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Cal

  • Cal posted a new activity comment 2 weeks, 5 days ago

    OK. If/when I see this happen again, I’ll check the battery with my voltmeter.

  • Cal posted a new activity comment 2 weeks, 6 days ago

    All my Mayflies are v0.5b.

    • I haven’t seen an issue like that. The battery voltage is measured by a simple resistor divider across the battery input, and measured by an analog pin on the micro, so it’s unlikely to randomly drift, unless there is something wrong with the analog reference pin (AREF) or your battery. If it happens again, maybe check the lipo battery voltage…[Read more]

  • Cal posted an update 3 weeks ago

    Has anybody seen a voltage spike recorded by the Mayfly? I have 2 Mayflies measuring water level each powered simply by a 6600mah LIPO battery – no solar panel and no other sources of power. I’m using the sleeping option so that each Mayfly wakes up every half hour and records sensor values plus the battery voltage. The Mayflys have been…[Read more]

    • What version of Mayfly do you have? v0.3, v0.4, v0.5, or v0.5b?

      • All my Mayflies are v0.5b.

        • I haven’t seen an issue like that. The battery voltage is measured by a simple resistor divider across the battery input, and measured by an analog pin on the micro, so it’s unlikely to randomly drift, unless there is something wrong with the analog reference pin (AREF) or your battery. If it happens again, maybe check the lipo battery voltage…[Read more]

  • Cal replied to the topic GPRSBee in the forum Mayfly Data Logger 1 month, 2 weeks ago

    I’ve cut the trace at SJ13 and made the solder bridge to directly connect the LIPO battery to the modem. Now the LTE-M XBee doesn’t reply to anything – I’m sure it’s not powering on. Am I missing some switch or setting? I’m using some version of logging_to_EnviroDIY.ino.

  • Cal replied to the topic GPRSBee in the forum Mayfly Data Logger 1 month, 3 weeks ago

    I ordered some parts and I’m back working on this. I have 4 each of Mayfly’s (v0.5b), Hologram SIMs, and XBee3’s (XB3-C-A2-UT-001). I’ve had a little trouble getting the library straight and I intend to learn and install PlatformIO, but for now I’m working on regular Arduino platform. I’m running Sara’s “logging_to_EnviroDIY” … I don’t know if…[Read more]

  • Cal replied to the topic GPRSBee in the forum Mayfly Data Logger 2 months, 1 week ago

    OK – I’ve cleaned up my library problems as suggested. I’ve paired down the logging_to_EnviroDIY.ino to the bare minimum to check out the modem. I also turned on some debugging and I think I fixed a bug in the code that made it think it was connecting to a WiFi network. I know I got on the cellular network because it showed as active on…[Read more]

  • Cal replied to the topic GPRSBee in the forum Mayfly Data Logger 2 months, 1 week ago

    I just received the Digi Xbee3 that I ordered a week ago. Now I need a little help with a sketch to get me started. I tried using the code that Beth suggested (Logging_to_EnviroDIY.ino) but never got it to compile. Does anyone have a simple bring-up sketch for this module? You can contact me externally at ckillen@charter.net.

  • Cal replied to the topic GPRSBee in the forum Mayfly Data Logger 2 months, 2 weeks ago

    Thanks Beth and Shannon, I’m finally getting a chance to get back to this.

    I’m NOT using any sensor with the ADS115 chip so I’ll go back to my 2G setup and comment out those lines of code. I’ll get back to you on my success/failure eventually.

    The Digi XBee3™ Cellular Smart Modem, LTE-M seems to be what I want in the long run. I just ordered…[Read more]

  • Cal replied to the topic GPRSBee in the forum Mayfly Data Logger 2 months, 2 weeks ago

    Does anyone know when 3G will be available on the Mayfly?

  • Cal replied to the topic GPRSBee in the forum Mayfly Data Logger 2 months, 3 weeks ago

    Thanks for your posts Beth and Sara. The more I look into this, the more I believe that Sara is right; I just don’t have 2G service where I live. I found an old Raven 2G modem, plugged it in and it couldn’t connect either. Even knowing that, I tried to run the script that Beth suggested but couldn’t get it to compile:
    error: ‘class…[Read more]

  • Cal started the topic GPRSBee in the forum Mayfly Data Logger 2 months, 3 weeks ago

    I have very recently purchased a Mayfly, GPRSBee (with SIM800H) and a Hologram sim card. Finding information on how to get the cellular communication working has been a nightmare. I’m sure there is some documentation out there somewhere but I haven’t found what I need: a step-by-step guide for loading/personalizing/testing the configuration. I…[Read more]

  • Cal became a registered member 3 months ago