AI chatbots are a dime a dozen, sometimes cheaper. Chatbots in custom hardware are less numerous, but still pop up steadily. So if you want a conversational robot to stand out, it helps to go the extra mile. Something like a realistic layer of personality, a shiny gold coat, and six-million forms of communication would help a lot. Sam Potozkin’s Threepio project pulls it off. Inspired (of course) by the original 1977 film, Potozkin, a student at Chapman University, has tried to replicate the experience of interacting with the iconic protocol droid as faithfully as possible. He put in the work to give the 3D-printed case a smooth finish, and added little greeblies to the display stand to sell it. But the work didn’t stop there. His C-3PO runs the AI chat stack locally on a Raspberry Pi 5. Instead of a typical speaker, he uses an exciter to make the voice sound like it’s coming from the whole head, and put time into refining effects until the sound came out just right.…