What is RANDOBLOG?

An open engineering notebook for the smallest hydrogen airship a competent person could build in a shop and then never land. The physics is gated against ships that actually flew: the buoyancy model reproduces the Hindenburg and the Macon to within 2 percent, which is also how it establishes that gas purity is a first-order term rather than a refinement. Energy turns out not to be the binding constraint (the solar loop closes with a 539 percent annual margin, and lift makeup is under 2 percent of demand). Structure is, and phase 3 remains undecided, which the notebook says out loud instead of rendering around.

An open source telemetry payload for model rockets, and the documentation that teaches you to build one. Altitude, acceleration and orientation logged to onboard flash through a flight, optionally downlinked over LoRa with GNSS position for recovery. One rule governs the whole project: never publish a number that has not been measured or sourced. Which is why the bill of materials currently has no prices in it.