Interactive Iron Man repulsor by Advancer Technologies on Instructables. More than just wearable…it’s triggered by the electrical activity of your forearm muscles! How cool is that? The Adafruit Wave Shield for Arduino also features prominently.
Simply flex your forearm muscle and hear the repulsor charge up, then relax your forearm to fire (lighting up the LEDs on your palm and playing explosion sound effects). As an added flair for realism, when you turn on the system, J.A.R.V.I.S.’s voice takes you through the boot up and calibration sequence.