OWFS -- 1-Wire file system. Use the Dallas 1-Wire and iButton chips with standard filesystem commands. Create temperature loggers. Monitor everything. OWHTTPD -- same system, only used as a light weight web server. OWFS is also ported to embedded routers, Mac OSX and Windows.

Basically you can use these inexpensive little sensors and other chips with very simple wiring to sense and control the physical environment. The interface is very flexible -- everything from a web browser, to read and writing directly to the chip's "file" to integrating with your programs -- even over the internet.

There is a growing number of 1-wire sensors: temperature, voltage, humidity, light, ultraviolet, pressure, thermisters, thermocouples, programmable microcontrollers, relays, lights, LCD panels, etc.


  • Support for most 1-wire chips, including new 3rd party offerings
  • Seamlessly use multiple 1-wire chips and bus masters
  • Linux, Mac OSX, Windows, BSD, embedded routers all supported

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User Reviews

  • Straightforward & reliable.

  • Installed OWFS and OWFS worked instantly : very good. I am using OWFS on a some Raspberry Pis (Raspi). On top of OWFS there is node.js, owfs.js, ccu.IO and the owfs adapter. Therefore it is very convenient to use port 2121 and a browser to check, whether the 1 Wire sensors still work, or something else broke in between. So far the OWFS never failed ! Only I would like to see the temperatures directly on the 2121 page, if there is a 1 wire device with temperature information is shown, ;-) . Very selfish, I know. Everybody, including maybe me, could add this feature to the code.

  • Thanks for great project! Simply the best.Good,good,good.+1

  • very good project, thanks!

  • very good project, thanks!

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Additional Project Details



Intended Audience

Information Technology, Science/Research, Manufacturing, Advanced End Users, System Administrators, Developers

User Interface

Web-based, Non-interactive (Daemon), Command-line

Programming Language

Unix Shell, Python, Perl, C, PHP, Tcl