HelixHack 2026 — Event Handbook
Silicon Circle's First Teen Innovation Hackathon • Chennai, India • October 2026
1. What Is HelixHack?
HelixHack is Silicon Circle's inaugural teen innovation hackathon, held in Chennai in October 2026. It is a city-wide, team-based event that challenges students from Grade 9 to Grade 12 to design and build solutions to real-world problems across four themes, using science, technology, engineering, and mathematics (STEM) as their foundation.
Teams participate in one of two categories: Pitch-Only (ideation and research-based) or Prototype (working model, app, hardware, or software). The event spans online qualifying rounds followed by an offline finale demo day held during the Navratri school holidays on Saturday, October 18, 2026.
Why Silicon Circle Is Organising This
Most hackathons available to teens in Chennai are too senior in scope, too niche, or not locally accessible. HelixHack fills that gap by creating a structured, mentored, and genuinely rigorous competition designed specifically for school-age innovators. Silicon Circle is a community. We believe students do not need to wait until they graduate before making meaningful contributions to real problems.
Event Format at a Glance
| Item | Details |
|---|---|
| Event Name | HelixHack 2026 |
| Organiser | Silicon Circle |
| Location | Chennai, Tamil Nadu, India |
| Participation Region | Chennai city — open to all Chennai-based teens |
| Grade Range | Grade 9 to Grade 12 |
| Team Size | 2 to 5 members per team; members may be from different schools |
| Format | Online qualifying rounds + Offline finale demo day |
| Categories | Pitch-Only (ideation) | Prototype (working implementation) |
| Registration Opens | Tuesday, September 15, 2026 |
| Registration Closes | Thursday, September 25, 2026 |
| Finale Date | Saturday, October 18, 2026 (Navratri school holiday window) |
| Starting Budget | Domain and server hosting only; all other costs funded via fees and collaborator |
2. Themes
All teams must build their project within one of the four themes below. Themes are intentionally broad to allow creative interpretation, while focused enough to give teams a clear problem space to work within.
Theme 1: AI & Emerging Technology
Projects that use, explore, or critically examine artificial intelligence, machine learning, automation, computer vision, robotics, or other cutting-edge technologies to solve a real-world problem.
Theme 2: Sustainability & Climate
Projects focused on environmental preservation, renewable energy, climate resilience, food security, water conservation, or building a more sustainable future for urban communities.
Theme 3: Mental Health, Student Wellbeing & EdTech
Projects that address mental health challenges faced by students, or that use technology to improve how young people learn, study, and grow. This theme bridges emotional wellbeing with educational innovation.
Theme 4: Accessibility & Inclusion
Projects that remove barriers for people with disabilities, language differences, economic disadvantages, or other challenges that limit their full participation in society, education, or technology.
3. Participation & Categories
Who Can Participate
- Students currently enrolled in Grade 9 through Grade 12 at any Chennai school.
- Independent teens not affiliated with a school are also eligible to apply.
- Teams may include members from different schools.
- All participants must be in Chennai for the offline finale round.
Team Structure Rules
| Parameter | Rule |
|---|---|
| Minimum Team Size | 2 members |
| Maximum Team Size | 5 members |
| Cross-school Teams | Allowed and encouraged |
| Independent Participants | Allowed; must form or join a team to compete |
| Registration | One submission per team; one Team ID issued per team |
Category Breakdown
Teams develop a well-researched, evidence-backed idea for solving a real problem. No working prototype is required. The emphasis is on depth of thinking, scientific rationale, feasibility, and presentation skills.
- Finale Format: Live stage presentation in fixed scheduled slots.
- Time per team: 5-minute pitch + 3-minute Q&A from judging panel.
- What to bring: Slide deck (main screen), printed references/materials.
- Judged on: Problem framing, depth of research, STEM basis, feasibility, clarity.
Teams build a working implementation (software, hardware device, physical model, web or mobile app). Must demonstrate the solution in action live at the stall.
- Finale Format: Stall-based expo hall with rotating judge visits.
- Time per team: 8–10 min per judge visit (5-min demo + 3-5 min Q&A).
- What to bring: Live prototype, project poster, data visualizations, stall decorations.
- Judged on: All Pitch-Only criteria + technical implementation quality and sophistication.
4. Vibe Coding and AI Tool Policy
The use of AI-assisted coding and development tools is permitted in HelixHack. This includes tools such as GitHub Copilot, Cursor, ChatGPT, Claude, v0, Replit AI, and any similar AI pair-programming or code-generation assistant.
✅ Permitted Use
- Using AI tools to generate, assist, debug, or refactor code; scaffold boilerplate; generate design assets; or summarise background research.
- Using AI-generated code or components, provided the team fully understands what the code does and why.
❌ Not Permitted Use
- Using AI to generate the core problem identification or innovation idea. The insight, framing, and direction must originate from the team.
- Submitting AI-generated work that team members cannot explain. This is treated as academic dishonesty and results in disqualification.
💡 Judge Expectation: At the finale, judges will ask teams to walk through sections of their code or hardware logic directly. Inability to answer clearly will result in score deductions under the STEM Integration and Presentation criteria.
5. School Ambassador Programme
Apply as AmbassadorSchool Ambassadors are student representatives from Chennai schools who drive registrations and awareness within their institutions. Each ambassador is the official Silicon Circle point of contact at their school.
Ambassador Responsibilities
- Distribute registration information and links within their school.
- Organise a short intro session or announcement using Silicon Circle materials.
- Act as first point of contact for queries from students at their school.
- Encourage their school's teams to stay active throughout all rounds.
What Ambassadors Receive
- Title: "Silicon Circle Ambassador" — an officially recognized & credited role.
- Certificate: Official Ambassador certificate for college applications.
- Priority Registration: Ambassador's own team receives priority status.
- Innov8 Access: Exclusive access to monthly STEM Innov8 challenges.
- School Cup Credit: Earn points toward your school's School Cup trophy.
6. Registration & Key Dates
| Date | Milestone |
|---|---|
| Mon, Sep 15 | REGISTRATIONS OPEN. Ambassador activation. Marketing blast. |
| Fri, Sep 26 (Evening) | Mandatory GMeet Info Session for all registered participants. |
| Wed-Thu, Sep 24-25 | Final registration push. Ambassador follow-ups at schools. |
| Thu, Sep 25 (EOD) | REGISTRATIONS CLOSE. Team count confirmed. Path A or Path B activated. |
| Fri, Sep 26 (morning) | Post-registration agenda, Team ID, and Round 1 schedule sent to all teams. |
GMeet Info Session — September 26, 2026
A compulsory GMeet session held the day after registrations close. At least one team member per team must attend. Agenda:
- Event overview and full rules walkthrough.
- Theme and category explanation with example projects.
- Discord server onboarding and daily log requirement explanation.
- Round 1 format and what judges expect.
- Live Q&A with organizers Arnav and Maanas.
7. Round Structure
The round structure depends on total registered teams. Silicon Circle will assess the count immediately after registrations close on September 25 and announce the activated path (Path A: under 1,000 teams; Path B: 1,000+ teams) that same evening.
Round 1: Online GMeet Pitch (Sep 26-28)
Format: Live GMeet presentation to judges in scheduled slots.
Duration: 5-minute pitch + 3-minute Q&A per team.
Content: Problem statement, proposed solution, chosen theme/category, STEM basis.
Judged by: Industry & collaborator judges using official scoring rubric.
Results: Announced September 29 with specific written feedback sent within 48 hours.
Build Period & Finale (Sep 29 - Oct 18)
Build Period: Finalists have ~18 days (Path A: Sep 29–Oct 17) or 14 days (Path B: Oct 3–Oct 17) to develop, refine, and build their solutions.
Daily Logs: Daily Discord progress uploads are mandatory.
Finale Demo Day: Saturday, October 18, 2026 in Chennai.
8. Evaluation Criteria & Scoring Rubric (100 Points)
All rounds use the same core rubric. At the finale, Pitch-Only (stage panel) and Prototype (stall panel) are judged independently with separate placements.
| Criterion | Pts | Pitch-Only — What Judges Look For | Prototype — What Judges Look For |
|---|---|---|---|
| Innovation & Originality | 25 | Is the idea novel? Does it address a real problem in a creative or non-obvious way? | Same. Does the chosen implementation approach reflect creative problem-solving? |
| STEM Integration | 20 | Clear scientific, engineering, or mathematical basis? Are data/calculations used? | Is implementation grounded in sound engineering/CS? Can team explain the science? |
| Feasibility & Practicality | 25 pts | Can this realistically be built? Are real-world constraints and resource availability acknowledged? | Equal across all rounds |
| Impact & Theme Relevance | 15 | How significant is the problem? Does solution align meaningfully with theme? | Same. Does working prototype address a meaningful problem within theme? |
| Execution & Quality | 10 | Depth and clarity of the idea. Research quality. Strength of slide deck. | Quality of working prototype. Reliability of demo. (Weighted heavily for Prototype). |
| Presentation & Communication | 10 | Stage presence, clarity of delivery, ability to handle Q&A confidently. | Ability to walk judges through prototype fluently and answer technical questions. |
| Daily Discord Consistency | +5 | Consistency and quality of daily progress logs during Build Period (bonus points). | |
Feedback Policy
Silicon Circle is committed to giving every team — including eliminated teams — specific, written, individual feedback after every round within 48 hours. Feedback is delivered via email and student dashboards.
9. Finale — Demo Day
Date: Saturday, October 18, 2026 (Navratri school holiday window: October 11–19, 2026 — no school conflict).
Location: Exhibition hall with stage, Chennai.
Format: Dual-format — Pitch-Only teams present on stage; Prototype teams present at stalls simultaneously.
Full Finale Schedule — Saturday, October 18, 2026
| Time | Activity |
|---|---|
| 9:00 AM | Venue opens. Volunteers at entry: pass & ID distribution. Prototype teams proceed to stalls. |
| 9:00 - 9:30 AM | Prototype teams set up stalls (posters, prototypes). Pitch-Only final slide check on stage AV. |
| 9:30 - 10:00 AM | Icebreaker Bingo session. All teams mingle — Pitch-Only and Prototype together. |
| 10:00 AM | JUDGING BEGINS. Stage judging (Pitch-Only) & Stall judging (Prototype) run simultaneously. |
| 10:00 AM - 12:30 PM | Judging window. Pitch-Only stage slots back-to-back. Prototype stall judges rotate floor. |
| 12:30 PM | Judging concludes. Lunch break. People's Choice Vote closes on social media. |
| 1:30 PM | Speaker session on stage: representative from collaborator addresses all participants. |
| 2:00 PM | Judge score consolidation & deliberation off-stage by Silicon Circle panels. |
| 3:00 PM | Results announced on stage. Special awards first, then category placements (3rd, 2nd, 1st). |
| 3:30 PM | Prize and certificate distribution on stage. Collaborator presents to category winners. |
| 4:00 PM | Group photos, open networking, and informal venue time. |
| 4:30 PM | Venue closes. Event ends. |
10. Prizes & Award Categories
| Award | Prize & Recognition |
|---|---|
| PITCH-ONLY CATEGORY | |
| Pitch-Only — 1st Place | Cash prize (TBD) + Trophy + Certificate + Incubation access + Joint recognition letter |
| Pitch-Only — 2nd Place | Cash prize (TBD) + Trophy + Certificate + Joint recognition letter |
| Pitch-Only — 3rd Place | Cash prize (TBD) + Trophy + Certificate |
| PROTOTYPE CATEGORY | |
| Prototype — 1st Place | Cash prize (TBD) + Trophy + Certificate + Incubation access + Joint recognition letter |
| Prototype — 2nd Place | Cash prize (TBD) + Trophy + Certificate + Joint recognition letter |
| Prototype — 3rd Place | Cash prize (TBD) + Trophy + Certificate |
| SPECIAL AWARDS | |
| People's Choice Award | Certificate + Spot prize (TBD) — open to both categories |
| Best STEM Implementation | Certificate + Spot prize (TBD) — open to both categories |
| Best Stall Award | Certificate — Prototype category only |
| Silicon Circle Fellows | Recognition certificate + Official Silicon Circle community membership |
| Daily Discord Star | Certificate — open to both categories |
| All Participants | Certificate of Participation — every registered team member receives one |
11. Discord Daily Progress Protocol
During the Build Period, all finalist teams are required to post daily progress updates in the Silicon Circle Discord server's dedicated finalist channel. This requirement exists for three reasons: accountability, community energy, and fuelling the People's Choice vote.
What Each Update Must Include
- One or more photos showing physical or digital progress made that day.
- A written typeout of at least 3-5 sentences covering: what was done today, what worked, what didn't work, and what is next.
Rules & Integration
- Frequency: One update per day. Missed days reduce bonus score (up to +5 pts).
- Authenticity: Must reflect genuine progress. Copying previous posts is penalized.
- People's Choice: Silicon Circle reshares build highlights on Instagram & LinkedIn.
12. STEM Integration Framework
HelixHack is not just a technology competition. It is a STEM event. Every project, regardless of theme or category, must demonstrate grounding in science, technology, engineering, or mathematics.
Encouraged Approaches
- Using real-world data or publicly available datasets to validate a problem.
- Building hardware prototypes using Arduino, Raspberry Pi, or sensors.
- Applying mathematical modelling, simulation, or statistical analysis.
- Conducting a structured mini-experiment to test feasibility.
STEM Award
The Best STEM Implementation award is given specifically to the team whose project most rigorously and creatively applies STEM principles, whether through mathematics, physical engineering, scientific experimentation, or code.
13. What Makes HelixHack Different
14. Full Weekly Timeline
| Phase & Dates | Goals and Key Activities |
|---|---|
| Phase 1: Foundation (Jul 1 - Jul 28) | Finalise event name, themes, rubric. Begin subdomain & site dev. Task board setup. Draft pitch deck & ambassador perks. |
| Phase 2: Pre-Launch (Jul 29 - Aug 25) | Finalise collaborator agreement. Website soft launch. Ambassador orientation. Marketing blast across IG & LinkedIn. |
| Phase 3: Pre-Registration (Aug 26 - Sep 20) | Full marketing push & ambassador spotlights. Build waitlists. Exam period low-frequency posts. Venue booking & fee setup. |
| Phase 4: Registration (Sep 22 - Sep 25) | REGISTRATIONS OPEN. Ambassador school activations. GMeet info session deck prep. Registration closes Sep 25 EOD. |
| Phase 5: Qualifiers & Finale (Sep 26 - Oct 18) | Round 1 GMeet pitches. Results Sep 29. Build Period active with daily Discord logs. People's Choice vote. FINALE DEMO DAY OCT 18. |