SparkFun's ATmega2560-equipped board. This is a compatible board for the Arduino Mega 2560, with a 3.3V power supply and an 8MHz operating frequency. It features an STK500V2 bootloader. Since the pin sockets are not attached, you can wire directly to it, allowing for a compact height. Also, it can be connected to 3.3V devices without level conversion. ● Features ・Equipped with ATmega2560, operates at 8MHz with an external resonator ・Can be connected to 3.3V operating devices without additional circuitry ・3.3V regulator on board, 500mA max ・DC input 3.3V～12V ・Resettable fuse installed ・Power selection switch installed For more details ↓ https://www.switch-science.com/products/947?srsltid=AfmBOortjjmT0SItscL_9j1ZNjb4Wf0JyGlr9WyXDDuBrUO4dkvpaGjO Please consider this as junk due to long-term storage. Electronic components Electronic work arduino mega Compatible machine