Dog Blocker Surface Mount PCB

May 9th, 2013

Surface mount board design has gone through several iterations. Changed the design to have two 3mm LEDs instead of one at 5mm. This change results in a brighter alarm flasher, wider viewing angles, a little cheaper and no additional components (added an LED, subtracted a resistor). v0.91c of the surface mount board is 1.34" x 0.91" - 1.22in2. The surface mount board includes mounting for both acoustic transducers, both LEDs, programming port, connection for power and infrared sensor. This makes the board much larger than it could be without the mounting areas. But will greatly simplify assembly, thus lowering cost.
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