Funduino IO Shield for Arduino Nano
$2.99
(Arduino Nano not included). Plug an Arduino Nano into this IO shield and you get convenient power distribution and plugs for all analog and digital ports. Also has a standard 5.5mmx2.1mm DC power input barrel jack. You can plug in 6 to 20 volts (7 to 12 recommended) to power the Nano and sensors or other peripherals.
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