Raspberry Pi HATs offer small, stackable data acquisition with features like analog and digital I/O.

This one differs from those in that most use a brushed DC motor as a cheap generator, while here that function comes from a stepper motor feeding a rectifier pack and thence a DC-to-DC converter.

Instead, he embarked on a brave journey to breathe new life into the machine by swapping its dying brushed motor for a sleek brushless upgrade. Things got real as [Chaz] dismantled the drill ...

It features a brushless motor and weighs less than 3-1/2-lbs ... I’ve worked and written about all aspects of building and DIY. Since I’ve used many tools in my own work and conducted hours ...