The hardware design files for the Iowa Scaled Engineering ARD-DCCSHIELD are
open hardware, and licensed under the Creative Commons Attribution-Share
Alike license.

A copy can be found below, or from 
  http://creativecommons.org/licenses/by-sa/4.0/legalcode
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Creative Commons Attribution-ShareAlike 4.0 International Public License

By exercising the Licensed Rights (defined below), You accept and agree to
be bound by the terms and conditions of this Creative Commons
Attribution-ShareAlike 4.0 International Public License ("Public License").
To the extent this Public License may be interpreted as a contract, You are
granted the Licensed Rights in consideration of Your acceptance of these
terms and conditions, and the Licensor grants You such rights in
consideration of benefits the Licensor receives from making the Licensed
Material available under these terms and conditions.

Section 1 – Definitions.

    Adapted Material means material subject to Copyright and Similar Rights
that is derived from or based upon the Licensed Material and in which the
Licensed Material is translated, altered, arranged, transformed, or
otherwise modified in a manner requiring permission under the Copyright and
Similar Rights held by the Licensor. For purposes of this Public License,
where the Licensed Material is a musical work, performance, or sound
recording, Adapted Material is always produced where the Licensed Material
is synched in timed relation with a moving image.
    Adapter's License means the license You apply to Your Copyright and
Similar Rights in Your contributions to Adapted Material in accordance with
the terms and conditions of this Public License.
    BY-SA Compatible License means a license listed at
creativecommons.org/compatiblelicenses, approved by Creative Commons as
essentially the equivalent of this Public License.
    Copyright and Similar Rights means copyright and/or similar rights
closely related to copyright including, without limitation, performance,
broadcast, sound recording, and Sui Generis Database Rights, without regard
to how the rights are labeled or categorized. For purposes of this Public
License, the rights specified in Section 2(b)(1)-(2) are not Copyright and
Similar Rights.
    Effective Technological Measures means those measures that, in the
absence of proper authority, may not be circumvented under laws fulfilling
obligations under Article 11 of the WIPO Copyright Treaty adopted on
December 20, 1996, and/or similar international agreements.
    Exceptions and Limitations means fair use, fair dealing, and/or any
other exception or limitation to Copyright and Similar Rights that applies
to Your use of the Licensed Material.
    License Elements means the license attributes listed in the name of a
Creative Commons Public License. The License Elements of this Public License
are Attribution and ShareAlike.
    Licensed Material means the artistic or literary work, database, or
other material to which the Licensor applied this Public License.
    Licensed Rights means the rights granted to You subject to the terms and
conditions of this Public License, which are limited to all Copyright and
Similar Rights that apply to Your use of the Licensed Material and that the
Licensor has authority to license.
    Licensor means the individual(s) or entity(ies) granting rights under
this Public License.
    Share means to provide material to the public by any means or process
that requires permission under the Licensed Rights, such as reproduction,
public display, public performance, distribution, dissemination,
communication, or importation, and to make material available to the public
including in ways that members of the public may access the material from a
place and at a time individually chosen by them.
    Sui Generis Database Rights means rights other than copyright resulting
from Directive 96/9/EC of the European Parliament and of the Council of 11
March 1996 on the legal protection of databases, as amended and/or
succeeded, as well as other essentially equivalent rights anywhere in the
world.
    You means the individual or entity exercising the Licensed Rights under
this Public License. Your has a corresponding meaning.

Section 2 – Scope.

    License grant.
        Subject to the terms and conditions of this Public License, the
Licensor hereby grants You a worldwide, royalty-free, non-sublicensable,
non-exclusive, irrevocable license to exercise the Licensed Rights in the
Licensed Material to:
            reproduce and Share the Licensed Material, in whole or in part;
and
            produce, reproduce, and Share Adapted Material.
        Exceptions and Limitations. For the avoidance of doubt, where
Exceptions and Limitations apply to Your use, this Public License does not
apply, and You do not need to comply with its terms and conditions.
        Term. The term of this Public License is specified in Section 6(a).
        Media and formats; technical modifications allowed. The Licensor
authorizes You to exercise the Licensed Rights in all media and formats
whether now known or hereafter created, and to make technical modifications
necessary to do so. The Licensor waives and/or agrees not to assert any
right or authority to forbid You from making technical modifications
necessary to exercise the Licensed Rights, including technical modifications
necessary to circumvent Effective Technological Measures. For purposes of
this Public License, simply making modifications authorized by this Section
2(a)(4) never produces Adapted Material.
        Downstream recipients.
            Offer from the Licensor – Licensed Material. Every recipient of
the Licensed Material automatically receives an offer from the Licensor to
exercise the Licensed Rights under the terms and conditions of this Public
License.
            Additional offer from the Licensor – Adapted Material. Every
recipient of Adapted Material from You automatically receives an offer from
the Licensor to exercise the Licensed Rights in the Adapted Material under
the conditions of the Adapter’s License You apply.
            No downstream restrictions. You may not offer or impose any
additional or different terms or conditions on, or apply any Effective
Technological Measures to, the Licensed Material if doing so restricts
exercise of the Licensed Rights by any recipient of the Licensed Material.
        No endorsement. Nothing in this Public License constitutes or may be
construed as permission to assert or imply that You are, or that Your use of
the Licensed Material is, connected with, or sponsored, endorsed, or granted
official status by, the Licensor or others designated to receive attribution
as provided in Section 3(a)(1)(A)(i).

    Other rights.
        Moral rights, such as the right of integrity, are not licensed under
this Public License, nor are publicity, privacy, and/or other similar
personality rights; however, to the extent possible, the Licensor waives
and/or agrees not to assert any such rights held by the Licensor to the
limited extent necessary to allow You to exercise the Licensed Rights, but
not otherwise.
        Patent and trademark rights are not licensed under this Public
License.
        To the extent possible, the Licensor waives any right to collect
royalties from You for the exercise of the Licensed Rights, whether directly
or through a collecting society under any voluntary or waivable statutory or
compulsory licensing scheme. In all other cases the Licensor expressly
reserves any right to collect such royalties.

Section 3 – License Conditions.

Your exercise of the Licensed Rights is expressly made subject to the
following conditions.

    Attribution.

        If You Share the Licensed Material (including in modified form), You
must:
            retain the following if it is supplied by the Licensor with the
Licensed Material:
                identification of the creator(s) of the Licensed Material
and any others designated to receive attribution, in any reasonable manner
requested by the Licensor (including by pseudonym if designated);
                a copyright notice;
                a notice that refers to this Public License;
                a notice that refers to the disclaimer of warranties;
                a URI or hyperlink to the Licensed Material to the extent
                reasonably practicable;
            indicate if You modified the Licensed Material and retain an
indication of any previous modifications; and
            indicate the Licensed Material is licensed under this Public
License, and include the text of, or the URI or hyperlink to, this Public
License.
        You may satisfy the conditions in Section 3(a)(1) in any reasonable
manner based on the medium, means, and context in which You Share the
Licensed Material. For example, it may be reasonable to satisfy the
conditions by providing a URI or hyperlink to a resource that includes the
required information.
        If requested by the Licensor, You must remove any of the information
required by Section 3(a)(1)(A) to the extent reasonably practicable.
    ShareAlike.

    In addition to the conditions in Section 3(a), if You Share Adapted
Material You produce, the following conditions also apply.
        The Adapter’s License You apply must be a Creative Commons license
with the same License Elements, this version or later, or a BY-SA Compatible
License.
        You must include the text of, or the URI or hyperlink to, the
Adapter's License You apply. You may satisfy this condition in any
reasonable manner based on the medium, means, and context in which You Share
Adapted Material.
        You may not offer or impose any additional or different terms or
conditions on, or apply any Effective Technological Measures to, Adapted
Material that restrict exercise of the rights granted under the Adapter's
License You apply.

Section 4 – Sui Generis Database Rights.

Where the Licensed Rights include Sui Generis Database Rights that apply to
Your use of the Licensed Material:

    for the avoidance of doubt, Section 2(a)(1) grants You the right to
extract, reuse, reproduce, and Share all or a substantial portion of the
contents of the database;
    if You include all or a substantial portion of the database contents in
a database in which You have Sui Generis Database Rights, then the database
in which You have Sui Generis Database Rights (but not its individual
contents) is Adapted Material, including for purposes of Section 3(b); and
    You must comply with the conditions in Section 3(a) if You Share all or
a substantial portion of the contents of the database.

For the avoidance of doubt, this Section 4 supplements and does not replace
Your obligations under this Public License where the Licensed Rights include
other Copyright and Similar Rights.

Section 5 – Disclaimer of Warranties and Limitation of Liability.

    Unless otherwise separately undertaken by the Licensor, to the extent
possible, the Licensor offers the Licensed Material as-is and as-available,
and makes no representations or warranties of any kind concerning the
Licensed Material, whether express, implied, statutory, or other. This
includes, without limitation, warranties of title, merchantability, fitness
for a particular purpose, non-infringement, absence of latent or other
defects, accuracy, or the presence or absence of errors, whether or not
known or discoverable. Where disclaimers of warranties are not allowed in
full or in part, this disclaimer may not apply to You.
    To the extent possible, in no event will the Licensor be liable to You
on any legal theory (including, without limitation, negligence) or otherwise
for any direct, special, indirect, incidental, consequential, punitive,
exemplary, or other losses, costs, expenses, or damages arising out of this
Public License or use of the Licensed Material, even if the Licensor has
been advised of the possibility of such losses, costs, expenses, or damages.
Where a limitation of liability is not allowed in full or in part, this
limitation may not apply to You.

    The disclaimer of warranties and limitation of liability provided above
shall be interpreted in a manner that, to the extent possible, most closely
approximates an absolute disclaimer and waiver of all liability.

Section 6 – Term and Termination.

    This Public License applies for the term of the Copyright and Similar
Rights licensed here. However, if You fail to comply with this Public
License, then Your rights under this Public License terminate automatically.

    Where Your right to use the Licensed Material has terminated under
Section 6(a), it reinstates:
        automatically as of the date the violation is cured, provided it is
cured within 30 days of Your discovery of the violation; or
        upon express reinstatement by the Licensor.
    For the avoidance of doubt, this Section 6(b) does not affect any right
the Licensor may have to seek remedies for Your violations of this Public
License.
    For the avoidance of doubt, the Licensor may also offer the Licensed
Material under separate terms or conditions or stop distributing the
Licensed Material at any time; however, doing so will not terminate this
Public License.
    Sections 1, 5, 6, 7, and 8 survive termination of this Public License.

Section 7 – Other Terms and Conditions.

    The Licensor shall not be bound by any additional or different terms or
conditions communicated by You unless expressly agreed.
    Any arrangements, understandings, or agreements regarding the Licensed
Material not stated herein are separate from and independent of the terms
and conditions of this Public License.

Section 8 – Interpretation.

    For the avoidance of doubt, this Public License does not, and shall not
be interpreted to, reduce, limit, restrict, or impose conditions on any use
of the Licensed Material that could lawfully be made without permission
under this Public License.
    To the extent possible, if any provision of this Public License is
deemed unenforceable, it shall be automatically reformed to the minimum
extent necessary to make it enforceable. If the provision cannot be
reformed, it shall be severed from this Public License without affecting the
enforceability of the remaining terms and conditions.
    No term or condition of this Public License will be waived and no
failure to comply consented to unless expressly agreed to by the Licensor.
    Nothing in this Public License constitutes or may be interpreted as a
limitation upon, or waiver of, any privileges and immunities that apply to
the Licensor or You, including from the legal processes of any jurisdiction
or authority.