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Tag: samd21

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Seeed XIAO SAMD21 Plus and RP2040 Plus Double the GPIO Count
microcontrollers

Seeed XIAO SAMD21 Plus and RP2040 Plus Double the GPIO Count

Seeed kept the postage-stamp footprint but pushed the XIAO SAMD21 to 30 GPIO and the RP2040 to 29, with onboard battery charging from $4.90.

Ann Arandia Sep 7, 2026

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