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Do it yourself (DIY)

I2C module LCD to Arduino

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The most annoying of the projects with Arduino and LCD is the number of threads, because they are needed 4 for the data, two for control, two for power and two more for a pot. This I2C module with display ...

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USB current and voltage meter

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Your tablet or mobile phone is really loading as it should? The source, the cable or even the device may be the problem. You can discover the defect using a USB current and voltage meter like this one below, that's pretty cheap ...

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