I’m trying to place Power tracks on the bottom layer, also a GND Zone. Surface mount on top side.
I know how to make the GND zone, and tracks, but I am unable to add and connect VIAS. The power tracks are 1MM, but the component PINs are smaller.
Here is an attempt to connect a track to a component PIN, it just won’t connect. I’ve tried custom tracks, but I presume the fault is the custom track is on a different NET to the POWER/GND tacks. How do I get round this please?
I think it is a clearance issue. The thin red line around a pad define the clearance. You can see that the GND pin3 clearance overlaps pin2. Try to turn off the DRC to test if it allows you the connection.
Then, change the clearance to a lower value at Setup->Design rules and work with the DRC on.
But first make sure that your fab can produce boards with the new DRC settings. If not then either search for a fab that can or use a component in a larger package (with more clearance between leads and therefore pads)
It might even be the case that the footprint at hand is designed wrong. Check that the pads are not too wide (either against the datasheets suggested footprint or against IPC suggestions.)
Getting a footprint that works in layout is all well and good, but if it doesn’t match your planned part it is useless. This is much more important with SMT parts that don’t have long legs that can be bent into tortuous shapes to fit an erroneous footprint.
Check the trace connecting to pin 3 closely. It might be a bit too wide for the pad. (Notice that the rounded end of it protrudes into the area between pads 2 and 3)
You might either want to use a thinner trace or a zone to connect this via.
I also notice that you have very limited copper on your via. (Annular ring might be a bit small.) So it might be necessary to either decrease the hole size or increase the copper size. (Check your manufacturers minimum annular ring requirements. If they do not give this info then you need to check the drill size and drill positioning tolerances to calculate the minimum needed for yourself.)