I Built My Own Hair Electrolysis Machine
SMRTR summary
A DIY engineer built a custom galvanic hair electrolysis machine from scratch to permanently remove body hair at home, potentially saving thousands of dollars in professional treatments. Starting with a crude car battery prototype, they progressed to a custom PCB featuring an RP2040 microcontroller, automated lye dosing, and foot-pedal control — all in a 53mm square device.
SMRTR provides this summary for quick context. The original article belongs to Hacker News.
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