> If you thought you bought a motherboard > from Ettus under the terms that you were getting schematics and PCB > files and blah blah blah, fine. If you didn't get them, point to the > line item on the receipt or the clause in the contract and take it up > with Ettus.
I don't understand why people are complaining that the Ettus Research board designs aren't free. They are free. Matt publicly announced that he intended to release them under the GPL. Right up to this day, the schematics (in PDF) are trivially downloadable from http://www.ettus.com by clicking "Download" on the homepage. Even the schematics for their brand-new products like the N210. Now I will admit that in the past, Matt and Ettus Research provided not just PDF schematics (that you'd have to re-enter manually into a schematics editor) but also netlists, ".sch" files, a BOM, etc. They never published layout files for directly making your own boards. I don't know when or why the policy changed, and all that were left were PDF schematics. "Printed" PDF schematics certainly don't qualify as the source code under the GPL (which defines source code as the preferred format for making modifications). There was some discussion on the list at the time of the National Instruments acquisition, in which Matt basically said, sorry, was reorganizing the web site and mislaid 'em. Does anyone know if they ever came back after that point? Being less of a trust-the-web kind of guy than some (after being burned by various things disappearing on me), I saved a copy of the original USRP1 schematics from its 2005 release: Date: Wed, 12 Jan 2005 11:45:10 -0800 From: Matt Ettus <m...@ettus.com> To: discuss-gnuradio@gnu.org Subject: [Discuss-gnuradio] USRP schematics and layouts I have posted the USRP and daughterboard schematics and layouts on http://www.ettus.com -- just go to the download page. If you are interested in making your own daughterboards, these will serve as a good reference. More docs will be forthcoming. If you want a copy of those schematics, I've put a copy here: http://www.toad.com/gnuradio/usrp-mboard-20050112_tar.gz http://www.toad.com/gnuradio/basic-dboard-20050112_tar.gz http://www.toad.com/gnuradio/parts-20050112_tar.gz I'm sure that many tweaks to the boards have been made since then. If you want to make serious use of these, you'd better compare them to both the current published PDF schematics, and to a recent physical board. At the time these were published, the USRP was new and it had very few daughterboards. By the way, the USRP board took well over a year to develop, and went through several prototypes. Large parts of the free GPL'd GNU Radio software were developed by Matt and Eric simultaneously while building these prototypes. Before the USRP, you needed an expensive and painful PCI oscilloscope board to use GNU Radio -- and then you needed an external tuner. That's what we got the original GNU Radio FM-radio and HDTV receivers working on. The USRP revolutionized ham SDR by being half the price of the PCI board, allowing laptops instead of only desktop computers to be used for the processing, and allowing many cheap RF daughterboards to be made. John Gilmore _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio