CNN)Robert Downey Jr. may be Iron Man in the popular Marvel superhero films, but he recently dealt in some advanced bionic technology himself.
Downey recently presented a robotic arm to young Alex Pring, a Central Florida boy who is missing his right arm from just above his elbow. The arm was made by Limbitless Solutions, a volunteer group started by Albert Manero, a University of Central Florida engineering PhD student, to make free bionic arms for kids.
Albert Manero and a team of engineering students at University of Central Florida designed a prototype for an electronic arm. Six-year-old Alex Pring was the first recipient. Rather than profiting from the designs, the students uploaded them to the Internet for anyone to use.
Through 3-D printing technology, Alex and others have had the chance to get a robotic arm so they can use their limbs again. Alex received his robotic arm in the summer, then later had it upgraded to resemble a "Transformers" arm.
