Activity – Matt Barney

Matt Barney replied to the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors 7 months, 2 weeks ago

Hi Dan,

I’m curious whether it’s possible to identify Gen 1 vs Gen 2 Hydros21; are they labeled? I’m wondering what I’ve got.

Thanks,

Matt

Matt Barney replied to the topic Meter Hydros 21 address in the forum Mayfly Data Logger 7 months, 3 weeks ago

Ok, I see. Thanks so much for taking the time to provide all these details – very helpful!

Best,
Matt

Trout Unlimited

Matt Barney replied to the topic Meter Hydros 21 address in the forum Mayfly Data Logger 7 months, 3 weeks ago

Thank you both for those details!

So to be clear: if I have only 1 SDI-12 sensor on the bus, and it’s at address 0, it should work properly with ModularSensors, even if I’m averaging 6 readings and collecting conductivity, temp, and depth each time. Is that correct?

Matt Barney replied to the topic Meter Hydros 21 address in the forum Mayfly Data Logger 7 months, 3 weeks ago

Thanks Anthony. That warning is pretty clear. But I wonder why that’s a constraint.

It looks like “0” is a valid address according to the SDI-12 spec, and Meter supports it. Perhaps there’s something in ModularSensors that doesn’t like it. Scanning through the code, I don’t see anything right off.

Matt

Matt Barney started the topic Meter Hydros 21 address in the forum Mayfly Data Logger 7 months, 3 weeks ago

When using the Hydros 21, is there any problem with leaving its SDI address at 0 and updating the address in the code to match? The reason I want to do this is that I have a user who’s purchased the sensor, and I’m preparing to program and ship a Mayfly kit to them. They’re located across the country from me, so I don’t have access to their…[Read more]

Matt Barney replied to the topic Testing power consumption in the forum Mayfly Data Logger 8 months ago

@srgdamiano
Hi Sara, any advice on the question above, about powerUp/powerDown vs. wake/sleep?

Matt

Matt Barney started the topic New sensor request in the forum Environmental Sensors 8 months, 1 week ago

Hi,

I’d like to request a new sensor to be added to Monitor My Watershed. It’s made by Turner, and is called a Turner Turbidity Plus. It reports 2 variables: a voltage reading (Volts) and turbidity (NTU). It’s similar to the Cyclops-7F-T Turbidity that is currently available in MMW.

Thanks!
Matt

Trout Unlimited

Matt Barney replied to the topic Testing power consumption in the forum Mayfly Data Logger 8 months, 2 weeks ago

Thanks to both of you for your responses! I think I had just figured out the cause of my problem right about the time you were posting them, but needed to continue refining and testing my code before replying.

What’s working now is:

In the sensor’s setup() function, set trigger pin to an output
at powerUp(), set pin HIGH
at wake(), run the…

[Read more]

Matt Barney replied to the topic Testing power consumption in the forum Mayfly Data Logger 8 months, 2 weeks ago

Trying to track down and eliminate my my Mayfly’s excessive power draw during sleep, I rebuilt my circuit to use the Mayfly’s onboard ADS1115 via voltage dividers, but got the same results; my sleep current is still around 6 mA. However, I discovered that if I disconnect the Turner’s wiper trigger wire from D10, sleep current drops to around…[Read more]

Matt Barney replied to the topic Testing power consumption in the forum Mayfly Data Logger 8 months, 2 weeks ago

@shicks The previous thread about I2C power that I’m aware of was when I learned that the jumper on the I2C grove port needs to remain in the constantly-powered position, otherwise the Wire library crashes, at least with certain sensors, including the Turner.

I *think* my Mayfly is sleeping: All LEDs switch off, if that means anything. If I…[Read more]

Matt Barney replied to the topic Testing power consumption in the forum Mayfly Data Logger 8 months, 2 weeks ago

@shicks Thanks for those details. I wonder whether it could be the turbidity sensor, rather than the Mayfly, that’s actually drawing power, but I wouldn’t have thought it could do that while (or if) the Mayfly is sleeping. A bit more about my circuit:

I’m powering the Turner from Mayfly’s switched 3V3. The Turner’s analog output is 0-5V, which…[Read more]

Matt Barney started the topic Testing power consumption in the forum Mayfly Data Logger 8 months, 3 weeks ago

Hi all,

I’ve been doing some testing to measure the amount of power consumed by my Mayfly during various modes, and thought I’d share my results here. I’m interested in any and all feedback from the community.
I’m using the SparkFun coulomb counter that I’ve plugged into a spare Mayfly, which reports via USB to my laptop. Its set up to sample the…[Read more]

Matt Barney replied to the topic Mayfly low battery voltage readings in the forum Mayfly Data Logger 8 months, 3 weeks ago

Hi Neil,

I’m powering the Turner Turbidity Plus via the Mayfly’s 3.3V, and its average current draw during wiper cycles is 109mA.

Thanks for sharing your wingboard. As far as wiring, I have some of the EnviroDIY protoshields that I plan to use. I’m interested in how, physically, you connected the Vbat to your ADC for measurement. Are you using…[Read more]

Matt Barney replied to the topic Mayfly low battery voltage readings in the forum Mayfly Data Logger 8 months, 3 weeks ago

Aha – I think that must be it. I retested with a new Mayfly, and its reported voltage agrees with my multimeter within 0.1V. The old Mayfly (s/n is either 180080 or 190080) was probably purchased in 2018, and has been my desktop tester, almost always under USB power, so didn’t detect any problems until now.

Thanks @shicks!!

Matt

Matt Barney started the topic Mayfly low battery voltage readings in the forum Mayfly Data Logger 8 months, 3 weeks ago

I believe that the Mayfly is reporting a battery voltage that’s erroneously low. I have a 4400mAh lipo that measures 4.16V fully charged, and I’m connecting it to the Mayfly on my desk and running a program with a 3-minute sampling interval. During the measurement cycle (including LTE modem operation), the lowest reading seen on my multimeter is…[Read more]

Matt Barney replied to the topic PlatformIO error with MS 0.28.01 in the forum Mayfly Data Logger 8 months, 3 weeks ago

Hi Nancy,

I don’t use the Arduino IDE, but as a workaround, I’d try downloading a previous version of ModularSensors. Delete ModularSensors from your Arduino libraries folder, and grab a zip of the previous version, 0.27.8 from the Releases page on github and install it instead.

-Matt

Matt Barney replied to the topic PlatformIO error with MS 0.28.01 in the forum Mayfly Data Logger 8 months, 3 weeks ago

Confirmed via the PIO forum: https://community.platformio.org/t/valueerror-invalid-simple-block-0-28-01/19759

Matt Barney replied to the topic PlatformIO error with MS 0.28.01 in the forum Mayfly Data Logger 8 months, 4 weeks ago

I suspected that was it! Confirmed that the .1 works for me as well.

I don’t believe 0.28.01 is valid, per semver.org: “Numeric identifiers MUST NOT include leading zeroes.”

Interestingly, sometimes PIO will fail silently when I use 0.28.01 via lib_deps (no error message), but it doesn’t install the lib dependencies at all. When I change it to…[Read more]

Matt Barney started the topic PlatformIO error with MS 0.28.01 in the forum Mayfly Data Logger 8 months, 4 weeks ago

When adding ModSensors 0.28.01 to a new project, I get the error: ValueError: Invalid simple block ‘^0.28.01’. I’ve included the full error text in the attached file. I’m getting this on multiple PCs, and other versions of MS do not give me this error.

I suspect this is a PlatformIO problem, but I’m posting here to see if others have seen it or…[Read more]

Matt Barney replied to the topic Case for Lower Threshold Voltage on Mayfly Stations in the forum Mayfly Data Logger 9 months ago

Thanks Jim. Ohm’s law – copy that! 🙂

The coulomb counter I’m using is from Sparkfun. It pulses one of its pins low each time that 0.614 coulombs of charge have passed through its sense resistor. Very easy to use.

Regarding the decreasing current: Is it possible that the battery’s internal resistance is increasing as it discharges, and this…[Read more]

@mbarney