Lego Mindstorms Ev3 Sumo Bot Building Instructions Pdf Apr 2026

Leo grinned, and Little Samson’s single red EV3 eye blinked once—like it had been waiting for that answer all along.

Instead, Leo had spent two sleepless nights in his basement, surrounded by bins of Technic beams, friction pins, and three mismatched EV3 large motors. He’d built something weird. Little Samson had no bulldozer blade. No active arm. Just a low, wide stance, a single infrared sensor pointing down , and a secret: a passive scoop made from a single, curved 3x13 beam, hinged loosely at the front.

Then Samson did the strangest thing. It reversed. Its loose front scoop dipped under Crusher’s lifted front end—just three millimeters of clearance, but enough. Leo’s bot didn’t push Crusher forward. It lifted. Just a tiny tilt.

So he’d closed them all.

Leo didn’t answer. Because he had downloaded them. Three weeks ago, he’d opened a dozen tabs searching for . He’d found the classic designs: the bulldozer blade, the vertical arm, the gyro-assisted drivetrain.

Across from him, Mia adjusted her glasses. Her EV3 sumo bot, Crusher , was a brutalist masterpiece of angled beams and massive, spiked wheels. Leo’s bot, Little Samson , looked like a shoebox with treads.

Mia stared. Leo exhaled, his hands trembling. lego mindstorms ev3 sumo bot building instructions pdf

Crusher slammed into Samson —but didn’t push it. Instead, Crusher’s front blade slid right over Samson’s low slope. Then Samson moved. A single motor pulse turned it 20 degrees. Crusher , overcommitted, slid past, its wheels brushing the edge of the ring.

“Next time,” she said, “I’m not using the PDF either.”

“No way,” Mia whispered.

The Last Push

“You didn’t use the PDF,” she said.

~600 The fluorescent lights of the community center hummed a low, nervous tune. Leo tapped his foot under the table, his eyes locked on the small, makeshift dohyo —a circular ring of black poster board taped to the floor. Leo grinned, and Little Samson’s single red EV3

“Sumo-bots, ready?” the announcer called. “Three… two… one… Hajime! ”