About OHWR

The Open Hardware Repository ohwr.org is a place on the web which was created in 2009 so electronics designers at experimental physics facilities could have a space to collaborate on Open Source Hardware (OSHW) designs, much in the philosophy of the free software movement.

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White Rabbit

White Rabbit provides sub-nanosecond accuracy and picoseconds precision of synchronization for large distributed systems

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Featured Projects

Latest News

White Rabbit

Job vacancy at CERN to work on White Rabbit and RF

We have an open position at CERN to work for 2-3 years on the evolution of the eRTM board. It is a WR node whose jitter (integrated between 100Hz and 20MHz) is less than 100 femtoseconds, the most precise WR node I know of, originally designed by Mattia Rizzi and Tomasz WÅ‚ostowski.

White Rabbit Switch - Software

WR Switch firmware v7.0 release

Dear Rabbits, Following the months of preparation, the WRS firmware v7.0 is now released! We would like to invite you to download, validate it in your installations and ultimately update your switches with it.

White Rabbit core collection

White Rabbit PTP Core v5.0 released

We have just released v5.0 of the WR PTP Core. You can find more details and all the links to download the demo binaries and documentation on our release wiki page