For my project, I wanted to recreate something I saw in a movie several years ago: Tony Stark’s Hand-Mounted Repulsor from Iron Man 3. Using the Adafruit Circuit Playground Express, I was able to make a prop replica prototype of this weapon using the Circuit Playground’s built-in light sensor and LED bulbs, and the whole circuit’s power is controlled using a two-position analog switch by connecting three wires to the voltage out, A1, and ground pins respectively; the circuit itself is powered by a 3.7V 1200mAh battery. When enabled, the LEDs glow in the color of a bright sky blue hue, to replicate the color of the repulsor light from Tony Stark’s numerous Iron Man suits and weapons.
Here’s how the project works: it is an LED circuit that can be switched on and off, but also changes the brightness of the bulbs via the light sensor. When the light sensor picks up light, the LEDs will gradually, but very quickly, become very bright, almost as if you’re about to fire a blast. When you close your hand, preferably while wearing a black glove that’s included with the project, the light sensor picks up that there’s no light, so the LEDs gradually turn off as if they’re powering down. The whole circuit is mounted onto an arm brace so it can be worn by people and it can be worn on either arm. This could hold the key to making a simple circuit for a replica Iron Man gauntlet, and with more time put in, could have other features.
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