Jim Moore

Couple of clarifications:

• The discharge is a fixed load of 22Ω so ohm’s law works!
• My question is why is the Mayfly station drawing less and less current as it approaches 3.3 Volts?  Yet the 4G modems continue to work and upload the data.
• I believe that Shannon said that some older sd cards tend to cause current draw during sleep mode.  Ma…

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I am using the same hardware with my Low Cost EC stations   which is set up for UART mode but I have since upgraded to I2C mode when I added the 2G modems.  I am using the sensorex probe for the EZO EC which has an integral RTD which I read thru the analog input.  I think its only about a $30 premium for the the RTD option.  Maybe there are som…[Read more]

Thanks for the info Shannon.  I will check out the GPRSbee and sd card to see if they are the cause of the 2.4 mA draw when in sleep mode.  I’ll try a new Mayfly board next.

@shicks

I checked my GMI_EC5 station that I mentioned above that was not keeping up and I measured about 2.4 mA current draw when the mayfly is in sleep mode.  I thought it should be close to zero when in sleep mode.

Any thoughts Shannon?

@mbarney

I have the same issue.  I have my LEC stations (GMI_ECxx) running with 2G cell service and I did have one station that the solar charge chip failed and caused battery to drop below the 3.55  volt threshold for upload.  However GMI_EC5 seems to be getting a charge during the day but is still not keeping up.  I attached a screen from MMW…[Read more]

@shicks

I checked Amazon and finally discovered that “envirodiy mayfly protoshield” works for a search.  Did not have envirodiy in my search query.

I just bought the last one so guess time to restock

@shicks

I checked Amazon and finally discovered that “envirodiy mayfly protoshield” works for a search.  Did not have envirodiy in my search query.

<h2 class=”user-nicename”>@shicks</h2>
I just checked Amazon and no Protoshields showing.  I guess shipment processing isn’t one day turnaround!

Any updates on the availability of the Protosheilds?

Thanks.  I am using the FTDI port and wiggled some plugs, etc and now is loading ok.  I assume when I was getting that error the mayfly was plugged in and turned on because when I attempt to load with the pwr switch turned off I get the following e…[Read more]

Hi Sara @srgdamiano

I haven’t used PIO for several months but in preparation for the transition from 2G to 4G I launched PIO this week and it apparently did an upgrade and now my code won’t load.

I get the following error:

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00

PIO is currently core 4.3.4 and home 3.2.3

An…[Read more]

@heather

Since it’s not a MMW issue should I move my technical questions back to my original post on “infrastructure and equipment” forum?

Thanks for the update, Shannon.  Are there any plans to buy a quantity of 4G hardware in the expectation of a discount?  I will need at least 8 and would be glad to help out where needed.

I reposted this here from my post this morning on “infrastructure and equipment” forum:

“I noticed that what appears to be a general shutdown of the 2G network in the N. Chester county area which occurred Sunday, 7/12, at 13:45 EDT.  I have 8 stations in the Great Marsh Institutes’s network.  Three of these woke up this morning but the othe…[Read more]

@chuckkir

Thanks Chuck for getting my Sensorex RTD voltage divider output converted to °C.  I plan to leave the EC as the raw value from the AtlasScientific EZO circuit.  Attached is the code addition to DRWI_CitSci.ino to get the Sensorex probe data published to MonMW:

//==================================================
//   Atlas Scientific EZ…

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Sorry forgot to add the links: GMI_test and GMI_EC1.  The other sites GMI_ECx are currently manual upload.