Ohmbo is an AI-assisted workspace for taking a hardware idea from requirements to a measured prototype. Start with a plain-language description of what you want to make, and the workspace covers circuits, firmware, simulation, and enclosures in one project record, so a circuit decision stays connected to its firmware and enclosure consequences instead of drifting across files. You can explore a schematic and PCB, preview a 3D enclosure, iterate on firmware, and validate the next change with supported simulation tools, with revision history and engineering evidence kept in the same place. An AI draft is treated as a starting point: an engineer reviews the design before fabrication, and measured test results are written back into the project. A compatible MCP client can also connect to the workspace from code. Starting is free, while prototyping and physical testing are quoted separately as manufacturing services. It is built for hardware founders, makers, engineers, and students who want a first custom board without staffing a full hardware team.