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Choosing the Right EnBo PU Battery Pack for Your LEGO Technic Set

Are you trying to upgrade your LEGO Technic set with an EnBo PU Battery Pack, but not sure which version to choose? You’re not alone! With LEGO releasing multiple sets using the Powered Up system—and different types of hubs—it can be a bit confusing to figure out which battery pack fits your model.

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Arduino I2C Joystick shield

I have tried to submit an improved Joystick Shield to Sparkfun to see if this design is worth to work with.
The main concept behind this shield is if a DIY minded developer have left without enough IO connections to finalize its gadget then the I2C protocol can help out using as minimum as two wire to do the job for example to a user input device.

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