Researchers Jéssica Cristina Tironi, Anita Fernandes, Renata Coelho Borges, Luis Augusto Silva & Wemerson Delcio Parreira developed a Teensy-powered self-stabilizing pen that counters hand tremors in Parkinson’s patients
https://www.pjrc.com/self-stabilizing-pen/
Image is an illustration from academic paper, not actual photo of the prototype







