Wise Posted May 5, 2005 Report Share Posted May 5, 2005 I'm about to design and etch PCB's to mount leds and switches to under the frontpanel. It's kind of a modular pcb with two rows of 4 buttons + LED's. I want to be able to mount the board in any direction, means 0 degrees or 90 deg. So there are 2 LED's for each switch (in parallell). You get the point by this picture:First version:To ease up the design and reducing jumpers on the board I have connected the LED's gnd (DOUT) and switches gnd (DIN) together on the PCB. I know this creates a groundloop if I connect the groundpins to both dout and din boards, but should this be a problem ? Or should i just connect it to one ground ?Maybe I have to split it into two boards, one vertical and one horizontal, to be on the safe side ? ???What are you'r thoughts about this ?/Wise Quote Link to comment Share on other sites More sharing options...
moebius Posted May 5, 2005 Report Share Posted May 5, 2005 Hi,There's nothing wrong with boards that have multiple uses, I think.You'll need to connect only single ground connection, it should be a common reference point of the circuit, remember.Looking at your board layout, only two thing bother me, really: Awfully small trace from the CONN1 ground pin to the groundplane and groundplane width just under the PB6.Bye, Moebius Quote Link to comment Share on other sites More sharing options...
Wise Posted May 5, 2005 Author Report Share Posted May 5, 2005 I know the smal traces, it's just a first draft. By the way the upper two (so as the lower two) pinns of the switch is internaly connected. I'll try moving the CONN's around a little to get bigger groundarea to the bottom left switches. Bye for now /Wise Quote Link to comment Share on other sites More sharing options...
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