EnviroDIY | Site-Wide Activity https://www.envirodiy.org/activity/ Activity feed for the entire site. Sat, 29 Aug 2026 14:53:10 -0400 https://buddypress.org/?v= en-US 30 hourly 2 88dd4ec21b3bbf728946113e239e334f marbles replied to the topic LoRa on Mayflys in the forum Mayfly Data Logger https://www.envirodiy.org/topic/lora-on-mayflys/#post-19887 Thu, 27 Aug 2026 02:47:49 -0400 Awesome! I will work on a set post.

]]> 10f188bb8aaf900c319c6df61a1689a8 Shannon Hicks replied to the topic LoRa on Mayflys in the forum Mayfly Data Logger https://www.envirodiy.org/topic/lora-on-mayflys/#post-19886 Wed, 26 Aug 2026 18:03:50 -0400 <p class=”isSelectedEnd”>Yes, absolutely—we’d love for you to share it! One of the best things about the EnviroDIY community is seeing the creative ways people adapt the Mayfly and develop new hardware and software solutions for their monitoring needs.</p>
<p class=”isSelectedEnd”>A post describing your LoRa implementation would be very hel…[Read more]

]]> 70dd0905a2f4854f20277acfd436910f marbles started the topic LoRa on Mayflys in the forum Mayfly Data Logger https://www.envirodiy.org/topic/lora-on-mayflys/ Wed, 26 Aug 2026 16:36:59 -0400 A few months ago I successfully attached a LoRa antenna to a Mayfly and send data over the decentralized Helium network. This results in lower upfront hardware costs compared to cellular modems, lower battery draws and transmission fees at around $0.00001 per message.

Would anyone be interested in learning how to set this up?

]]> 52ae87a603380a37abe998890e1fb457 Sara Damiano replied to the topic Mayfly unit stop sending data to the online site in the forum Monitor My Watershed https://www.envirodiy.org/topic/mayfly-unit-stop-sending-data-to-the-online-site/#post-19884 Tue, 25 Aug 2026 21:06:07 -0400 For data you have on the SD card, you can upload it so that it appears online following these instructions: https://wikiwatershed.org/wp-content/uploads/monitor-my-watershed-quick-guide-uploading-data.pdf.  NOTE: The instructions mention that there’s a file size limitation.  That limitation no longer exists.

Sadly, though, if your data isn’t on t…[Read more]

]]> bff717d4f1147e83843ecacd7e06e704 TUBearRiver started the topic Mayfly unit stop sending data to the online site in the forum Monitor My Watershed https://www.envirodiy.org/topic/mayfly-unit-stop-sending-data-to-the-online-site/ Mon, 24 Aug 2026 17:23:14 -0400 My Mayfly unit stop sending data to the online site on Sept 17, 2025. I just pulled the unit and brought it home and was able to pull data from the memory card for 8/12/2022 to 1/3/23 and 5/12/2023 to 1-21-26.

Nothing after 1-21-26 shows up and it is important to have this data due to it being the worst drought year on record. I have the mayfly…[Read more]

]]> a69f03d81fad969b2fbdc5fb6aa0b815 Shannon Hicks replied to the topic Negative turbidity readings in the forum Mayfly Data Logger https://www.envirodiy.org/topic/negative-turbidity-readings/#post-19784 Mon, 17 Aug 2026 17:16:17 -0400 The shield wire of the OBS3 sensor cable doesn’t actually connect to anything on the sensor, so it’s okay to leave that floating, especially if you’re just testing the sensor.  The green and black wires both definitely need to be connected to GND or the sensor won’t work properly.  Both the high range and low range should read around 0 NTU when t…[Read more]

]]> 917049938090dc785c287c6bbf093c29 nick replied to the topic Negative turbidity readings in the forum Mayfly Data Logger https://www.envirodiy.org/topic/negative-turbidity-readings/#post-19783 Fri, 14 Aug 2026 21:48:16 -0400 Thank you for the information. I will try the voltmeter for confirmation.

Can a 7-year-old OBS3+ turb sensor go bad if it has been sitting in a climate-controlled room? It was probably used only a couple of times for testing indoors but has been powered off for at least 6 years. I get a positive reading when exposed in the open air, but when I…[Read more]

]]> 7c4569ced014b82b3797cdcc380be104 Shannon Hicks replied to the topic battery size options in the forum Mayfly Data Logger https://www.envirodiy.org/topic/battery-size-options-2/#post-19780 Tue, 11 Aug 2026 16:00:34 -0400 It’s possible to use a battery that big, as long as the polarization of the JST connector is the same.  However, we rarely have the need for a large battery with our standard stations with sensors like CTD, turbidity, or oxygen, even with cellular telemetry ever 5 minutes.  If you use a really large battery, you have to make sure your solar p…[Read more]

]]> 5d5582374a30ebfafd51392d17db188e Shannon Hicks replied to the topic Negative turbidity readings in the forum Mayfly Data Logger https://www.envirodiy.org/topic/negative-turbidity-readings/#post-19779 Tue, 11 Aug 2026 15:40:43 -0400 Those old Campbell OBS3+ turbidity sensors will either flatline or go negative when they fail.  We started deploying dozens of that sensor model about 8 or 9 years ago and almost all of them have been removed from the field in the past few years due to failure.  It looks like your station is 8 years old so you got more life out of it than m…[Read more]

]]> 44f7ecc0048d26db0582461169d9fa1e nick started the topic Negative turbidity readings in the forum Mayfly Data Logger https://www.envirodiy.org/topic/negative-turbidity-readings/ Mon, 10 Aug 2026 22:11:09 -0400 I am noticing negative turbidity readings (https://monitormywatershed.org/sites/NJJC1S/). The turbidity sensor is clean and is situated freely in the water column. I unplugged and replugged the turbidity’s grove cable. Everything in the logger box looks dry and fine. Is my sensor dead or are there other troubleshooting steps I should do? thank you.

 

]]> ec193a29562911672bc177cf8a6b5549 nick started the topic battery size options in the forum Mayfly Data Logger https://www.envirodiy.org/topic/battery-size-options-2/ Mon, 10 Aug 2026 22:01:03 -0400 Are there any negatives in choosing the 10050 mAh battery https://www.adafruit.com/product/5035? Size wise it is the same as the 6600mAh that you have listed on your site https://www.envirodiy.org/battery-options-mayfly/. I’m thinking the higher mAh would maintain the voltage better. Or does the long recharge time put a hinderance on things. I’m…[Read more]

]]> 4e3237b49bbef720d5c975fba0d70c45 nick started the topic battery size options in the forum Monitor My Watershed https://www.envirodiy.org/topic/battery-size-options/ Sat, 08 Aug 2026 15:55:45 -0400 <div data-olk-copy-source=”MessageBody”>Are there any negatives in choosing the 10050 mAh battery https://www.adafruit.com/product/5035? Size wise it is the same as the 6600mAh that you have listed on your site https://www.envirodiy.org/battery-options-mayfly/. I’m thinking the higher mAh would maintain the voltage better. Or does the long…[Read more]

]]> 2d68448f2f6aadf9d36687b63d404526 Sabin replied to the topic EspressifESP32 in the forum Mayfly Data Logger https://www.envirodiy.org/topic/espressifesp32/#post-19771 Tue, 04 Aug 2026 22:46:41 -0400 Thank you so much.

I am not using the AWS stuff for now but I will be deploying mosquitto on cloud at some time.
if this old firmware create problem at that point, I will update the firmware.
Thank you again.

]]> 66073cbaaea5d139e3b4e24bf32fbe70 Sara Damiano replied to the topic EspressifESP32 in the forum Mayfly Data Logger https://www.envirodiy.org/topic/espressifesp32/#post-19770 Tue, 04 Aug 2026 22:43:45 -0400 Yes, those are because of the old firmware. If you’ve got it working, it may not be worth updating, but it should eliminate those work-around.

If you want to use custom SSL certificates, upgrade. The only way to push custom certificates with the old firmware (or with an ESP8266) is to use a python script to write the memory blocks with the new…[Read more]

]]> 72ee32eb88336653cd13b9d00f344a15 Sabin replied to the topic EspressifESP32 in the forum Mayfly Data Logger https://www.envirodiy.org/topic/espressifesp32/#post-19769 Tue, 04 Aug 2026 22:31:21 -0400 I am using EnviroDIY fork. Until now everything is working. I am able to make both http post, and mqtt connection.
I checked and mine esp32 firmware version is 2.4.0. So,Is it because of this lower version, I had to do some hack around for ssl connection?
Below is the part of workaround I coded to make it work with hydroserver.

void…

[Read more]

]]> e5f1c0118f5c5b93710ac78e505c1f01 Sara Damiano replied to the topic EspressifESP32 in the forum Mayfly Data Logger https://www.envirodiy.org/topic/espressifesp32/#post-19768 Tue, 04 Aug 2026 21:51:47 -0400 Are you using the original TinyGSM or the EnviroDIY fork? The EnviroDIY fork is far ahead of the original right now.  (It’s on my to-do list to have a proper PR.)

I’d (strongly) recommend updating your AT firmware.  The current version of TinyGSM on the EnivroDIY fork expects firmware >= 3.2.0.0.  Because of changes in the memory mapping for SS…[Read more]

]]> 8d0928d4d4beb6412d60cd6d08e7c7d2 Sabin replied to the topic EspressifESP32 in the forum Mayfly Data Logger https://www.envirodiy.org/topic/espressifesp32/#post-19767 Tue, 04 Aug 2026 21:36:23 -0400 I have.
Before opening a tcp connection, the Socket Receiving Mode should be made to 1 (passive mode). I have no idea why it works only while doing this. But it works.

void ExpressifESP32::extraSetupForMQTT(){
  // See…

[Read more]

]]> 4e5e11225606bda4f136dbf24871a773 Sara Damiano replied to the topic EspressifESP32 in the forum Mayfly Data Logger https://www.envirodiy.org/topic/espressifesp32/#post-19766 Tue, 04 Aug 2026 21:29:37 -0400 Were you able to connect to your MQTT broker?

It looks like you’re working from the modem component within Modular Sensors.  That component wraps TinyGSM and adds physical pin support for power management.  But the wrapping makes it a bit confusing because you have to access objects with pointers and creator functions.  And if you’re trying to us…[Read more]

]]> 6419cd9b019ba254e5d7057c3864cd57 Sara Damiano replied to the topic Library issues in the forum Mayfly Data Logger https://www.envirodiy.org/topic/library-issues/#post-19765 Tue, 04 Aug 2026 21:23:03 -0400 Ah. That example is written for the current “master” branch of the library, not the latest polished release.  I’m way overdue for a new release, but there are some bugs I still need to fix.

Try starting from this example instead, which is matched to library release 0.37.0:  h…[Read more]

]]> 72987cf3044f7e96e59deda0b1b4e4ea sjsteiner21 became a registered member https://www.envirodiy.org/activity/p/10897/ Fri, 31 Jul 2026 21:45:05 -0400 0 c2314434a06821dddb02968f90a5244c Shannon Hicks replied to the topic Parts list, European vendors - Water level and ph in the forum Mayfly Data Logger https://www.envirodiy.org/topic/parts-list-european-vendors-water-level-and-ph/#post-19759 Thu, 30 Jul 2026 21:41:41 -0400 We’re really excited to partner with Labcrafter so they can be a source of our products to people in Europe.  As for sensors, the Maxbotix MB7389 you mentioned is probably your best bet for low cost ultrasonic rangefinding.  Just be sure to order the TTL version so it’ll work straight into the Mayfly board (the RS232 sensor would require an i…[Read more]

]]> 249b8cb8c2359a90e6cd09339b75849b jsterling replied to the topic Library issues in the forum Mayfly Data Logger https://www.envirodiy.org/topic/library-issues/#post-19758 Thu, 30 Jul 2026 18:12:23 -0400 /** ========================================================================= * @example{lineno} EnviroDIY_Monitoring_Kit.ino * @copyright Stroud Water Research Center * @license This example is published under the BSD-3 license. * @author Sara Geleskie Damiano <sdamiano@stroudcenter.org> * * @brief Example for DRWI CitSci LTE sites. * *…

[Read more]

]]> 1cf18f1517fd947346179219b557f642 jsterling started the topic Library issues in the forum Mayfly Data Logger https://www.envirodiy.org/topic/library-issues/ Thu, 30 Jul 2026 17:31:26 -0400 I’m working on building a sensor station using a Mayfly Data Logger v. 1.1, EnviroDIY cellular bee, a Hydros 21 CTD sensor. I am using the sketch EnviroDIY_Monitoring_Kit.ino and the Modular Sensor Libraries v0.37.0. I am having a difficult time getting my sketch to compile.  I am receiving the following error that it cant find…[Read more]

]]> 2c40e793258f25a975cfed537a7945b7 Jasper started the topic Parts list, European vendors - Water level and ph in the forum Mayfly Data Logger https://www.envirodiy.org/topic/parts-list-european-vendors-water-level-and-ph/ Sun, 26 Jul 2026 16:01:26 -0400 <span style=”font-weight: 400;”>Hi EnviroDIY community. We’re looking to set up 1-2 EnviroDIY stations in Ireland.</span>

<span style=”font-weight: 400;”>We’re currently looking at multiple potential use cases. Water level monitoring for a kayak club and water level + ph monitoring for two environmental groups.
</span>

<span sty…[Read more]

]]> 48175a7638a9d517d5e83ed5ef7d38e5 Jasper became a registered member https://www.envirodiy.org/activity/p/10891/ Sun, 26 Jul 2026 15:18:44 -0400 0 a919cd061fd5f26c4511e3e49843f324 Al DeLuca became a registered member https://www.envirodiy.org/activity/p/10889/ Sat, 25 Jul 2026 10:52:01 -0400 0 51701c08585be94d6874470ddc277444 Omid became a registered member https://www.envirodiy.org/activity/p/10887/ Wed, 22 Jul 2026 19:04:10 -0400 0 e088025b85c7452fc00b8e8c3e148c7a Sabin replied to the topic EspressifESP32 in the forum Mayfly Data Logger https://www.envirodiy.org/topic/espressifesp32/#post-19739 Wed, 22 Jul 2026 12:35:30 -0400 Never mind. The wifi worked. I used AT+CWMODE? and change it from SoftAP to Station mode.
But I am struggling to use this to connect to mqtt broker.

]]> cb13381672a7738899bba97c7f1e77ce Sabin started the topic EspressifESP32 in the forum Mayfly Data Logger https://www.envirodiy.org/topic/espressifesp32/ Wed, 22 Jul 2026 02:11:59 -0400 How to connect to Wifi while using this in Mayfly data logger?
I have been trying this codebase or even the one with tinygsm library but nothing works. Is there any pre-configuration that is needed to be done?

#include <ModularSensors.h>
#include <modems/EspressifESP32.h>
#include <Arduino.h>
#include "arduino_secrets.h"


#define XbeeSerial…

[Read more]

]]> 2262ca50451b45196aee33fb5e47a5db caroline@wachusett started the topic Mayfly MicroSD card not recording properly in the forum Mayfly Data Logger https://www.envirodiy.org/topic/mayfly-microsd-card-not-recording-properly/ Tue, 14 Jul 2026 19:40:27 -0400 Hello,

We’ve had a Mayfly station that had the Mayfly board (version 1.1a) replaced in April of 2025. We download the data monthly and the board has been working well up until this spring. When I checked the data for April, the microSD card (8 GB SanDisk Edge) had multiple file extensions I have never seen (see photo from May 6th). The microSD…[Read more]

]]> 1b4a76595c409b9708e965e51ae79c2f Sara Damiano replied to the topic Secure Client for DigiXbee in the forum Mayfly Data Logger https://www.envirodiy.org/topic/secure-client-for-digixbee/#post-19726 Fri, 03 Jul 2026 00:52:17 -0400 The ESP32 does.  It’s also a currently supported product and very widely available.  You can get very cheap ESP32 breakout boards in a variety of shapes and sizes.  There are several flavors depending on how much power you need, but they can all do a basic secure post request.  You could even use the older, even cheaper ESP8266.

If you’re usi…[Read more]

]]> ab8922ee88e10d8bdf9a792ea560f31b Sabin replied to the topic Secure Client for DigiXbee in the forum Mayfly Data Logger https://www.envirodiy.org/topic/secure-client-for-digixbee/#post-19725 Fri, 03 Jul 2026 00:32:31 -0400 Thanks for the reply.
So, how do I even do POST request to server running on the web? Are there any Wifi modules that are alternative to Xbee that supports SecureClient?

]]> 6f49b7a94f3b1f9f527485f76f388d87 Sara Damiano replied to the topic Secure Client for DigiXbee in the forum Mayfly Data Logger https://www.envirodiy.org/topic/secure-client-for-digixbee/#post-19724 Fri, 03 Jul 2026 00:30:38 -0400 No. The S6B (wifi) does not support secure clients.

]]> 1e21994dbfc6b2b8fbd18468c2664afa Sabin started the topic Secure Client for DigiXbee in the forum Mayfly Data Logger https://www.envirodiy.org/topic/secure-client-for-digixbee/ Thu, 02 Jul 2026 23:07:43 -0400 I am trying to send post request to playgrond.hydroserver.org – which requires Secure Client. Does secure client really works for DigiXbee S6b?

]]> 0b4abe5519423a837515aff1c2fcb212 Noel became a registered member https://www.envirodiy.org/activity/p/10878/ Sun, 28 Jun 2026 21:52:40 -0400 0 4e738eac73e572630772f26364b592c4 T-Nug became a registered member https://www.envirodiy.org/activity/p/10877/ Fri, 26 Jun 2026 14:39:26 -0400 0 6d96672f7f0b69ad9774d36294e03635 pedro.gerhard became a registered member https://www.envirodiy.org/activity/p/10874/ Fri, 19 Jun 2026 22:49:02 -0400 0 2d2c1dd8ef6afd95f0e66f023bf9bbab caroline@wachusett replied to the topic Hydros21 Reporting -9999 on Mayfly 0.5b in the forum Mayfly Data Logger https://www.envirodiy.org/topic/hydros21-reporting-9999/#post-19705 Thu, 11 Jun 2026 17:48:20 -0400 Hi Shannon,

 

Thank you for the response. I ran the board attached to my computer in Arduino and the red LED3 light did come on when the sample was run. I put a voltmeter across the GND and V pins and the voltage was 3.3v when the sample was collected.

 

The sketch on the 0.5b board is older than 2022 so that would explain why the new Gen2…[Read more]

]]> f9110f462bd1ca627fdaa8040ce95c43 Shannon Hicks replied to the topic Hydros21 Reporting -9999 on Mayfly 0.5b in the forum Mayfly Data Logger https://www.envirodiy.org/topic/hydros21-reporting-9999/#post-19702 Wed, 10 Jun 2026 18:45:39 -0400 All Mayfly logger board from version 0.3 to the current v1.1 (and including your v0.5v) have a separate 3.3v regulator that powers external sensors, and also the 5v boost circuit.  This secondary 3.3v regulator is turned on or off by controlling pin D22.  When the regulator is turned on, a red LED in the lower left corner of the Mayfly should t…[Read more]

]]> 33c4e2e18c4f8abed83e69d8072fe647 caroline@wachusett started the topic Hydros21 Reporting -9999 on Mayfly 0.5b in the forum Mayfly Data Logger https://www.envirodiy.org/topic/hydros21-reporting-9999/ Tue, 09 Jun 2026 11:49:47 -0400 Hello,

We have a Mayfly station with a version 0.5b board and a Hydros21 CTD sensor attached. The sensor had been working for years at the site but recently, the CTD measurements were being reported as -9999 for all three parameters. I tried troubleshooting and ended up swapping out the sensor for a new Hydros21 CTD sensor. Before deploying, I…[Read more]

]]> 9b8b1fd60f46c13e6b2625063668d8e2 RLewis became a registered member https://www.envirodiy.org/activity/p/10867/ Fri, 05 Jun 2026 15:19:10 -0400 0 42f715376d9df36b9baceb2588e97476 Ferrets became a registered member https://www.envirodiy.org/activity/p/10865/ Thu, 04 Jun 2026 20:11:14 -0400 0 84da4e58d09606eb70d45117a393a3e6 jason became a registered member https://www.envirodiy.org/activity/p/10858/ Fri, 15 May 2026 15:47:31 -0400 0 2dfe1932c9e7df0f1cc116850d5c277d neilh20 replied to the topic Relocating Data Loggers to new Sites in the forum Mayfly Data Logger https://www.envirodiy.org/topic/relocating-data-loggers-to-new-sites/#post-19685 Fri, 08 May 2026 01:20:26 -0400 Hello Kara, as someone who works with TU Mia and Troy in California, and deployed a number of systems north of San Francisco there are a few items to note.

From the description, you will need all the C++ code – the  Arduino sketch , and tools setup. You might want to reach out to the original project and see if they have that code, and if it…[Read more]

]]> 2c104f566abeb35b3b23319fe62cd4c3 Kara replied to the topic Relocating Data Loggers to new Sites in the forum Mayfly Data Logger https://www.envirodiy.org/topic/relocating-data-loggers-to-new-sites/#post-19680 Tue, 05 May 2026 16:08:41 -0400 Hi Shannon,

Thanks so much for all the help, these were originally purchased by my organization in partnership with Trout Unlimited. TU did all the preliminary set up so the manuals I had on hand only covered field installation and troubleshooting.

It looks like we have Mayfly version V1.0 (according to our manuals) and our cell board is the…[Read more]

]]> 252404195775903bd840ab5c41ff7547 Shannon Hicks replied to the topic Relocating Data Loggers to new Sites in the forum Mayfly Data Logger https://www.envirodiy.org/topic/relocating-data-loggers-to-new-sites/#post-19679 Tue, 05 May 2026 15:11:04 -0400 If you are physically relocating a monitoring station that reports to MonitorMyWatershed (MMW) then it’s best to create a new site instance on MMW for the new station.  That way all the old data that was collected at the original location will still show up on the map at the original location.  If you edit the MMW location for an existing site, t…[Read more]

]]> 7fb93b6a7a4c9479fd9c22dc2427826e Kara started the topic Relocating Data Loggers to new Sites in the forum Mayfly Data Logger https://www.envirodiy.org/topic/relocating-data-loggers-to-new-sites/ Mon, 04 May 2026 22:45:58 -0400 Hi all,

I am trying to relocate my data loggers to new locations to monitor water quality at a restoration site. These data loggers have been used in the past at separate project sites and I have several questions about updating these to the new sites.

  1. How can I update the locations? – is this something that needs to be done on Monitor My…

[Read more]

]]> 895a355f175d9a47d63a945cc27769e9 Kara became a registered member https://www.envirodiy.org/activity/p/10851/ Mon, 04 May 2026 22:31:47 -0400 0 4522ba9a86ec392cb73891b5851b4427 PRHealth-Index became a registered member https://www.envirodiy.org/activity/p/10849/ Fri, 01 May 2026 20:18:53 -0400 0 59012b75211b877f7099306067990803 Bert Rubash became a registered member https://www.envirodiy.org/activity/p/10847/ Tue, 28 Apr 2026 03:06:13 -0400 0