Mad scientist makes LEDs in his backyard — semiconductor wizard who made his own RAM turns his attention to using bathroom eBay laser to etch sapphire wafers

Homemade LED.

The Dr. Semiconductor YouTube channel only has a few videos, but the man is quickly making a name for himself. He's built a semiconductor cleanroom in his backyard and made his own RAM cells there. Matthew Hartensveld (his real name) needs to figure out a way to package (cut and write) the RAM cells, so he figure he might as well use the opportunity to make some free-range, homemade LEDs while he was at it. This latest adventure is part of his open-source Semiconductor.DIY project.

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