Welcome to EnviroDIY, a community for do-it-yourself environmental science and monitoring. EnviroDIY is part of WikiWatershed, an initiative of Stroud Water Research Center designed to help people advance knowledge and stewardship of fresh water.
New to EnviroDIY? Start here


  • Rob replied to the topic Powering an Adafruit FONA in the forum Mayfly Data Logger 7 years ago

    That’s very helpful, thanks. In the past I had good results with custom shields that connected the FONA’s Batt pin to the Stalker’s VCC pin, but the new design uses a diode that cannot handle the current necessary.

  • Greetings,

    I recently received two Mayfly v0.5 units which I am evaluating. I used to use the Seeeduino Stalker v3.0 for projects, but I find the v3.1 they have replaced it with, among other problems, will not put out enough power to run an Adafruit FONA 808. Fixing this requires desoldering a surface-mount diode and shorting the pads, which is a…[Read more]

  • Rob became a registered member 7 years ago