By using this site you are agreed with our Terms of Service
Effective Date: 9 September 2026
Last Updated: 9 September 2026
Welcome to TheoryCircuit.com. Please spend a few minutes reading this page before you use the website. It explains what you can expect from us, what we expect from you, who owns what, and — importantly for an electronics site — where our responsibility ends and yours begins.
By visiting TheoryCircuit.com, creating an account, leaving a comment, downloading source code, or building any project published here, you agree to these Terms of Service. If you do not agree with any part of them, please stop using the website.
Some sections of the website may carry their own additional rules — a contest, a download, a course, or a submitted-project feature, for example. Where those extra rules are published, they apply in addition to this page.
1. Definitions
To keep this document readable, these words are used throughout:
| Term | Meaning |
|---|---|
| “Website”, “we”, “us”, “our” | TheoryCircuit.com and its owner |
| “You”, “your”, “user” | Any person who visits, reads, registers on, or otherwise uses this website |
| “Content” | Articles, tutorials, circuit diagrams, schematics, images, source code, videos, calculators, and every other material published by us |
| “User Content” | Comments, questions, code, images, or any other material that you submit to the website |
| “Services” | Everything the website offers: tutorials, tools, calculators, downloads, accounts, and comment features |
2. About This Website
TheoryCircuit.com is an educational website. We publish electronics tutorials, circuit diagrams, working principles, component descriptions, embedded systems projects, source code, and reference material for students, hobbyists, makers, and practising engineers.
Everything here is published for educational and informational purposes only. It is not professional engineering advice, and it is not a replacement for a qualified engineer, a licensed electrician, or the manufacturer’s official datasheet.
3. Acceptance of These Terms
By using this website you confirm that:
- You have read, understood, and agreed to these Terms of Service.
- You have read and accepted our Privacy Policy and our Disclaimer, both of which form part of these terms.
- You are legally capable of entering into a binding agreement in your country.
- You will use the website only for lawful purposes.
These terms apply to every visitor, whether you hold an account or not.
4. Eligibility and Age Requirement
You must be at least 13 years old to use this website, and at least 18 years old — or the age of majority in your country — to create an account or submit content.
If you are under 18, you may use this website and build the projects published here only under the direct supervision of a parent, guardian, teacher, or another responsible adult. Many of these projects involve tools, heat, and electricity that are not safe for unsupervised minors.
5. Your Licence to Use This Website
We give you a personal, limited, non-exclusive, non-transferable, and revocable permission to access and read this website for your own learning, study, teaching, and non-commercial project work. This permission can be withdrawn at any time if these terms are broken.
That permission does not extend to the following. You may not:
| Restriction | In plain words |
|---|---|
| Commercial exploitation | Sell, rent, sublicense, host, mirror, or monetise our articles and diagrams as your own product or service |
| Bulk copying | Copy, republish, redistribute, or repost our articles, images, or diagrams — in whole or in substantial part — on any website, blog, YouTube channel, PDF, app, ebook, printed book, or paid course |
| Scraping | Use bots, crawlers, spiders, scrapers, downloaders, or AI training pipelines to harvest our content in bulk |
| Cloning | Use our content, structure, or article library to build a competing electronics tutorial website |
| Stripping credit | Remove or obscure watermarks, author credits, source links, or copyright notices from anything you are permitted to use |
| Reverse engineering | Decompile, disassemble, or reverse engineer any part of the website, its code, or its tools |
Any new feature, tool, calculator, or section we add to the website later is covered by these same terms.
6. Accounts, Google Sign-In and GitHub Sign-In
Some parts of the website may require an account. You can register directly with your email address, or you can use the “Continue with Google” or “Continue with GitHub” option on our login page.
When you sign in with Google, we receive only your basic profile information — your name, email address, profile picture, and Google account ID. We never receive your Google password, and we never gain access to your Gmail, Drive, Contacts, Photos, or any other Google service. You can revoke this access at any time from your Google Account permissions page.
When you sign in with GitHub, we receive only your basic profile information — your name, username, verified email address, profile picture, and GitHub account ID. We never receive your GitHub password, and we never gain access to your repositories, gists, organisations, or any other part of your GitHub account. You can revoke this access at any time from your GitHub authorised applications settings.
A social sign-in is used only to identify you and to create or open your account here. We match you by the email address the provider has verified; if that address is not verified with them, sign-in will not complete. What we then store, and for how long, is set out in our Privacy Policy.
If you hold an account with us, you agree that:
- The information you give us is accurate and kept up to date.
- You are responsible for everything that happens under your account.
- You will keep your login details private and will not share your account.
- You will tell us immediately if you suspect someone else is using your account.
- You will not create multiple accounts to get around a suspension or to manipulate comments.
We may suspend or delete any account, at any time, if we believe these terms have been broken.
7. Acceptable Use Policy
Here is a straightforward summary of what is allowed and what is not:
| You may | You may not |
|---|---|
| Read, study, and learn from every article published here | Copy whole articles and republish them elsewhere |
| Build any project for personal, educational, or classroom use | Scrape the site with bots or automated tools |
| Use our published source code in your own projects | Sell or license our content as your own |
| Share a link to any article anywhere you like | Remove watermarks, credits, or copyright notices |
| Quote a short extract with clear credit and a link back | Post viruses, malware, or malicious links in comments |
| Print an article for your own or classroom reference | Spam, advertise, or harvest email addresses from the site |
| Ask genuine technical questions in the comments | Attempt to hack, overload, or damage the website |
You additionally agree not to submit or transmit anything that is unlawful, threatening, abusive, harassing, defamatory, deliberately misleading, obscene, hateful, or harmful to children, and not to post material that infringes anyone else’s copyright, trademark, privacy, or other rights.
You also agree not to use this website to design, build, or support anything illegal or dangerous — including weapons, surveillance devices used without consent, signal jammers, electricity-meter tampering circuits, or any equipment prohibited by the laws of your country.
We may review, edit, or remove any User Content, restrict or close any account, and where the law requires it, report serious matters to the appropriate authorities.
8. Intellectual Property Rights
All content published on TheoryCircuit.com — articles, tutorials, text, circuit diagrams, schematics, PCB layouts, illustrations, photographs, tables, videos, calculators, and the design and layout of the website itself — belongs to TheoryCircuit.com and its owner, and is protected under the Copyright Act, 1957 (India) and international copyright law.
Nothing in these terms transfers any ownership, title, or intellectual property right to you. You receive only the limited permission to read and use the website described in Section 5. Every right not expressly given here is reserved.
Source code published in our tutorials may be freely used, modified, and included in your own personal, educational, or commercial projects, unless a different licence is stated inside the code itself. You do not need to ask permission to use the code. You may not, however, publish our code as a standalone tutorial, article, or paid product of your own.
Teaching use: Teachers and lecturers may use our articles and diagrams in classroom teaching, provided TheoryCircuit.com is clearly credited.
If you want to use our content in a way not covered above, please write to us. We usually say yes when proper credit and a link are given.
9. Your Comments and Submitted Content
You are welcome to leave comments, ask questions, and share your build results.
You remain the owner of everything you submit. You are also entirely responsible for it, and you carry the risk that comes with publishing it. When you submit User Content, you confirm that it is your own work or that you have the right to share it, and that it does not infringe anyone else’s rights or break our Acceptable Use Policy.
By submitting User Content, you give us a non-exclusive, royalty-free, worldwide licence to store, display, reproduce, moderate, edit for length or clarity, and translate that content for the purpose of running and promoting this website. You keep the right to use your own content anywhere else.
Please note:
- We do not back up User Content, and we are not obliged to. Keep your own copy of anything you care about.
- Comments may be edited or deleted at any time, without notice and without explanation, if they are spam, advertising, abusive, plagiarised, off-topic, self-promotional, or contain malicious links.
- You must not present your comment in a way that suggests it is written, sponsored, endorsed, or verified by us.
- Comments express the views of whoever wrote them. We do not verify, endorse, or take responsibility for technical advice given by other users.
10. Feedback and Suggestions
If you send us a suggestion — a topic idea, a correction, a feature request, or an improvement to the site — we may use it freely, without any obligation to you and without payment or credit, unless we have agreed otherwise in writing beforehand. Please do not send us anything you consider confidential or commercially sensitive.
11. Trademarks and Third-Party Components
Product names, component names, brand names, and logos mentioned on this website — such as Arduino, ESP32, ESP8266, Raspberry Pi, and STM32 — belong to their respective owners. They are named here for identification and educational purposes only.
TheoryCircuit.com is not affiliated with, endorsed by, sponsored by, or officially connected to any of these companies unless an article clearly states otherwise. You may not use any of these marks, or ours, without permission from the owner.
Always check the manufacturer’s official datasheet before using any component in a real design. Where our article and the datasheet disagree, the datasheet is correct.
12. Electrical Safety and Project Risk
This is the most important section on this page. Please read it carefully. It sits alongside our full Disclaimer.
Electronics carries real physical risk. The projects, circuits, and code published on this website are educational reference material. They are not finished, tested, certified, or production-ready products.
By building any project described here, you accept that:
- You build entirely at your own risk. You are responsible for your own safety and for the safety of everyone around you.
- Working with mains voltage (110V / 230V AC) is dangerous and can be fatal. It should be attempted only by a qualified and licensed electrician, using proper isolation, enclosure, earthing, and protection.
- Soldering irons, hot air stations, drills, and hand tools cause burns, fires, and injury.
- Lithium-ion and lithium-polymer batteries can overheat, vent, catch fire, or explode if charged incorrectly, shorted, punctured, or over-discharged.
- Wrong connections, reversed polarity, incorrect component values, or an inadequate power supply can permanently destroy your components, development boards, computer, and test equipment.
- Lasers, high-brightness LEDs, high-voltage modules, RF transmitters, and motors each carry their own specific hazards.
- Radio frequency, transmission power, and spectrum use are regulated differently in every country. Complying with your local regulations is your responsibility.
Always double-check your wiring before applying power, verify pin numbers against the current datasheet, use appropriate fuses and current limiting, work on a non-conductive surface, wear eye protection when soldering or cutting, and keep a fire extinguisher nearby when working with batteries or mains power.
We accept no responsibility for injury, death, fire, property damage, damaged components, lost data, failed academic projects, or financial loss arising from anything you build or attempt based on the content of this website.
13. Accuracy of Content
We put real effort into testing our circuits and verifying our explanations. Even so, we cannot guarantee that every article is complete, current, and free of error.
Component specifications change. Manufacturers revise datasheets and discontinue parts. Libraries, IDEs, and board packages are updated, and code that worked when it was written may need modification later. Typing mistakes happen.
Content is provided “as is”, with no warranty of accuracy, completeness, or fitness for any particular purpose. Verify every circuit against the official datasheet and your own judgement before relying on it — especially before using it in an academic submission, a commercial product, or any safety-related application.
If you find a mistake, please tell us. We correct errors as quickly as we can.
14. Advertising, Cookies, and Affiliate Links
This website is free to read and is funded by advertising and affiliate income.
We display advertisements through Google AdSense and other advertising partners. Like most websites, we use cookies and similar technologies to remember your preferences, understand which pages are read, and serve advertising. Google and our other partners may set their own cookies, including for personalised advertising based on your browsing across the web.
You can control or refuse advertising cookies through your browser settings and through Google’s own Ads Settings page. Each advertising partner operates under its own privacy policy, which governs how it handles your data. Our Privacy Policy explains the full picture, including which cookies we use and how to opt out.
Some articles contain affiliate links to component suppliers and online stores. If you buy through one of these links, we may earn a small commission at no extra cost to you. This never influences which components we recommend or how we describe them.
We are not responsible for the products, prices, delivery, warranty, or after-sales service of any advertiser or store. Any purchase you make is entirely a transaction between you and that seller.
15. External Links and Third-Party Advertisements
This website links to third-party websites, datasheets, software downloads, code repositories, and video content, and displays advertisements served by third parties.
We do not control any of these, and we do not review, monitor, or endorse them. We are not responsible for their content, accuracy, downloads, availability, security, or privacy practices. Clicking a link or an advertisement is at your own risk, and once you leave our site the other party’s terms and privacy policy apply.
Please use ordinary caution before downloading files or entering personal details on any external site.
16. Interactions With Other Users
Any dealings you have with another user of this website — technical discussion in the comments, sharing code, exchanging contact details, or arranging anything privately — are strictly between you and that person.
We do not control other users, we do not verify their claims or their expertise, and we are not responsible for any loss, damage, or dispute arising from those interactions. If a disagreement arises between you and another user, we are under no obligation to become involved, though we may moderate comments where our Acceptable Use Policy is broken.
17. Privacy
Your use of this website is also governed by our Privacy Policy, which explains what information we collect, why we collect it, how cookies are used, who we share data with, and how you can request access to or deletion of your data. Please read it alongside these terms.
18. No Obligation to Provide Support
This website is offered as free educational material. We are happy to answer questions in the comments when time allows, and we do try to help, but we are under no obligation to provide technical support, debugging assistance, project guidance, custom circuit design, or academic help — whether requested through comments, email, or any other channel.
Not receiving a reply does not entitle you to any refund, remedy, or claim.
19. Service Availability and Changes
We aim to keep TheoryCircuit.com available at all times, but we do not guarantee uninterrupted access.
The website may be temporarily unavailable because of hosting issues, maintenance, updates, security incidents, or events beyond our control. We may also add, change, restrict, remove, or discontinue any article, feature, tool, or service at any time, without prior notice and without any liability to you or to any third party.
20. Disclaimer of Warranties
The website, its content, and all services are provided on an “as is” and “as available” basis, without warranties of any kind, whether express, implied, or statutory.
To the fullest extent the law allows, we disclaim all warranties, including implied warranties of merchantability, fitness for a particular purpose, title, accuracy, non-infringement, and uninterrupted or error-free operation. We do not warrant that the website will meet your requirements, that it will be secure or free of viruses, or that any defect will be corrected.
Some countries do not allow certain warranties to be excluded. Where that is the case, this section applies to you only to the extent permitted by the law that governs you, and nothing here removes any right you hold that cannot legally be given up.
21. Limitation of Liability
To the maximum extent permitted by applicable law, TheoryCircuit.com, its owner, and its contributors shall not be liable for any direct, indirect, incidental, special, consequential, exemplary, or punitive damages arising from your use of — or inability to use — this website or anything published on it.
This includes, without limitation, personal injury, death, fire, electric shock, property damage, damaged or destroyed components and equipment, data loss, project failure, academic loss, business interruption, and loss of profits or revenue, whether based on contract, negligence, or any other legal theory, and whether or not we were told such damage was possible.
Access to and use of this website is at your own discretion and risk. You alone are responsible for any damage to your equipment or loss of data that results.
22. Indemnification
You agree to indemnify, defend, and hold harmless TheoryCircuit.com and its owner from any claim, demand, loss, liability, damage, cost, or expense — including reasonable legal fees — arising from your use of the website, your User Content, your breach of these terms, or your violation of any law or third-party right.
We will make reasonable efforts to notify you of any such claim, and you agree to cooperate in defending it.
23. Copyright Complaints and Takedown Requests
We respect other people’s intellectual property, and we ask our users to do the same.
If you believe that any content on this website infringes your copyright, please write to us with the following, and we will investigate promptly:
- Your name, email address, and contact details.
- The exact URL on TheoryCircuit.com where the material appears.
- A description of the original work and proof that you own the rights to it, or the authority to act for the owner.
- A statement that you believe in good faith that the use is not authorised by you, your agent, or the law.
- Your signature, physical or electronic.
Where a complaint is valid, we will remove or disable access to the material. We will also close the accounts of users who repeatedly infringe the rights of others.
If you believe your own content was removed in error, contact us with an explanation and we will review the decision.
24. Grievance Officer
In accordance with the Information Technology Act, 2000 and the rules made under it, complaints about content on this website may be sent to:
Grievance Officer: Riyazdeen
Email: info@theorycircuit.com
Location: Tamil Nadu, India
We aim to acknowledge complaints within 24 hours and to resolve them within 15 days of receipt.
25. Termination
These terms stay in force for as long as you use the website.
We may suspend or end your access to the website, or to your account, at any time and at our discretion — particularly where these terms have been broken, or where we believe your conduct may harm the website, its users, or its reputation. When an account is closed, the User Content linked to it may be deleted from our live systems.
You may stop using the website at any time and may ask us to delete your account, or delete it yourself from your profile page.
The sections covering intellectual property, User Content licences, disclaimers, limitation of liability, and indemnification remain in effect after any termination.
26. Changes to These Terms
We may update these Terms of Service from time to time to reflect changes in our services, our practices, or the law. The revised version will be posted on this page with a new “Last Updated” date.
Where a change is significant, we will make a reasonable effort to notify registered users. Continuing to use the website after changes are published means you accept the revised terms, so please check this page occasionally.
27. International Users
This website is operated from India and is written for readers everywhere. Electronics is a global subject, and our tutorials are read in every country.
If you access this website from outside India, you do so on your own initiative and you are responsible for complying with the laws that apply where you are. That includes, in particular, radio frequency and transmission regulations, electrical wiring and installation codes, import restrictions on components, and any local rules governing drones, lasers, RF transmitters, and high-voltage equipment. A circuit that is perfectly legal to build in one country may not be in another.
Nothing on this website is offered where it would be unlawful to offer it. Where the mandatory consumer protection or data protection law of your own country gives you rights that cannot be contracted away, those rights stand, and these terms apply to you only as far as your local law permits.
28. Governing Law and Jurisdiction
These Terms of Service are governed by the laws of India, including the Information Technology Act, 2000 and the Copyright Act, 1957.
Any dispute arising out of or connected with these terms shall be subject to the exclusive jurisdiction of the courts of Tamil Nadu, India.
29. General Provisions
Severability. If any provision of these terms is found invalid or unenforceable, it will be limited or removed to the smallest extent necessary, and everything else continues in full force.
No waiver. If we do not enforce a provision on any occasion, that does not mean we give up the right to enforce it later.
Assignment. You may not transfer your rights under these terms to anyone else. We may transfer ours, for example if the website changes ownership.
Entire agreement. These Terms of Service, together with our Privacy Policy and Disclaimer, form the whole agreement between you and TheoryCircuit.com regarding your use of this website.
30. Contact Us
If you have a question about these Terms of Service, or you would like permission to use our content, please get in touch:
Website: https://theorycircuit.com
General enquiries, permissions, copyright and grievances: info@theorycircuit.com
Advertising and sponsorship enquiries: ad@theorycircuit.com
We usually reply within a few working days.
Thank you for reading, and for being part of the TheoryCircuit community. Build carefully, test twice, and always check the datasheet.