Raka smiled. “Exactly! The ‘Bokeb’ can capture moments not just as 2‑D video, but as 3‑D data. Imagine replaying the entire fair in virtual reality—walk around the booths, see the models from any angle. That’s the future.”

“Good afternoon,” he said. “My name is Raka, and I’m an 8th‑grader (kelas 8). I’d like to introduce you to the Bokeb, a low‑cost 3‑D scanner that any middle‑school student can build.”

When he turned the device on, the Pi booted up with a cheerful green LED, and the camera started streaming to his laptop. He pointed the laser at a small wooden block and watched the software try to reconstruct a point cloud. The result? A noisy, jittery mess of dots that resembled a scribble more than a shape.

He recorded a for the fair, titled “Bokeb – From Idea to Reality (Full Journey).” The video began with a short animation of the typo “Bokeb” turning into a glowing 3‑D shape, then cut to Raka’s introduction, followed by clips of the first test, the problems, the fixes, and finally the polished prototype in action. He added subtitles in Bahasa Indonesia and English, making the video accessible to the judges and his peers. Chapter 6 – The Presentation On the day of the fair, the school’s gym was transformed into a bustling exhibition hall. Booths lined the aisles, each showcasing a different project: solar‑powered water pumps, biodegradable plastic experiments, and a robotic arm that could write poetry.

Later, in the school’s hallway, a crowd of curious students gathered around Raka’s booth. A sophomore named asked, “Can we use the Bokeb to record a school event? Like a video of the whole assembly line for the science fair?”

He pressed play on his video. The judges watched the entire narrative: the initial concept, the chaotic first test, the systematic fixes, and the final working prototype. When the video ended, the monitors displayed a short clip of the dinosaur model rotating inside the VR goggles, its colors vivid, its form perfectly rendered.