Timed online quiz testing understanding of electronics, embedded systems, sensors, actuators, and control logic before the practical rounds. 30 questions, run on an open-source timed quiz platform (e.g., Kahoot). Top-scoring teams qualify for Round 2.

• All teams participate in the timed technical quiz.
• Covers: basic electronics, Arduino/embedded systems, Ultrasonic sensors, servo motors, transistors, sensors & actuators, control logic and state machines.
• Conducted via an open-source timed quiz website.
• Each team answers using one designated device.
• Question timer must be followed strictly.
• No external assistance, internet search, AI tools, or communication with other teams permitted.
• Ranking is based on the platform's own accuracy + speed scoring.
• Top scoring teams qualify for Round 2.
• Quiz scores do not normally carry forward to later rounds.

The quiz platform's built-in speed + accuracy score usually separates ties automatically (faster correct answer wins).

Target placed 20 - 30 cm from the turret at a random pan angle within a 150° arc, set immediately before the round. Target center height is only given as a range in advance; exact value revealed on the day, right before calibration. Target is a printed concentric-ring pattern (10 = center down to 1 = outer ring), scored visually by a stationed judge in real time, backed by camera recording for disputed calls. Match window: 90 seconds.

• Target set at a random pan angle within a 150° arc, 20 - 30 cm distance.
• Exact target height revealed only on the day, before calibration.
• Ring value judged visually in real time by a stationed judge.
• Match window is 90 seconds.
• A judge may issue a live on-the-spot modification request before/after the run (e.g., double sweep speed, recalibrate for a shifted height).
• Organizers may swap in a spare Ultrasonic sensor or servo (same model, different unit) shortly before the round.
• No live code edits once the match timer has started (edits during the calibration window are allowed).

Four static targets are placed at distinct bearings (minimum ~30–40° apart) and varying distances (25-50 cm) from the turret, at the same fixed height as Round 2. The turret must perform a full sweep using its own ultrasonic sensor, detect all four targets, determine each one's distance, and engage them in order of increasing distance from the turret (nearest first). No target-position or ranking data is given to teams both detection and ranking must be computed entirely on the team's own hardware/firmware. Match window: 2 - 5 mins (increased from 90s to allow a full scan plus four sequential engagements).

• Four target placed at fixed positions, minimum of 30 - 40° apart, distance 25-50 cm from the turret, same height as round 2
• Turret must complete a full sweep before engaging any targe, firing during the initial scan is not allowed
• Ranking must be by actual measured distance (nearest to farthest); team must compute and store all four pairs before sequencing shots
• Match window is 2 – 5 mins for the full sequence (scan + 4 engagements).
• Scoring is flat hit/no-hit, and rank based hitting
• Same on-site calibration window, live-modification viva, and component-swap rules from Round 2 apply
• No live code edits once the match timer has started