh]

Great introduction to KiCad, Thanks!

[@ImnotChuck.]

On the USB connector, I believe Data - (minus) should be adjacent to +5V, and Data + (plus) should be adjacent to Gnd. I also think the footprint would be a better fit to the mating female connector if the distance between pad 4 and pad 3 was reduced from 1mm to .75mm, and the distance between pad 1 and pad 2 was reduced from 1mm to .75mm, while maintaining the distance between pad 2 and pad 3 at .5mm.

[@smartpowerelectronics8779]

Are you sure you are not Chuck? ;-) For D+/D- you are right! D- is next to Vcc. The schematic symbol is wrong, the PCB is correct. Fortunately it was correct in the Video about the DYI Digispark (kzbin.info/www/bejne/jqioi6mXfN5-eqc) For the mechanical dimensions I used a USB drive as an example. I made a digital photo next to a ruler, enlarged the photo and copied the dimensions. I have searched for a standard for this PCB type USB-A foot print, but did not find any. Do you have a good source?

[@brianhambleton9309]

Your videos are a great resource, thank you.

[@smartpowerelectronics8779]

Thank you Brian!

[@TheStuartstardust]

Really good paced tutorial! 👌👍 Could you add how to prepare for ie. jlcpcb manufacturing - like bom list prepare or generation?

[@silnyye4403]

Up.

[@mirceacluj]

I copied step by step what you do and I have problems: A) the notation of the usb pads is reversed: pad1=+5v pad2=D+ pad3=D- pad4=GND problem B) with connectors=it is not displayed, there is no footprint as with you problem C) in ATiny, my forests have notations and yours don't. All this in PCBeditor

[@Mahsa-v7o5t]

unglaublich vollständig! danke vielmals

[@ahmadsherbeny5609]

Can someone clear this for me : At the end the order of the usb stick pins are different from the one he made What is the right order to create ? @ 6:32 from up to down Vcc D+ D- GND ? according to the video, then at the end there is another order @9:04 Thx in advance

[@smartpowerelectronics8779]

Sorry for the confusion, in USB A/B D+ is next to GND, D- is next to Vcc: the pinout has this order Vcc (5V) D- D+ Gnd

[@danhtrinh1769]

Excellent video. Straight to the point!

[@smartpowerelectronics8779]

Thank you! Good to hear 🙂

[@Petruha04]

Большое спасибо! Именно таким и должен быть Quick start guide :)

[@smartpowerelectronics8779]

Спасибо!

[@alexcircuits]

You are an absolute legend, Thanks!

[@smartpowerelectronics8779]

wow thanks man, glade to be of help!

[@jakob1178]

At 7:44 the PCB-USB connector is basically mirrored. Pay attention to that if you follow along!!

[@kenstolp1101]

Best KiCAD tutorial. Question - How did you remove the boards from the panel?

[@johnacsyen]

Thanks. Very helpful. Going to make my first pcb

[@fenris5674]

In the video (7:45) the USB connector is mirrored. What is the correct placement?

[@smartpowerelectronics8779]

Hi Fenris, in the PCB the connection is correct. I used the PCB and it works well. (You are right: The naming of D+ and D- are swapped in schematic and pcb, but functionally connected correctly to the Attiny85, so the circuit works, sorry about the confusion)

[@fenris5674]

@@smartpowerelectronics8779 Thank you for the answer (and tutorial). I just have to be sure if I make and order a test PCB from your tutorial 😃

[@quanngo1353]

Thanks for the great tutorial. just a quick question, were the 2 though-holes connector designed to place the chip? then what are the SMD pads for?

[@smartpowerelectronics8779]

you can put a DIP8 chip OR the SO8 chip + connectors, so it is a combination PCB 🙂

[@birphon]

Considering this is for a KiCAD 7 and I have KiCAD 8, I found this video to be wonderfully simple to follow aside from Importing from Schematic breaking. Initially it was cause I didn't give the Conn_01x04 some footprints as I missed what footprints to give as you decided to speed up the video, speeding up is fine however maybe mention that the "specifications" for parts are in the description. Even after applying the footprint you have given and a random one to the LED, they look completely different compared to what you have - so I decided to stop. Maybe an update to this video to clear up things?

[@jeromejames6847]

the pin headers (Conn_01x04) dosn't have a footprint and also how to put a pad that is shaped as a circle with a through hole in it, i tried to make a custom foot print but the kicad 8 dosn't have the option for a through hole circular pad

[@ovidiulazea8938]

Excellent! Thank you for the tutorial!

[@jonathansandiford4137]

What did you use to cut them out individually? They don't look like they would have just snapped off. Thanks for making this video. I have struggled with making panels, and always had to go back and forth with the pcb manufacturer, whom basically did it properly on their end. 😅. Shoutout to jlcpcb for that!

[@smartpowerelectronics8779]

I used a knife to score the breakouts, it can be done better by adding some vias in the breakouts. One viewer commented this. Search for PCB mouse bites🙂

[@mirceacluj]

minute 7:44 in 3 milliseconds you changed the order of the USB pins: 1/2/3/4 to 4/3/2/1? and the yellow silkscreen with the inscription USB remained in the same position. Is this an edited and modified video? I haven't come across a Kicad video clip on KZbin so far that doesn't have problems of understanding. Am I stupid?

[@smartpowerelectronics8779]

Seems you are smart and have eye for detail, I corrected something there. Also I cut and edited to speed up the pace.

[@stefankrimbacher7917]

Great video. Want to start now with KiCad 8.

[@smartpowerelectronics8779]

Yes KiCAD8 is out, I did not try it yet. KiCAD 7 was very similar to KiCAD6, I saw some KiCAD8 Videos and it seems the basics are the same 🙂

[@udlabs5711]

I have a question, and I would also like to thank you Sir. Why did you use Silkscreen to draw the USB pads at 4:55?

[@prasanna.5039]

Thank you for this video..Put more videos for PCB Design

[@ArjunPoudel-q3h]

Thank you Very much sir. Make more and longer projects with saying how to decide width of wiring before start instead press after we draw.