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  Stephen H started the topic Yosemitech 511-a no readings? in the forum Environmental Sensors 3 months ago

  Hey,

  Using the Yosemitech 511-a, with the regular code[snippet below], on a ver 1.1 mayfly, using the older modbus wing.

  I get

  YosemitechY511 at modbus_0x02 reports temperature is -9999.0 degreeCelsius
  YosemitechY511 at modbus_0x02 reports turbidity is -9999.00 nephelometricTurbidityUnit

  The sensor turns on, wipes back and forth 3 times, I…[Read more]
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  Braedon replied to the topic Controlling 12-volt heaters with a power relay in the forum Infrastructure and Equipment 3 months, 1 weeks ago

  @shicks I wanted to run by what my thought process is with these relays and some of the questions I have now that I have purchased a few. I think my questions are general enough that you should be able to help me with them. I am looking to connect the Seeed relay to the D10-D11 grove terminal on the Mayfly. This would connect the relay’s SIG pin…[Read more]
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  Cal started the topic System Hangs with Hologram Outage in the forum Mayfly Data Logger 3 months, 1 weeks ago

  During the Hologram outage last week, 12 of my old stations in the field (all Mayfly 0.5 and Digi modems) stopped reporting measurements over the Internet.  Then when Hologram fixed the problem, 10 of these stations (which have been running since 2020), came back online and reported all their measurements including the time Hologram was down.…[Read more]
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  kwolfe replied to the topic Hydros21 sensors not returning data in the forum Mayfly Data Logger 3 months, 1 weeks ago

  Setting the channel twice did the trick.

  Thanks!
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  D_Manning started the topic Sketch for rain gauges (SDI 12 interface) in the forum Environmental Sensors 3 months, 1 weeks ago

  Would anyone have a Mayfly sketch for rain gauges such as METER’s ECRN-50 or -100 or Campbell’s Rainvue 10 (i.e., SDI 12 interface)? If it incorporates an Adafruit Trinket, all the better, but if it doesn’t, no problem.
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  Shannon Hicks replied to the topic Hydros21 sensors not returning data in the forum Mayfly Data Logger 3 months, 1 weeks ago

  When you did the address changing sketch, did you get a positive result using the serial monitor that showed the channel was changed to something other than 1?  Sometimes there’s a glitch where you have to set the channel twice before the change actually happens and it stays on the new channel.

  What sketch are you using for the logging sketch…[Read more]
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  kwolfe replied to the topic Hydros21 sensors not returning data in the forum Mayfly Data Logger 3 months, 1 weeks ago

  We tried that but are still getting -9999 values.
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  Shannon Hicks replied to the topic Hydros21 sensors not returning data in the forum Mayfly Data Logger 3 months, 2 weeks ago

  Did you do the example “b_address_change” sketch first, to change the sensor’s default channel from 0 to 1?
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  kwolfe started the topic Hydros21 sensors not returning data in the forum Mayfly Data Logger 3 months, 2 weeks ago

  We are unable to get our Hydros 21 CTD sensor to return data. We are getting -9999 values on both the SD card and the website. All the connections are secure. The SDI-12 address is set as follows:
  <div>
  <div>     const char*   hydrosSDI12address = “1”;  // The SDI-12 Address of the Hydros 21</div>
  <div>     const uint8_t hydrosN…[Read more]
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  marbles replied to the topic Free alarm system for monitormywatershed *updated* in the forum Miscellaneous 3 months, 3 weeks ago

  Hey Brian,

  Yay! Glad to hear! I can email you the website link and login credentials.
  andrew3000@berkeley.edu

  What’s the name of your site? Right now it’s only set up to run on meter hydros 21 sensors but i should be able to add some new ones pretty quick. Also what is the location of the site/name of the town you plan on using for incorporating…[Read more]
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