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PCB CNC: Unterschied zwischen den Versionen

Bkubicek (Diskussion | Beiträge)
Bkubicek (Diskussion | Beiträge)
Zeile 125: Zeile 125:
Pins of through-hole mounted devices also do not form automatic top-bottom connections. This especially frustrating with the eagle autorouter, because I found no way of turning this off. Sometimes you can compensate by soldering also on the top side of the part, but very often there is really no space for that. Best thing is to manually overwork the board in eagle.
Pins of through-hole mounted devices also do not form automatic top-bottom connections. This especially frustrating with the eagle autorouter, because I found no way of turning this off. Sometimes you can compensate by soldering also on the top side of the part, but very often there is really no space for that. Best thing is to manually overwork the board in eagle.


[[Datei:goodpad.png|center|thumb|400px|How to make your solder easier."]]
[[Datei:goodpad.png|center|thumb|400px|How to make your solder easier.]]


=== Routing ===
=== Routing ===
Zeile 132: Zeile 132:
Then I move the wires around, so that the sidewards distance is maximized. This is done my making complete diagonals, and successively moving outer wires further outside.  
Then I move the wires around, so that the sidewards distance is maximized. This is done my making complete diagonals, and successively moving outer wires further outside.  


[[Datei:brdgoodpad.png|thumb|center|800px| Example of good (not really, but sufficient) and bad wire placement". It is not a very good example, I will try to produce if there is time]]
[[Datei:brdgoodpad.png|thumb|center|800px| Example of good (not really good, but sufficient) and bad wire placement". It is not a very good example, I will try to produce if there is time]]


=== Mounting Holes ===
=== Mounting Holes ===
Zeile 138: Zeile 138:


=== Isolation Distances ===
=== Isolation Distances ===
If you happen to work with larger voltages, you need isolated gaps on the PCB. I would do that by drawing a filled polygon on the bottom layer, or a group of overlapping or conntected wires, as if the isolation were a wire.
If you happen to work with larger voltages, you need isolated gaps on the PCB. I would do that by drawing a filled polygon on the bottom layer, or a group of overlapping or connected wires, as if the isolation were a wire.
After the milling, I would use a sharp knive to lift the copper from the board at a corner, and peel it off. If you know the trick, it works quite well.
After the milling, I would use a sharp knife to lift the copper from the board at a corner, and peel it off. If you know the trick, it works quite well.


[[Datei:peeledpcb.png|thumb|center|600px|A peeled off PCB. Ok that not for isolation. You see here that I needed to peel off multiple areas. If I had connected the individual regions with overlapping wires, I could have saved some time.]]
[[Datei:peeledpcb.png|thumb|center|600px|A peeled off PCB. In this case, it is not an actual isolation distance,  but just for the screws. You see here that I needed to peel off multiple areas. If I had connected the individual regions with overlapping wires, I could have saved some time.]]


==Links==
==Links==