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IO pin expander - extension cap for Raspberry Pi 3 / 4 / 400
An expansionoverlay for the Raspberry Pi in the form of an IO pin expander. It is compatible with Raspberry Pi version 3 / 4 and 400. On the board all the leads are described, which greatly facilitates prototyping and creating projects using it. In addition, the manufacturer has also included information about the BCM code and WPIcode on it.
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