Hi all, new to KiCad.
In my schematic, I originally had a symbol T0-3 (U1) package. PCB layout route connections looked great.
I changed the symbol to a SOT-23-3. Looking at the PCB layout, the routes to me do not seem correct from U1 back to the J! (phono jack)? I lao do not see any holes for U1?
Not sure what file type to export from my project for viewing my concern. Attached are static images.
U1 is a surface mount IC. Look up SOT-23-3 package on the internet.
Even without that, your trace from S is touching R on the jack. That’s not right.
And Pin1 of C1 top track is not connected.
The physical size of C1 does not match the Value
The tracks are far too fine to cope with long term use of the socket.
You mention that this SOT23 replaces a TO3 package, but the DRV5055A4 is a Hall Effect Sensor.
Aaaah I see what my misunderstanding is now. I will redo the layout and routing… thankx very much
If you need to do this later, you can just zip the project folder, although it would be better to exclude backups and other irrelevant files.
Hi
Could I ask you to check my work befoire sending off my gerber files to purchase PCB?
The only warning have is J1 overhangs the PCB which is what i want to install into a 3D printed enclosure.
Unfortunately since I’m a new user, will not upoad the zip file. I can give you a link to the file opn google drive. Let me know
Thank You
Hi @ronyd ,
If you follow the instructions in this FAQ link, you can promote yourself so you may then upload your zip file for inspection.
Hi all,
thankx for the new members doc explaining lots of tidbits. 
Attached is a zip with .kicad_pcb, .kicad_sch, and .kicad_pro files
I was going to order from JLCPCB, but OSH _PARK is cheaper and free USPS 5 day shipping. Also, KICAD users can just upload the.kicad_pcb file only instead the gerber files.
Thankx for taking a look
Archive.zip (14.0 KB)
Hi jmk,
uploaded kicad files for review when you have a moment. thank you
I have KiCad at other PC than I write so I had to move your file there (via pendrive).
I use 0.2mm tracks only if I have IC with 0.4mm raster and only near it changing the tracks to 0.25 as soon as possible. In your case I would use at least 0.5mm tracks.
Had a quick look and made some notes that may help here’s my modded version
HiHat_mouse.zip (661.3 KB)
This was created in 8.0.8
Andy ,
Wow very nice @mousey . I like the routing and placing the mounting description at the top of schematic.
Questions:
Thankx very much Andy for you time. 
No problem 
PWR_FLAG a power flag is necessary to tell Kicad where a pin or part is driven from, and yes a reference no value, probably the best for you to do is read about them in the kicad docs as i’m not good at teaching 
But a huge amount of people new to Kicad get caught out and we get an enormous amount of problems that are solved by simply putting in the power flags !
Yes the GND is taken from the schematic as I gave it a ‘net name’ ‘S’ in the case of your design, so it is a simple matter of hitting the fill icon, you will then be asked which side of the board and what would you like to connect it to. If you highlight the front pour (or back) , I usually click on the hatching around the outside and hit ‘E’ for edit all becomes clear.
Better to say that the end of the cap, GND and ‘S’ are all connected to the pour. If you prefer you can remove both front and back but in this design they are appropriate, also there is an environmental issue I always think about and that is ‘the more copper you leave on the PCB the less gets into the sea etc’ didn’t mean that to rhyme 
The button I am on about shows a filled plane and below it is the same frame but with dotted lines, these two are used to switch you fills (pours) on/off for ease of routing and remember if you change the shape you need to press ‘B’ to refresh and update, this is another people stumble on 
Holes in blue, I think your looking at the 3D view and if you spin it around you will see they are just holes there’re for mechanical strength and alignment and are placed on the part by the manufacturer That’s why I went and found the 3D model so I can be sure the holes are drilled in the correct place. Hope this fills in the gaps but the best place at your pace (another bloody rhyme) is the official Kicad documentation as it has much more detail on the topics we have played with
Eddie, thank you for the info. I will definitely checkout the newbie threads. 
