![]() ![]() This will immediately clear up a lot of clutter in the schematic. * Use power ports instead of wires for gnd and supply nets. This is hugely confusing to anyone reading your schematic, including you when you come back to this schematic in a week. ![]() * That can't be the right symbol for the MCU, either. You appear to be using battery symbols for headers and for crystals. * Use reasonable schematic symbols for components. ![]() Read the datasheet for the FT232 and follow all of its guidelines for layout and support components exactly. Decoupling caps need to be mounted as close as possible to the IC supply pins to be effective * Also there appear to be no decoupling caps dedicated to the FT232. Some things in no particular order: * While you have decoupling capacitors, they are way too far away to be doing their jobs. But that's okay, you said you're a beginner, and people here can help you learn. Your schematic and layout both need a LOT of work. ![]()
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