A few weeks ago we found that some of the version 0.3 Mayfly boards were assembled by the manufacturer with an incorrect voltage regulator on the section of the board that generates the switched 5-volt boosted supply. This error does not affect any other functionality or features on the Mayfly. The only issue is that you will see 3.3 volts on the “Sw_5v” pin instead of 5 volts. We hav...Read More
We are excited to announce that our Mayfly Data Logger boards are now available for purchase on Amazon!
It has a combination of features and capabilities that make it one of the most powerful and flexible logger platforms available.
A few months ago I was asked by a researcher here at the Stroud Water Research Center to come up with an automated way to measure the voltage of 8 fuel cells. The cells need to be electrically isolated from each other, so that requires differential measurements instead of the more common method of using a common ground for everything and then just doing single-ended measurements. I looked into c...Read More
Real Time Clock (RTC) modules like the DS3231 chip (found on the ChronoDot and Seeeduino Stalker v2.3) keep track of the date and time for a datalogger circuit. The module can output the number of seconds since January 1, 2000 as an integer, which can be very handy for recording a time stamp with your sensor data. However, 1/1/2000 is not a common starting point for most epoch calculations. The...Read More
Our Arduino datalogger designs have gone through a few improvements since our original models four years ago. This past year we refined the design even more and have come up with our most rugged and reliable system yet. The datalogger is still based on the Seeeduino Stalker board, which has solar battery charging circuitry, memory card slot, real time clock, and a socket for an XBee radio or ce...Read More