Welcome to the owfs-doc wiki!

OWFS is an easy way to use the powerful 1-wire system of Dallas/Maxim.

It consists of several main components:

• owserver
• OWFS
• owhttpd
• owftpd
• owshell

A typical usage of owfs involves using owserver to talk to the hardware, with the other services, owhttpd, owfs, owftpd, and owshell communicating with owserver to read/write data.

For a walk-through of how this works and how to set it up, please see:

• OWFS usage
• OWFS installation
• OWFS man pages

• owperl
• owcapi
• owpython
• ownet
• ...

Dallas/Maxim manufactures a line of sensors for various applications (see below for list). The sensors are designed to operate on a multi-drop network, many using parasitic power. Each devices is addressed using a unique 64-bit ROM, encoded with its type and function. This makes creating and extending multi-function networks relatively painless.

A summary of 1Wire devices/networks:

• Inexpensive devices, simple wiring, parasitic power
• Unique addresses, individually addressable
• USB, serial and i2c adapters
• Mature technology, consulting and aftermarket support
• iButton steel sealed devices
• 3rd-party designs that extend the proprietary device families

1Wire sensors comprise myriad functionalities. For a complete list, see the [1Wire Device List](1Wire Device List).

Some examples:

• Low-cost digital temperature sensors (see the ever-popular DS18B20)
• Memory (read/write, read-only, combinations)
• Thermocouple temperature
• Humidity
• RTD (via 3rd party)

Here is an image of two DS1995 devices in the popular iButton format:

Here is a page link: Introduction

Userspace low level driver			libusb1)	libusb+libftdi1)
Kernel	w1 subsystem2)	w1 subsystem3)		serio subsystem4)		serio subsystem					parport subsystem	network subsystem
		I2C subsystem	USB subsystem
Onewire host adapters	GPIO DS1WM Matrox	DS2482-100 DS2482-101 DS2482-800 DS2483	DS9490R DS9490S DS2490	USB9097	LinkUSB	LINK LINK12 LINK45 LinkHUB	HA7E HA7S	HA5	DS9097U DS2480	DS9097E passive RS232 adapters	passive parport adapters5)	LinkHubE	HA7NET	OW-SERVER-ENET	ser2net	xport

¹⁾optional. ²⁾only available with the Linux kernel. ³⁾optional, libusb not needed when used. ⁴⁾optional, libusb+libftdi not needed when used. ⁵⁾not supported.