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Re:STM32 Open Source Multimeter by TeMPOraL on Friday June 21, 2019 @07:49AM (#20241620)
This is literally what currently prevents me from doing DIY IoT projects at home. I'm not proficient enough in hardware to build battery-powered items, and I'm scared of leaving unattended anything I built that's powered off a wall wart.
Re:STM32 Open Source Multimeter by elvecinodeabajo on Friday June 21, 2019 @08:04AM (#20241701)
To loss the fear just experiment with some safety and take measurments. You can let plugged a new project during some hours to look if it makes nasty things or not.

Anyway, I really encourage you to doing DIY projects at home. Most of them work in low voltages between 5 and 3.3V, risks are close to nothing.