8.11.09

3PDT DAUGHTER BOARDS

recently i've gotten right sick of trying to jam my nice, thick, 22 gauge, solid core wire into switch contacts.  many times i'd end up marring the insulation, or just not liking the appearance.  a remedy was to design a daughter board to connect all of the wires to the switch.  after a bit of talk with my friends over at FSB, i decided to expand on the idea, and built a few different versions.  V1 is a simple board with connections for each lug on the switch.  V2 has a resistor added for limiting the power to the LED.  version 2.1 adds a pad for connecting DC and the other side of the LED.  finally, V3 adds to this a spot for a power filtering electrolytic capacitor, and polarity protection diode.  in the future i may add more designs, possibly adding R.G. Keen's MOSFET polarity protection scheme, and a voltage divide for use with op amp circuits.  there has also been some talk of making a group buy for printed PCBs.  we'll see if that ever comes to pass in the future.  you can check out all of the layouts and keep abreast of the latest news HERE.


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