Raspberry Pi Foundation launches $4 microcontroller with custom chip

Meet the Raspberry Pi Pico, a tiny little microcontroller that lets you build hardware projects with some code running on the microcontroller. Even more interesting, the Raspberry Pi Foundation is using its own RP2040 chip, which means that the foundation is now making its own silicon. If you’re not familiar with microcontrollers, those devices let you control other parts or…
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