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Arduino RGB LED driver board design

I’ve designed this dimmable Arduino RGB led driver board to be cheap and easy to build. This board has 3 separate driver channels for R, G and B leds with up to 1A each. The final user can regulate the output current by setting reference voltage resistors.

If you are looking for a led driver that is simple and cheap to build here you can find instructions on how to build your own.

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Arduino MKR1000 contest

For those interested, Arduino MKR1000 is a new board that Arduino is launching the next February 2016. It’s focus it in the IoT realm.  Arduino and Microsoft have joined forces and initiate a contest which the 1000 first pre-selected candidates will win a brand new Arduino MKR1000 board before they are even released to the public. Continue Reading →


A nice energy monitor using arduino

Usually I do constant research on projects to automatize things at home, like energy monitor. Long time ago I came across this little nice post, explaining in a very simple way how to monitor your home energy consumption. On top of that he is using an ethernet shield that outputs the information through a MQTT feed to where it is processed and transformed in a nice bar graph.

UPDATE: Xively is not free anymore so this example will not work. Soon I will post an alternative using other types of logging.

UPDATE2: Here you can check another project using sparkfun server and thingspeak server

Energy monitor3
Energy graph

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