WARNING!!! Arduino 3.3 volt (only) SD Card Holder (4K)

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There are a few types of SD card holders, some are specifically made for data logging and have built in real time clocks and SD card holders. Other types have only the SD card holder, but can be used with either 5 volt or 3.3 volt inputs, as they have on-board voltage regulators. Then there is THIS type, which consumes the least amount of power, BUT has no regulation and requires the user to provide the correct, 3.3 volts ONLY.

WARNING: Mis-wiring your Arduino can ruin it and/or any accessories.
Information/drawings offered as is. You are solely responsible for
how it is used. If you don't know, learn first or do not do it.
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