Close

Search

Terms of Use

Effective Date: September 29, 2026

Welcome to [haotianee.com] (the “Website”). By accessing or using this Website, you agree to these Terms of Use. If you do not agree to these terms, please discontinue use of the Website.

1. Purpose of the Website

This Website is a personal hardware engineering portfolio and technical resource. It features original hardware projects, PCB designs, and educational content related to electronics. It also provides information about custom hardware development services and original hardware products, including links to relevant purchasing channels.

All content published on this Website is provided for informational, educational, and portfolio purposes only. Nothing on this Website constitutes a binding offer to provide services or sell products.

Any custom hardware development project or product transaction must be separately agreed upon by the relevant parties in a written agreement or through the applicable sales platform.

2. Intellectual Property

Unless otherwise stated, all original content on this Website, including text, circuit schematics, PCB design files, photographs, test waveforms, technical articles, and other project documentation, is owned by the Website author and is protected by applicable intellectual property laws.

You may access, view, and use this content for personal learning and reference purposes.

Without prior written permission from the copyright owner, you may not reproduce, modify, redistribute, commercially exploit, or republish any original designs, documents, or other protected content from this Website.

Third-party open-source projects and materials, including resources hosted on GitHub, remain the property of their respective authors or rights holders. Such materials are subject to their own applicable licenses and terms. You are responsible for reviewing and complying with those licenses before using or redistributing them.

3. Acceptable Use

When accessing or using this Website, you agree not to:

  • Use automated scraping tools to collect Website content in bulk in a manner that abuses the service, or attempt to attack, disrupt, or damage the Website or its servers.
  • Submit unlawful, infringing, abusive, misleading, or knowingly false content through comments, contact forms, or other communication channels.
  • Impersonate another person or provide misleading identity information when submitting inquiries or project requests.
  • Use any content or resources from this Website for activities that violate applicable laws or regulations in your jurisdiction or the jurisdiction where the relevant activity takes place.

4. Hardware Development Services and Products

4.1 Custom Hardware Development

Project examples, technical specifications, performance descriptions, and other materials displayed on this Website are provided to demonstrate technical capabilities and previous work. They do not constitute a guarantee that any particular project can be delivered with the same specifications, performance, timeline, or results.

For all custom hardware development projects, the scope of work, deliverables, project schedule, fees, acceptance criteria, warranty terms, and other relevant conditions will be determined by a separate written agreement signed by the parties.

4.2 Original Hardware Products

For DIY PCBs, hardware modules, and other products featured on this Website, purchases are handled through Tindie or another sales channel agreed upon by the relevant parties.

This Website provides product information and links to external purchasing platforms. Unless expressly stated otherwise, the Website does not directly process product orders or payments and is not responsible for handling after-sales disputes arising from transactions conducted through third-party sales platforms.

Product availability, pricing, shipping, returns, refunds, and other transaction terms are subject to the applicable seller’s policies and the rules of the relevant sales platform.

4.3 High-Reliability and Regulated Applications

We may provide hardware design services for projects intended for demanding or regulated applications, including automotive, energy storage, and medical-related fields.

Before a project begins, the client must disclose all relevant industry standards, regulatory requirements, certification requirements, and intended operating conditions that may affect the design.

Unless otherwise agreed in a separate written contract, the client is responsible for system-level compliance, product approvals, safety certifications, and any regulatory obligations applicable to the final product.

Project-specific responsibilities, compliance requirements, testing obligations, and acceptance criteria should be expressly documented in the relevant project agreement.

5. Third-Party Links

This Website may contain links to third-party websites and services, including GitHub, online stores, advertising networks, and other external platforms.

These third-party websites operate independently and may be subject to their own terms, policies, and practices. We do not control and do not guarantee the accuracy, availability, quality, or security of their content, services, or products.

To the extent permitted by applicable law, we are not responsible for the content, services, products, or transactions provided by third parties. Any interaction or transaction with a third party is subject to the terms and conditions applicable to that third party.

6. Changes to These Terms

We reserve the right to update or revise these Terms of Use from time to time. Updated terms will be published on this page and will take effect upon publication, unless otherwise stated or required by applicable law.

We encourage you to review this page periodically. Where required by applicable law, additional notice or consent will be provided for relevant changes.

7. Contact Us

If you have any questions about these Terms of Use, please contact us through the contact details or contact form provided on this Website.