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Shannon Hicks replied to the topic MayFly Kit/Bee Adapter availability in the forum Mayfly Data Logger 4 years, 3 months ago
We received a shipment of new boards from the manufacturer last week, and I’m working right now on testing and packaging everything, so we’ll be sending them to Amazon next week and they should be available on there shortly after that.
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Shannon Hicks replied to the topic Mayfly Data Logger Board and Starter Kit in the forum Mayfly Data Logger 4 years, 4 months ago
We currently only have the option of selling via Amazon and shipping to US customers only, as it is limited by our Amazon seller account. We hope to one day have other options for all the international requests we’ve gotten, but don’t have any other official options right now. Our current Amazon inventory is also dwindling due to all the shi…[Read more]
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Shannon Hicks replied to the topic Bringing in serial data through UART on 20-Pin connector in the forum Mayfly Data Logger 4 years, 5 months ago
Are you sure you need to use UART 0 for your incoming data from your deice? The RX0/TX0 pins on the 20-pin header are directly wired to the main UART 0 of the Mayfly, which are the same pins that are used when programming the Mayfly board via your computer (using either the USB port of the FTDI header). So if you have a device connected to R…[Read more]
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Shannon Hicks replied to the topic Mayfly 16 bit ADC errors in the forum Mayfly Data Logger 4 years, 5 months ago
I usually leave the ADS1115 in its default gain setting (which is 0.1875 mv per bit), which is more than sufficient for most measurements. If you do that, you can easily calculate voltage by using these two lines:
adc0 = ads.readADC_SingleEnded(0); voltage = (adc0 * 3.3)/17585.0;
If you’re using a voltage divider, you’ll need to add an…[Read more]
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Shannon Hicks replied to the topic bulk purchase lead time in the forum Mayfly Data Logger 4 years, 5 months ago
Amazon isn’t replenishing our inventory as fast as usual, and we definitely prefer people contact us directly for orders over 10 boards or kits so that we can leave the Amazon inventory for people who only need to buy a few at a time. Email us at mayfly@envirodiy.org and we’ll see what we can do for you.
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Shannon Hicks replied to the topic Mayfly Power Switch Issue in the forum Mayfly Data Logger 4 years, 6 months ago
Sorry to hear you’re having trouble with your Mayfly logger power switch. That’s one of the parts I thoroughly test on each board before we ship them out, to make sure there are no problems with the switch. Occasionally we’ve seen them get flaky like that if the board has been in a moist environment (i.e. the inside of the enclosure was damp o…[Read more]
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Shannon Hicks replied to the topic Trouble initializing XBee3 LTE-M in the forum Mayfly Data Logger 4 years, 7 months ago
Cal, that’s an interesting find, thanks for sharing. I have a couple test boards that I’ve always kept in mode 2 (AT&T) and they’ve never had a problem connecting consistently and instantly. But we started changing the CP mode on most of our other stations last fall to allow them to connect to Verizon towers as well, and it seems like those a…[Read more]
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Shannon Hicks replied to the topic SDI-12 Library in the forum Other Data Loggers 4 years, 7 months ago
That demo sketch is just a sample of how to talk to your sensors, there’s lots of stuff in there that you could trim out if you’re actually trying to collect data at a certain rate. What type of board are you using? Are you planning to store the data on a memory card or just print to the computer’s serial monitor? There’s a 10-second delay on…[Read more]
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Shannon Hicks replied to the topic SDI-12 Library in the forum Other Data Loggers 4 years, 7 months ago
That example goes through the list of available address to see if a sensor is attached that has a corresponding address, so it definitely takes awhile to go through the whole list. You could rewrite it to only go through the addresses of your sensors and not the entire list. But your sensors have a 600ms sample time (as stated in the d…[Read more]
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Shannon Hicks replied to the topic Stronger cell antenna? in the forum Mayfly Data Logger 4 years, 7 months ago
A few years ago, we used to put SMA jacks with bulkhead fittings through the Pelican case and use an external weatherproof antenna outside the case. But the signal loss caused by the extra coax and the bulkhead fitting caused more to lower the overall signal than just using a small antenna inside the Pelican case. So unless we’re connecting a…[Read more]
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Shannon Hicks replied to the topic Arduino datalogger in the forum Other Data Loggers 4 years, 7 months ago
The code and wiring depends on what kind of sensors you’re talking about connecting to the same pin. Are you using sensors with SDI-12 or modbus communication? Are these sensors already included in the many supported sensors in the EnviroDIY ModularSensors library, or are they unique sensors we haven’t used before?
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Shannon Hicks replied to the topic Logging to ThingSpeak in the forum Mayfly Data Logger 4 years, 7 months ago
Jim, the 2G modules in your stations is the GPRSbee, made by SODAQ. You can order it directly from them on their webshop (https://shop.sodaq.com/gprsbee-rev7.html), and they ship quickly from the Netherlands. They used to be available through other vendors, but not anymore, so we buy them directly from SODAQ. It come with the antenna and po…[Read more]
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Shannon Hicks replied to the topic Cannot connect to internet for clock sync with NIST in the forum Mayfly Data Logger 4 years, 7 months ago
What kind of carrier board or adapter board are you using between your PC and the Xbee LTE module?
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Shannon Hicks replied to the topic Cannot connect to internet for clock sync with NIST in the forum Mayfly Data Logger 4 years, 7 months ago
Did you activate the SIM card with Hologram? If the orange RSSI LED light isn’t coming on, then you aren’t getting any cell reception. Once you do get cell reception, the orange LED will come on (and it’s brightness is indicative of the strength of the signal). And a few seconds after the orange light comes on, the blue light will start bl…[Read more]
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Shannon Hicks replied to the topic Logging to ThingSpeak in the forum Mayfly Data Logger 4 years, 7 months ago
There are lots of different places you can send your data. ThingsSpeak is just one of several sites available that offer different levels of hosting, depending on how many stations you have, how long they’ll retain the data, and how the data is displayed. You can even create your own mySQL database and free graphing site like I did back at the b…[Read more]
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Shannon Hicks replied to the topic Alternative to Campbell Scientific OBS-3? in the forum Environmental Sensors 4 years, 8 months ago
We’re eagerly awaiting the new Campbell turbidity sensors which should be available in late spring or early summer. In the meantime, there aren’t any other low cost, high quality turbidity sensors that easily interface with the Mayfly except for the Yosemitech ones, which we’re still evaluating for long term performance reliability and…[Read more]
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Shannon Hicks replied to the topic Debug flags for modem comms in the forum Mayfly Data Logger 4 years, 8 months ago
What is the battery voltage that your Mayfly is recording in your data file? We’ve had a few random failures of a mosfet on the board that will cause the Mayfly to read the incoming Lipo or USB voltage as being much lower than it really is (see this post: https://www.envirodiy.org/topic/innacurate-lipo-battery-voltage-data/). Your logger co…[Read more]
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Shannon Hicks replied to the topic Debug flags for modem comms in the forum Mayfly Data Logger 4 years, 8 months ago
You might try using a new SIM card or a new LTEBee module. We’ve had several of them stop working recently for no reason at all. Sometimes using a brand new SIM card will fix the problem, but other times it requires using a new LTEbee module. We haven’t determined the cause of the failure yet, nor a solution to get them working again.
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Shannon Hicks replied to the topic Mayfly clock and battery in the forum Mayfly Data Logger 4 years, 8 months ago
There’s no reason to remove the CR1220 coin cell battery before shipping the board. You’re not able to ship loose batteries, or larger multi-cell batteries, but it’s okay to ship one watch battery if it’s installed in equipment, such as being inserted into the Mayfly’s battery holder. Don’t ship more than one at a time, and protect the Ma…[Read more]
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Shannon Hicks replied to the topic MayFly Kit/Bee Adapter availability in the forum Mayfly Data Logger 4 years, 8 months ago
We finally received the Mayfly boards and other accessories, so we’re working to get everything tested, packaged, and shipped to Amazon as quickly as possible. Everything will hopefully be available online again by this weekend or early next week.
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