What would be a good base tool for a sonic screwdriver or tricorder, as a literal high-tech computer-based multi-tool, built around an arduino or RPi?
I mean the way a knife is the base for a Swiss Army knife or pliers for a leatherman?
Actual screwdriver? Thermometer? Tweeter?
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That’s more the processing base not tool. Tool would be a sensor and/or actuator.
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In that case a digital multimeter because a multimeter can become the most sensors by far
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