Welcome to EnviroDIY, a community for do-it-yourself environmental science and monitoring. EnviroDIY is part of WikiWatershed, a web toolkit designed to help citizens, conservation practitioners, municipal decision-makers, researchers, educators, and students advance knowledge and stewardship of fresh water. New to EnviroDIY? Start here

Mayfly Starter Kit


The Mayfly Starter Kit contains the following items:

  • EnviroDIY Mayfly Data Logger Board
  • Waterproof enclosure with clear lid
  • microUSB programming cable (1-meter long)
  • 2 Grove cables (20cm long)
  • 4GB microSD memory card with SDcard-size adapter
  • 0.5 watt solar panel with JST connector
  • Mayfly microSD vertical adapter board
  • 6-pin header adapter for FTDI devices

Note: there are no batteries included with the Mayfly Starter Kit.  You will need to purchase a 3.7v LiPo battery (with JST connector) if you wish to operate the board on battery power.  And if you plan to use the DS3231 Real Time Clock chip for timekeeping, you’ll want to buy a CR1220 coin cell lithium battery.    

The Mayfly board was specifically designed to fit inside this enclosure (Model RP1095C).  It’s waterproof and comes with a gasket for the lid and stainless steel screws.  The solar panel fits neatly inside the clear lid, so you can build a self-contained solar-powered logging station.  Add a cable gland to the end of the enclosure to get any sensor cables into the the box (tutorial coming soon).