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== [[Projects]] and [[Ideas]] ==
Descriptions, instructions, board layouts, and other documentation for electronics
* [[projects]] and 
* [[ideas]].

Open Circuits is a wiki for sharing [[open source electronics]] knowledge, schematics, board layouts, ports and parts libraries. This include open hardware [[Music Player]]s, [[atomic microscope]]s, [[PC]], [[PDA]] and [[Open Mobile Gadgets|mobile phone]]s, and [[battery|batteries]]. Please help us to build this resource by submitting your component descriptions, projects, techniques, and PCB footprints.

Note than many section title are active links, click on them.

== [[Components]] ==
Lists of components, where to purchase them, how to use them.  For many components there are links to projects using that particular component, this is especially true for microcontrollers, for example follow the links down to PIC microcontrollers and you will find many project links as well as tutorials.

== [[Basic Circuits and Circuit Building Blocks ]] ==
Circuits you will use over and over.

== [[Techniques]] ==
How to do things.

== [[Tutorials]] ==
How to understand and plan what you are doing.  These are for general theory, more specific information is linked to its topic.

== [[PCB Footprints]] ==
Don't reinvent the wheel. Known working open PCB footprints for various components.

== [[Got A Blog, Wiki or Website?]] ==

Link to it on the [[Got A Blog, Wiki or Website?]] or [[WikiNode]] page.

== [[Got a Technical Question?]] ==
Perhaps it will be answered, perhaps not.  Google for it first in the spirt of RTFM.  Please do not ask us to do a school project for you.



== [[Meta Open Source ]] ==
Not projects or information on projects, but stuff about the open source movement ( mostly hardware ) itself.

== [[Open Hardware Initiatives ]] ==
The '''Open Source Movement''', typically covers '''Open Hardware''', '''Open Firmware''', and '''Open Software'''.

'''Open Hardware''' is similar to '''[http://www.gnu.org/philosophy/free-sw.html Free] and [http://www.opensource.org/docs/definition.php Open Source Software]'''.

The '''Open Firmware''' movement provides firmware (i.e.: micro-code specifically related to the subcoding of hardware devices) which you may also know as '''soft-IP''' or '''FPGA''' coding see [http://www.opencores.org Open Cores] for more details.

Excellent examples of Open Hardware projects range from projects at ''OpenCircuits'' to [http://www.ethernut.de Tiny Embedded Ethernet Devices] and [http://www3.elphel.com Advanced & Intelligent Camera Designs] which provide solid-state camera and FPGA assisted hardware designs. A solid overview of projects can also be found at [http://open-innovation-projects.org/project-list/ Open Innovation Projects].

== Licenses ==

The most common "open hardware" licenses are the [http://creativecommons.org/licenses/ Creative Commons Licenses] and the [http://www.gnu.org/copyleft/gpl.html GNU General Public License].
The GNU people wrote the [http://www.gnu.org/licenses/gpl-faq.html#DoesTheGPLAllowMoney the GPL FAQ]
to deal with common questions and misunderstandings of the GPL.
The GNU people go on to say
: "We encourage people who redistribute free software to charge as much as they wish or can. If this seems surprising to you, [http://www.gnu.org/philosophy/selling.html please read on." -- GNU: "Selling Free Software"]

For example, Linksys makes money selling (among other things) their [http://en.wikipedia.org/wiki/Linksys_WRT54G_series Linksys WRT54G series] routers, which use Linux under the GPL license.

To understand what your entitlements and responsibilities are under the applicable license(s); each hardware, firmware and/or software piece you have either copied, modified, developed using tools provided or if you intend distributing your development, you '''MUST''' read each and every license, and be specifically aware that you may not mix such license(s) together unless they can co-exist under one umbrella license. For example you may modify, copy, enhance and distribute parts your project which are all under the same license e.g.: [http://www.gnu.org/copyleft/gpl.html GNU General Public] or [[Open Circuits:Copyrights]].

== Help Us Make Open Circuits Better ==

What are we:

Looks like we are defining this by way of who contributes and what.  I ( [[russ_hensel]] ) am a new member so may or may not have it right.
This is what I think:

*An introduction to Electronic theory, suitable for the hobbyist.

*Guide to locating and using components and tools.

*Details on how to build various projects.

*Building some sense of community among builders.

There are two means of carrying this out:

*Write material for the site or

*Link to material you may have written or have located on the web.  There is so much stuff on the web that lets not write it here unless it is at least somewhat unique. 

What do you think, discuss it here if very general, else on the discussion page ( link at top of page ).

See also:

*[[We love volunteers]]
*[[Help:contents]]
*[[Spam]]  What should we do about it, it is a real problem now ( Feb 08 ).


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