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Blind electronics
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=== Hot components === Electricity creates heat, sometimes at temperatures where touching will cause a risk of burn. I would say there's two categories of heat to deal with: Controlled and uncontrolled. Controlled heat is what you would expect from a functioning design; Heat is an enemy to electronics too as it can damage components or change power consumption. A working design found in a manufactured product control heat using heat dissipation devices such as heat sinks. My recommendation on dealing with these components is to be careful as if you're touching something like a plate or a cup: * Touch it briefly to see how hot it is then decide whether to touch it again * Use the back of your hand to touch if needed * Power off and wait for components to cool if possible Uncontrolled heat happens due to a fault or bad design. The danger from this heat is that it's unexpected and results in a burn or fire. Usually you can detect uncontrolled heat through the following methods: * Touching a component (can result in burns, not recommended) * Smell from melted plastic or melting components I do want to make it clear that heat here comes from passing current through components. If you suspect something is going wrong, remove the current source (usually by just turning the device off) to avoid causing more heat. Batteries can be especially problematic in this case if there's no way to stop the current and thus heat. If you're using batteries make sure there's safety measures in place to stop the current, such as a fuse.
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