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====================================================================== = PCB-Designs = = URL: https://github.com/hmbusch/PCB-Designs = ====================================================================== From time to time I sit down and design some circuitry that can be used for multiple purposes, a component if you will. The designs for these PCBs are stored in this project (or at least those I feel confident to share). Contents ======== ChainableScrew595 ----------------- This design features a small PCB with an 74HC595 shift register at it's heart. Multiple modules of these can be connected together to form a shift register cascade. The register connects to an ULN2803A Darlington Array sink driver whose outputs are available as a 9 port screw header (8 ports + VCC connector). As should be obvious from the design, this module can only be used for sink switching, as it requires fewer and more common parts than a similar design for source switching. EAGLE-Libraries --------------- Contains libraries for use with Cadsoft Eagle. These libraries contain parts and packages I added myself for components that are not contained in the stock libraries. Pixel ----- The Pixel is a small board that puts three 5mm LEDs in series with a SMD resistor to create a larger light source than a single LED. The Pixel is supposed to be powered by 12 Volts and outfitted with three high brightness LEDs. The pixel is a good alternative to power LEDs in terms of price, power consumption and temperature management.