GMU:PCB Arts/Ulrike Katzschmann: Difference between revisions

=== "Police Car Badge" ===

File:PCB_Frontside2.png

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Before I explain the backside of my board, I wanted to comment on the components I used for my PCB. Almost all of the parts are SMD components, that have to be mounted only on one side on the board, facing outward. In the case of my project, it is the frontside. The battery holders on the other hand need through holes drilled into the board and copper pads on the backside of the board, so they can be soldered to it. The LEDs I used also need through holes because they are a special type of LEDs, called reverse mount LEDs. They are mounted on the board facing inward. The middle part of the LED is placed into the hole, while the pads of the LEDs still sit on the frontside of the board. With this way they shine through the PCB. I designed it like that because I wanted the side of the PCB board with the actual design to look neat and flat but I also wanted the parts of the layout resembling the siren and headlight to light up/blink.  

File:PCB_Backside 4.png

File:PCB_Backside 5.png

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File:KiCad, 3D-Viewer Backside.png

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As a last step I cut out green, orange, red and blue crafting foil in the shape of the sirenlights, the headlights, the car doors and the hood of the car. I stuck the foil onto the board and with this my badge is finally complete. Now it has all the colors I wanted it to have but I could not create, due to the limited option of layers and colors.