[Making Handmade Ccomputa] is a workshop making a computer that would fit the palm of a hand. Participants make their own unique circuit board they can hold by hand, and they take it with them. To be able to operate the [ Making Handmade Ccomputa] they use Arduino that is a small and cheap microcontroller in the center of open source hardware culture that can control physical input and output easily. When the general Arduino workshops are done around the software related to utilization of ready-made goods, they approach the physical computing in broader spectrum by making a small computer that uses ATmega chip from beginning to the end in the [ Making Handmade Ccomputa].