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It would be nice if the SDIO pins were defined for this variant like other variants. A pinout diagram is here. I think this is the correct definition. // SDIO #define PIN_SD_CLK (18u) #define ...

The switches were demonstrated with flat metal membrane (top electrode), precisely controlled gap between the membrane and bottom electrode, low insertion loss (/spl les/ 0.15 dB at 20 GHz), and high ...

This Arduino project is a simple security alarm system that allows users to activate/deactivate it using a 6-digit PIN code entered through a 4x4 matrix keypad. ...