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March 30, 2010
News - HackEDA: Automatic circui…
about 2 years ago
For now there aren’t any because there isn’t a filter based on system voltage in the build tool, which you’d need in order to avoid hooking up peripherals to the wrong voltage.
A temporary workaround would be to select one of the LM317 based regulators (like this one: http://hackeda.com/circuits/3-3v-regulated-supply-jst/), swap the 390 Ohm resistor for a 680 Ohm, and make sure all the peripherals you select will work at 5V.
Check back, it’s there now.
I think one of the best ways to learn circuit design (or anything else) is to start by modifying an example that’s relevant to your interests. My hope is people will use HackEDA that way.
Right now the circuit selections are added side-by-side-by-side until the design is finished. Any design in the library is only allowed connectors on one edge, and as the design is built that edge is aligned to the edge of the board. There are many (MANY) improvements I want to make, and matching the board layout with what you see on the web page is pretty high on the list.
Actually, almost all of the current designs in the library are based on boards by SparkFun (thanks SparkFun!). One thing I think is very important is to make ordering components as straightforward and painless as possible. Because of that, so far I’ve limited everything to only designs that can be sourced completely through Digikey. It’s a pretty big pain on my end, but I think it’s important to avoid multiple vendors, non-existent or volume-restricted parts. There are too many designs like that out there already.
BUT… if HackEDA starts getting traction and SparkFun wanted to load their designs into the library and sell the associated parts kits I’d be all for it.
You may want to have a second look, I think the awesomeness you’re talking about is already there. :)
Free right now on the site: Choose the circuits you’d like included in a schematic, HackEDA will merge them into one file and automatically figure out the right way to connect the nets (names and labels are used to do this, so at first glance it may not look like the individual circuits are connected). All circuits come from known good designs, but the net connections between them need to be tested a bit more before they are trusted 100%.
Through Kickstarter: All that, plus a fully routed layout, bare pcb, or fully assembled pcb are available. All you have to do is pick what you want to go on it.
Eventually… It’s actually possible to upload your own design right now, but the upload process is a little convoluted. And before it can be used it has to be tested by making real circuits with it. I’ll be working to make this process easier as things move along.
That said, if you have a breakout board for your favorite processor already designed and want to make it happen, we could get it in there right now, it just won’t be available for anything but schematic generation for a while (either until I have time to test it, or I find people willing to test boards in exchange for keeping them).
So, as it turns out, magic involves a fair amount of testing to get right. That’s what the Kickstarter is about, and in order to keep the complexity at a manageable level the Atmega328 is where it will start. If you go to the site (www.hackeda.com), you’ll see that there are already 4 processors you can choose from if all you need is a free schematic that hasn’t been verified in hardware yet. Later the other processors will also be available for general use, but not yet, and not through Kickstarter.
No public wish lists :(
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