On Mon, Jul 4, 2011 at 7:46 AM, DJ Delorie <[1]d...@delorie.com> wrote:
> I am trying to make my first PCB and I have selected a super-simple circuit > to start with, a 555 astable circuit. It's a single-sided board, and I'm > going to etch it myself - something I've always wanted to try. > > But what footprints do I use for the GND and VCC connections? I guess I > would just like these to be two pads on the PCB. Is there a way to tell > gschem this? Or do I just manually make that change in the pcb program? Usually, you would add one two-pin connector, or two one-pin connectors, for the power connection. There are a range of footprints available for this - if you just want to solder wires to it, HEADER2_1 is sufficient - it's just two pins on 0.1" centers. Would this be done in gschem? Or in pcb? In gschem I have a symbol for gnd, and there is no footprint associated with it. There is another symbol for +5 V. Do I add a connector on gschem and use it instead of then GND/5V symbols? Or do I associate a footprint of HEADER2_1 with each of them? Or with one of them? Thanks for answering beginner questions! Ed References 1. mailto:d...@delorie.com
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