The Mayfly Data Logger is a powerful, user-programmable microprocessor board that can be easily programmed with several popular IDE software programs like the Arduino IDE. It features the ATmega1284p processor, which is much more powerful than the 328p chip found on most other boards. It has 4 times more flash memory for sketches, 8 times more RAM, and almost twice as many input pins as standard boards.

https://www.envirodiy.org/mayfly/hardware/details-and-specs/

The Mayfly board can be powered by a 3.7v lithium polymer (lipo) battery (not supplied) or through the USB port. Programming can be done through the USB-C port or via the FTDI header.

You will need a CR1220 button cell lithium battery (not supplied) in order for the RTC to retain the time after the power has been removed. More information and tutorials about the board and kit can be found on the EnviroDIY website.

"EnviroDIY is 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. " excerpt from https://www.envirodiy.org/shop/


************************************  Notes from seller  ********************
This is a single board programmable data logger intended for do-it-yourself water quality monitoring. Similar to a Ardunio or Raspberry Pi, these type of boards can connect to sensor and breakout boards for customized functionality for monitoring and datalogging projects.

This is the board by itself, no additional components are included in the sell price. If a buyer is interested in the components of the full startup kit, please contact me and I can provide some but not all of the startup component, at additional cost, such as the plastic enclosure shown in the photo.

I am reselling this board because I have moved to a new supplier. This product is used, I bought the startup kit about 5 years ago for $250, but it has only been used in a lab/office indoor environment. The board has been tested and is 100% functional. Nonetheless, I am selling as is because it is possible something is not perfect that I wasn't able to find during bench testing. If the buyer has a valid operational issue with the board, I will accept returns up to 30 days. With the microchip shortage, the value of this type of item has increased.

UPS shipping is free. Sales in the Continental USA only. This is a rare item because they typically only sell 5-packs of these boards through the EnviroDIY online store.

Feel free to contact seller with questions. I am honest and fair with my customers and will do everything to make this a pleasant transaction for both sides. Please do the same in return.  Please verify shipping locations and desired shipping methods in the order notes.