Ice Cream, You Scream

Players are trying to enter the Realm of the Dead (another room) but they are instructed that the portal opens when dying men scream in agony. Players have to scream loudly so they trigger the Noise sensor through the LED Progress sensor extension. When the Noise sensor is triggered, the LED lights chain placed around the portal is being gradually lit, diode by diode. When all the LED lights are lit, the portal opens, with a scary demonic laugh heard from the inside. Electronics needed: 📣 Noise sensor, ⏱ LED Progress sensor extension, 🧩 Universal puzzle controller, 🧲 Electromagnet output set