Electronics > Projects, Designs, and Technical Stuff
Critique my first PCB
carl0s:
Right, I have had a go!
I had the clearance rules turned off before because.. well because I didn't know better. I didn't realise they actually directed things like polygon pour to clear themselves around tracks. I thought they were just there to nag you about things!
So I have done it, and.. well two things. Firstly, it's left a stray bit of copper, and as it's part of the overall polygon i don't know how to remove it. Just ignore it? I suppose it looks nice.. adds balance.
Secondly, the clearance rules have highlighted to me that those tracks coming in beween the pads, are 3.89mils next to the connector pads. Do you think this is too close for el-cheapo PCB manufacturers? Please say it'll be fine..
(I know, I need to put in some more vias)
ataradov:
The polygon part is fine. But the typical cheap PCB manufacturers offer 5/5 or 6/6 mil track/clearance. I typically route everything using 10 mil tracks and spaces when possible. So you will have to rethink your layout.
carl0s:
Currently looking like this:
carl0s:
--- Quote from: ataradov on May 19, 2018, 08:11:31 pm ---The polygon part is fine. But the typical cheap PCB manufacturers offer 5/5 or 6/6 mil track/clearance. I typically route everything using 10 mil tracks and spaces when possible. So you will have to rethink your layout.
--- End quote ---
Alright.. Well, when I read that, I thought, bugger.. nightmare. Re-think. But, now that I know that the polygon pour is smart and will leave clearances around other nets, I think I'm comfortable with adding in vias and signal tracks on the bottom layer, instead of going between pins, and then re-pouring the bottom ground layer.
I'm going to have a go after my tea :)
Thanks!
ocset:
here is my PCB layotu guide attached.
Also, Dave Jones guide to PCB layout
http://alternatezone.com/electronics/files/PCBDesignTutorialRevA.pdf
Thats Dave Jones who runs this site
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