Matt Barney

Hi all,

Glad to hear about others using radio modules to relay Mayfly data to in internet connection. And Anthony, it’s great to hear about the mDot modules potentially being incorporated in ModularSensors. That’s something that we at Trout Unlimited will definitely be interested in exploring in the coming months. I could possibly contribute some…[Read more]

Oh, now I see the Mayfly protoshield: https://www.envirodiy.org/mayfly/hardware/accessories/. It happens to be out of stock at Amazon at the moment, but that’s OK, I don’t have an immediate need. It would work, but would also require adding/moving the Grove sockets to the protoshield if one still needed those.

I was implementing a TTL-based…[Read more]

Thanks Neil.

Initially I thought I could use screw terminals but soon realized that the male pins that protrude from them are not long enough to provide a secure plug-in to the 20-pin headers. Perhaps my best solution will be to solder screw terminals to a small perfboard or proto board, along with male headers which would plug into the 20-pin…[Read more]

Yep, that was it. When I didn’t find the library in EnviroDIY, I just grabbed it from slashdevin’s original. Now that I have your fork of NeoSWSerial, it works. Thanks!

Any ideas why AltSoftSerial works here, but NeoSWSerial doesn’t?

Do people just use individual jumper wires to the Mayfly pins on these headers? Or is there a modular cable of some type that works with them?

I repeated my test for another ~48 hour run, sampling every 5 minutes, but this time using WiFi instead of XBee3 cellular. All of my 548 sample points made it to the MMW database, and all POST messages sent by the Mayfly received successful response code 201. So data upload via cellular appears to be significantly less reliable, even when cell…[Read more]

Great news, @aufdenkampe! Thanks to you and your team.

I ran a test overnight, with a Mayfly sampling every 5 minutes. Out of 179 samples sent to MMW, only one received Response Code 504, at 04:30 MST, Aug 7th. All other POST messages received successful response codes (201). The 04:30 point did not get saved to the MMW database. What I’ve…[Read more]

I’m not an expert, but based on the Mayfly schematic (see pins 19 and 20 on the ATMega1284P, upper left), it looks like SDA and SCL are pulled high via external resistors on the board, so there is no way to disable them in code.

Reading a tutorial at Adafruit, it looks like that is an inherent part of the design of the I2C protocol:

The I2C clock…

[Read more]

I think my code must not be catching the interrupt properly. It doesn’t get beyond this line in MaxBotixSonar.cpp:

result = _stream->parseInt();

I am able to get it working by using AltSoftSerial (Rx on pin 6), but am unable to get NeoSWSerial to read from the MaxBotix sensor.

Any help is appreciated.

Thanks,
Matt

I’ve probably done something dumb in my code, but can’t see what it is, so I could use another set of eyes on it…

I’ve got a MaxBotix MB7589 SCXL-MaxSonar-WRMT and have it communicating via NeoSWSerial on pin 7. Using the single_sensor.ino example, it works fine. Now I’m trying to integrate it a logging sketch, based on DRWI_NoCellular.ino, and…[Read more]

OK, thanks Sara. I really like the look and layout of the new Doxygen docs. Thanks for all your efforts!

Matt

Apologies for resurrecting an old thread, but it is exactly on-topic for my situation.

I’m confused about wiring the MaxTemp. The ModularSensors documentation says to connect the red wire from MaxTemp to the MaxSonar’s pin 6 (V+). However, the MaxBotix datasheet shows no connection of the MaxTemp to V+. Likewise, @fisherba Beth’s photo above…[Read more]

Thanks, Anthony, for this informative post! It speaks to some questions we at Trout Unlimited have had about MMW, its current performance, and future direction, as we look to expand our Mayfly deployments.

Matt

(cc @jlemontu-org)

Me too. The problem seemed to be specific to the one browser tab; when I opened a second (non-incognito) tab, it worked. Never had that happen before with MMW.

Thanks again,
Matt

Hi Robert,

Hmm looks like it is browser-related. I tried again just now and still didn’t work, but it does work in an Incognito window, so not sure what’s up. My colleague reported that it wasn’t working for him this morning, so I checked and it didn’t work for me at that time either.

Thanks for your reply,

Matt

Hi Neil,

Thanks for opening up this important topic, and for sharing your work!

This idea of scaling up one’s Mayfly installations is really coming to the fore at my organization, Trout Unlimited (TU). My colleague Jake (@jlemontu-org) has been working with Stroud for a couple of years now to deploy Mayflys with volunteer groups in Michigan,…[Read more]