CrankGPT Hand-Cranked AI Machine Runs Voice Chat on Muscle Power
CrankGPT inverts the usual AI power narrative by making the user supply the energy physically, turning inference into a tangible, muscle-powered act.
Reporting from 1 sources: GIGAZINE.
A new device called CrankGPT runs a local voice conversation AI entirely on electricity generated by a hand crank. The system uses a Raspberry Pi 5 with custom power and audio boards, and the crank's resistance increases during high-load AI processing, giving the user physical feedback.
The hardware consists of a hand-crank generator connected to a Raspberry Pi 5 with 8GB of RAM, a cooling fan, and an audio output expansion board. The Pi runs DietPi Linux and a custom voice agent that combines speech recognition, a large language model, and speech synthesis. A custom power supply board handles instantaneous current spikes.
The crank's resistance changes with power demand, so the user physically feels when the system is doing heavy work such as running LLM inference and speech synthesis at the same time. Startup takes about 25 to 35 seconds total. Voice latency ranges from roughly 2.9 seconds with Gemma 3 1B to about 0.8 seconds with LF2.5-350M.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.