See How a Robot Works
For total beginners: no robot and no experience needed. Meet every part, watch the signal travel, then build one on the screen.
⚠️ Safety first
⚠️ Battery power only. Use only batteries (AA or AAA packs, a 9 V battery) or USB 5 V. Never a wall outlet (120 V AC): wall power can kill. Never open chargers, power adapters, microwaves or other appliances: some parts inside stay charged even when unplugged.
⚠️ Moving parts pinch. Spinning fans, wheels and gears can pinch fingers and catch hair, strings and sleeves. Tie back long hair. Switch off before you touch. Keep fingers out of the blade path; use a guard or soft foam blades.
⚠️ Coin and button batteries: adults only. If swallowed, a button or coin battery can burn through a child's throat in as little as two hours (U.S. CPSC). Keep them, and anything that holds them without a screw-closed door, away from children. Never put a battery in your mouth. If you think anyone swallowed one: go to the emergency room right away. Call the National Battery Ingestion Hotline 1-800-498-8666 or Poison Help 1-800-222-1222. Don't wait for symptoms and don't make the person throw up.
Privacy: no accounts. Your progress stays on this device. Nothing is sent anywhere. Listen uses your device's own voice.