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DFRduino Mega2560 (Arduino Mega 2560 R3 Compatible)IntroductionThe new version of DFRduino Mega2560 has improved the VIN power supply circuit by changing the easily overheat LDO to DC-DC circuit for ensuring safety and reliability in long-term use. In addition to optimizing the overheating issue, it offers a wider input voltage range. What’s more, ..