Comments on: Light up your XMAS from your Smartphone https://www.open-electronics.org/light-up-your-xmas-from-your-smarthone/ Open source electronic projects Tue, 07 Nov 2017 11:13:37 +0000 hourly 1 https://wordpress.org/?v=6.6.1 By: An I²C Bus powered Arduino IO Expander Board controlled via Bluetooth and Android | Open Electronics https://www.open-electronics.org/light-up-your-xmas-from-your-smarthone/#comment-10546 Fri, 23 May 2014 10:12:16 +0000 http://www.open-electronics.org/?p=6778#comment-10546 […] The circuit diagram of a single expansion shield has been developed around the U1 component, namely Microchip’s MCP23017. Find more info in the previous post. […]

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