Some components here are missed from DipTrace standard libraries or at least were missed prior to DipTrace 3. If nothing happens, download the GitHub extension for Visual Studio and try again.
If nothing happens, download Xcode and try again. If nothing happens, download GitHub Desktop and try again.
Time to add something to it.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. I believe I used the ATMega Do a search for the AVR app note. You can use any chips listed in on the Data Sheet for pin compatibles. Even less time when you just duplicate some component with the same number of pins and then just edit them accordingly in the Pin Manager, and going from the DataSheet of the component in question will ensure that you have a component you can then use over and over again from that point. Making just the Atmega component is fairly easy, and version 2.
Nothing beats a pencil and some graph paper for a rough draft also, then going from that to a much better schematic in DipTrace is an even easier step. So doing the prototyping on the Arduino board, and then going in DipTrace from the Atmega chip up is the way to go there for making up your schematic and then a final PCB version.
Using diptrace - PCB layout - Designing the board Going from strictly the component level up is more where you'll find that PCB design tools are geared. I haven't used Eagle much except for viewing other files created in it, but I doubt they have prototyping boards already made up in there either. The thing with an Arduino board is that it has more than just the chip on it, it's already a PCB, so you'd have to make your own component that either encompassed all of that, or at least had the core pinouts of it. Most Arduino users seem to use Eagle, but DipTrace looks easier to use and the price is great. Are there any files in DipTrace format to help me get started, like a basic board? I could not find any.