Cheap EOS3 BGA64 design
I bought EOS3 BGA on CrowdSupply and as I started to work on my board. After some time I have discovered that it would be hard to make it at low price.If I would do it correctly I would need to use small vias, probably buried vias so for few boards that did not make sense to me…But as I still wanted board I had some idea to do it hacky way. If I do not use VIA under BGA then all will be good and cheap. I tough that one of two approaches should work.First idea was to use just the pins I need – and not to place pads for the pins I do not need. But then I looked at the datasheet and as I discovered some pins in datasheet would not mind if they are connected on startup I used other approac... »