Sensors & Controllers for Robots
What each part means, what it tells the brain (a number or on/off), how to spot it and where its pins go. Try each one live.
⚠️ 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.
⚠️ No short circuits. Never connect + straight to − : wires and batteries get hot fast. Switch off before you change wires.
⚠️ 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. The brain board here is a generic one: use the pin names printed on your own board.