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SainSmart 16 channels relay board

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Not a bad job but there are a few problems. A number of your pins in schematic in the fpz have pins but no terminal which means the connection point is in the middle of the pin rather than the end (it will snap to the center of the terminal if the terminal is defined). The input connectors are offset a bit from the .1 grid I suspect because the reference pin (unfortunally I never have figured out what pin Fritizing snaps to the grid) is one of the .156 connectors. As a matter of personal style I'd change schematic to offset the input pins as 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 so that a row of connectors on breadboard will produce a row of straight connections in schematic (at present the 2 connectors overlap each other in a messy way). A number of your pins in the fpz are set as female rather than the standard male, which may cause connection problems (although I didn't immediately see any) but also may be how to keep the screw connections out of pcb view (although you don't appear to be doing that as they are showing in pcb). The gerber shows 5 different hole sizes where there should probably only be 2 (the .1 pins at .038 and the screw terminals which look to be .08 something). The mounting holes only appear on the silk screen (which may be what you intended) but won't be drilled. All that said, please continue making parts, we need more parts makers :slight_smile:

Peter


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