About this competition
BottleSumo is a two-round autonomous challenge on an open rectangular table (~75 × 150–180 cm). Teams first push five sand-filled bottles off the table in a timed trial that seeds the bracket, then compete head-to-head (best of 3) with no bottles. Explorer and Innovator divisions set different size, weight, and motor limits.
Beginner To Intermediate
Time Trial + Single Elimination
What to expect
Robots must wait 3 seconds after start before moving—same program and start method every game.
Every robot needs at least one edge/line sensor and one object-detection sensor.
Explorer (≤2.5 kg, 20 cm box, 2 motors) and Innovator (≤3.0 kg, 30 cm box, 4 motors) categories.
Time-trial seeding, then single-elimination matches decided by pushing the opponent off and surviving 3 seconds.
Who should join
Student teams who design, build, and program their own autonomous robot—especially those ready to iterate between time trials and bracket matches.
11 September (CTG)
18 September (DHK)
Chittagong - Chittagong Grammar School
Dhaka - Manarat Dhaka International School & College
Official rules
Time trial seeding with bottles, then single-elimination head-to-head on an open rectangular table.
On-page highlights only—open the PDF for complete details.
Register for BottleSumo
- Registration fee: BDT 300 per member (e.g. 3 members = BDT 900). Pay via bKash to confirm. After payment, do not close or leave the page until you see the registration successful message.
- After you complete registration and payment, you will receive a confirmation email with your registration PDF.
- Bring this PDF for entry at the event.
- If you registered and paid but did not receive the email or PDF, check your junk/spam folder. If it is still missing, contact us at events@robonautsltd.com or +880 1954-954047 (Registrations Related).
Registration closes · Dhaka Division
Sep 15, 2026 · 11:59 PM BST
Registration closes · Chittagong Division
Sep 9, 2026 · 11:59 PM BST