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Multi layer pads not connected
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nilsd 7 years ago
Hi! I just received my first PCBs that I designed myself. I want to be able to solder wires to the three pads (+5v, 1w, GND) both on the top and bottom layers so I made the three pads multi-layer. It seems though that the three pads are not connected to the pads on the other side. For example, the GND pad on the top layer is not connected to the GND pad on the bottom layer. So my question is, do I need a "hole" in the pad or something for it to be connected to the other/bottom side? In my screenshot I have selected the GND pad. Thanks! [1]: /editor/20171111/5a05eb52e6038.png
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nilsd 7 years ago
![enter image description here][1] [1]: /editor/20171111/5a05eb52e6038.png
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andyfierman 7 years ago
If a pad is set to `All layers` and it is specified to have a hole then the pads on each layer will be connected to each other by the copper plating in the through hole. Therefore if there is no hole in a pad then it cannot be connected to anything on another layer without explicit tracks and vias. * Please see: https://easyeda.com/editor#id=a0cf7282b35140928ab93bc65c4b9cfb in: https://easyeda.com/andyfierman/Elements_of_a_simple_PCB-e42c7b2a4e17449f821a97d04806aeeb
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andyfierman 7 years ago
Were you trying to make something like these? 10MMPAD 8MMPAD 6MMPAD where you have an all layers pad but with multiple vias in it to connect to pads on all other layers to form a thermal pad or a high current bonding pad for off-board wiring? Do a **SHIFT+F** search then select and Cut the All Layers pad to show the vias inserted into the pad area. If you want to do something like that yourself just remeber to keep the vias in from the edges of the pads otherwise if you try to connect the pad via spokes into a Copper Area, the clearance areas that are enforced around the vias (but are masked by the main pad) extend beyond the edges of the main pad. Difficul to explain so clone the pad and play with it to see how it works. :)
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nilsd 7 years ago
@andyfierman Thanks so much! Will put holes in them next time =) Or make use of vias, might be prettier..
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andyfierman 7 years ago
I guess to salvage the PCBs you already have, you could just drill a hole through the pads and solder in a top to bottom link. Not pretty and only works for 2 layers as there's no guarantee of solder taking to an inner layer pad.
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andyfierman 7 years ago
This stuff might help... https://easyeda.com/andyfierman/Welcome_to_EasyEDA-31e1288f882e49e582699b8eb7fe9b1f
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nilsd 7 years ago
@andyfierman Thanks for the link, will check it out! I fixed the ones I have by soldering a "clamp" (resistor leg) going around the edge of the card to the bottom pad. Only using 2 layers on this board so that'll do it for now =)
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Tutorials 7 years ago
hi, We will improve this at next version.
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