We’ve had a strong past year of ALog development, with Chad Sandell now based at the University of Minnesota and able to devote his full attention to instrumentation. These developments have not been matched with a frequency of posting here – there’s been too much rapid development with our small staff to push forward on all fronts – but the short story is that we’ve:

  1. Improved the performance, reliability, power consumption, and versatility of the ALog BottleLogger (See our GitHub hardware and software). Notably, Chad implemented the watchdog timer alongside the Arduino bootloader – formerly a difficult proposition (link tells you why; it’s about Arduino bootloaders) – to ensure that the logger will reboot in the field if anything causes it to hang.
  2. Created an automatically-installable custom board definition for the ALog BottleLogger that uses OptiBoot, allowing programs to be larger, EEPROM (permanent memory) to be saved even with full bootloader-level reprogramming, and complementing the watchdog timer use.
  3. Performed deployments in Minnesota, Argentina, and Ecuador
  4. Added support a number of new sensors to our portfolio, including pressure transducers and temperature profilers for groundwater studies, and a full suite of weather station instruments
  5. Developed more standard methods for building a range of field instrumentation hardware, currently being tested in Ecuador
  6. Presented the alpha version of the ALog BottleLogger 2.0 (now in beta stage) at the 2016 American Geophysical Union (AGU) Fall Meeting (follow link for poster)
  7. Updated our purchasing information and price list

This list of improvements will guide our future productions, sales, and (time willing) posts here illustrating a some pieces of progress as well as some tips on how we’ve built some nice-looking Arduino code and made some hardware-related improvements that might be all-around useful.