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Just saw a guy at the hangar using a regular multimeter on a 28V DC bus. That's a fast way to fry a board.
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eva_adams686mo ago
Honestly used to think a multimeter was just a multimeter, like they all did the same thing lol. Watched a buddy at the hobby shop let the magic smoke out of a flight controller doing that exact thing. Now I check the rating on the dang thing every single time before I poke at anything over 12 volts. That lesson got learned the expensive way for sure.
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mark_hayes6mo ago
Yeah, @eva_adams68, that's a solid point. It's not just about the voltage rating either, it's about the category rating for safety. A cheap meter might say it can handle 600 volts, but if you poke it into a live household outlet and something arcs, it could explode. You need a meter rated for the energy level of the circuit you're testing. I learned that the hard way after a scary pop on an appliance repair. Now that CAT rating on the front is the first thing I look at.
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jesse_williams626mo ago
Let the magic smoke out" is my usual first step in any project.
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