OK, everyone relax. You know this chip-making malarkey that's pushing the stock prices of companies like Nvidia, ASML and TSMC into orbit, in part thanks to the AI boom and resulting chip crisis? It isn't so complex after all. Someone's built a semiconductor-class cleanroom in a wooden shed in their backyard. DIY chip building, here we come, people.Well, kinda. There might be a few more hurdles to vault once the cleanroom itself is sorted, but hold that thought. As spotted by Hackaday, the aptly monikered YouTube channel Dr.Semiconductor takes us through a backyard cleanroom build, and it turns out not to be nearly as difficult as you might think.Cleanrooms, in a modern chip-manufacturing context, are typically located inside huge factories comparable in size to a sports stadium. They're essentially large spaces within the factory walls containing manufacturing tools and very clean air where chips are actually produced. A single tiny spec of dust can ruin a whole chip, so scrubbing the air in these facilities is absolutely critical. Not to overemphasise the point, but the air needs to be incredibly clean.You might, therefore, think that a plain wood shed in someone's garden is an inauspicious start. Surprisingly, it seems you'd be wrong. Dr.Semiconductor used mainstream and widely available materials for the build.We're talking insulation, framing to support HEPA filters, heating and cooling kit, and so on. Inside the wood shed, some dry wall (known as plasterboard in the UK) makes up the cleanroom structure, coated in epoxy for a smooth, particle-free surface. Two zones are required: a "gowning" area and the cleanroom itself. You can't just walk straight into a clean room, you "transition" into it.
