EnviroDIY Mayfly Data Logger Arduino Compatible Board and Starter Kit EnviroDIY Mayfly Data Logger Board (v0.5b) plus accessories to get you started Includes waterproof enclosure with clear lid and 0.5watt solar panel Custom microSD connector board plugs into Mayfly for easy access to the memory card 4GB microSD card and adapter included Also includes 1-meter microUSB cable for programming the Mayfly, and 2 Grove cables