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ALLPCB TEAM Jan 20, 2018
Which is better between single layer and double layer PCB?
How should I choose between the two? When to use single and when to use double PCB? If I have a circuit involved in an arduino, a motor driver and a Bluetooth module, can I use single? If no, please tell me why?
Using a bright light, it's easy to see if a board has inner layers even if it doesn't have blind vias.IF the board have inner layers,it will be a multilayer PCB,otherwise it is not. But for this way, we could not know the exact layers of the board.
Some PCB will have a "stair-step"; each layer labeled with a copper number and cutouts in the other layer to be able to see it.
I was burnt by layer numbering today,my layer number "1" is mistaken as a marker for pin 1 on some nearby connector.
Cut the board in half and inspect the copper, the layers of PCB is the same as the layers of copper.
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