For this year’s Hackaday Prize, [will.stevens] is growing his own produce and now looks for a way to shield his endeavors from the perils of the British winter. To achieve this, he decided to grow vegetables in sealed containers. Inspired by prior art and backed up by research, his approach is a wild mix of applied laziness on one hand and reckless over-engineering on the other. The sealed containers in this project are PET bottles, chosen for their availability and the produce are carrots, mainly because they can be harvested through the bottle’s mouth. Carrots also feature a high energy density and can provide fibers for plant-based construction materials so [will] deems them ideal space colonist food.
The project is currently in its fourth attempt and somewhere along the road from carrot seeds, dirt and some water in a soda bottle to the current state, the setup sprouted artificial lighting and a CO2 sensor. Fully aware that sealed greenhouses are a proven concept, [will.stevens] provides links to literature one should read before attempting something like this, alongside regular updates on his progress.