Activity – EnviroDIY

James_NZ started the topic Helium Network- Compatibility with Mayfly in the forum Mayfly Data Logger 3 years, 4 months ago

Hi guys,

Im just wondering if anyone has considered using the Helium network with the Mayfly? Essentially it’s a LoRaWAN network where the infrastructure is owned by the public. They are incentivising network expansion by rewarding hotspot owners with HNT, their own cryptocurrency.

Im interested because there is potential to establish a local H…[Read more]

Charitha (CJ) replied to the topic How to get a 5V signal out based on a sensor reading in the forum Mayfly Data Logger 3 years, 4 months ago

Thank you so much for the replies. The 5V signal duration varies with site and rain event conditions. However, with my previous field work, using a campbell system, the valve controlled by the actuator was open (5V) for an average of 10 mins (but could be a few hours on extreme rainfall events). How would the duration affect the mayfly? I’m using…[Read more]

Selbig replied to the topic Logging Mayfly with Decagon SDI-12 Sensor in the forum Mayfly Data Logger 3 years, 4 months ago

I was able to get it to work correctly. The only thing I changed was removal of the UUIDs for all of the variable pointers. I also moved the voltage pin so D7 was getting 5v instead of 3.3. I don’t know if that was what caused the initial error but it’s working now.

Shannon Hicks replied to the topic How to get a 5V signal out based on a sensor reading in the forum Mayfly Data Logger 3 years, 4 months ago

What’s the duration of the 5v signal you want to generate? And how much current does the 5v actuator draw? Pin D22 controls the switched 3.3v and 5v outputs together, so there’s no way to separate the two. However, a Hydros-21 CTD sensor uses very little current when it’s constantly powered, so you could plug the CTD into the D4-5 Grove ja…[Read more]

Shannon Hicks replied to the topic Logging Mayfly with Decagon SDI-12 Sensor in the forum Mayfly Data Logger 3 years, 4 months ago

I’d need to see the rest of your sketch to make sure everything else is set up correctly for reading the sensor properly. Can you post your entire sketch, and tell me what version of the Modular Sensors library you’re using, and when you downloaded the other recommended supporting libraries like the EnviroDIY_SDI12 library?

Selbig replied to the topic Logging Mayfly with Decagon SDI-12 Sensor in the forum Mayfly Data Logger 3 years, 4 months ago

I am able to retrieve values from my Decagon ES2 sensor, but only temperature. Conductivity comes back with a value of 0.0. When I hook it up to a Campbell Scientific CR1000 logger, both conductivity and temperature come back with reasonable values. In fact, temperature is the same using the CR1000 as it is the Mayfly. I’m using the pre-programmed…[Read more]

Anthony Aufdenkampe replied to the topic How to get a 5V signal out based on a sensor reading in the forum Mayfly Data Logger 3 years, 4 months ago

Check out this repo: https://github.com/EnviroDIY/Trigger

This example sketch shows how it would be used in combination with the ModularSensors library: https://github.com/EnviroDIY/Trigger/blob/master/examples/simple_logging/simple_logging.ino

It’s old, so some components are probably outdated, but it’s generally what you’re looking for.

Charitha (CJ) started the topic How to get a 5V signal out based on a sensor reading in the forum Mayfly Data Logger 3 years, 4 months ago

I’m trying to send out a 0-5V signal out to an actuator to be controlled using data collected thorough a CTD sensor (Hydros 21). I have used the ‘DRWI_NoCellular.ino’ sketch referred in the monitoring station manual and was able to get the data logger to collect and store the data. I’ve been trying to figure out how to send out a signal. I read…[Read more]

Scott Ensign replied to the topic Atlas Scientific Sensors and Carrier Board Compatibility in the forum Infrastructure and Equipment 3 years, 5 months ago

Fiona, if you haven’t already found it, check out Adam Gold’s blog about using the Mayfly with Atlas Scientific sensors. Adam’s github has documentation about a carrier board that may involve isolation.

James_NZ replied to the topic Hydros 21 CTD – Losing connection? [SOLVED] in the forum Environmental Sensors 3 years, 5 months ago

I had a lightbulb moment today that seems to have fixed my problem. I switched the 3.3v jumper to 5v. Success!! I guess it was brown-out.

James

James_NZ replied to the topic Hydros 21 CTD – Losing connection? [SOLVED] in the forum Environmental Sensors 3 years, 5 months ago

I have switched my pin for the HYDROS 21 CTD from D7 to D11, but I seem to be having the same issue. It’s worth noting that I don’t get -9999 values when plugged into my computer. Could it have something to do with power?

My code is b…[Read more]

James_NZ replied to the topic Hydros 21 CTD – Losing connection? [SOLVED] in the forum Environmental Sensors 3 years, 5 months ago

Hi Shannon,

Yes I am on D7 for the CTD. I am using the default pins for the mayfly modbus wing (https://github.com/EnviroDIY/Mayfly-Modbus-Wing/tree/master/Modbus-Mayfly_WingShield):

Communication is hardwired to Mayfly digital pins 5 & 6, which enable use of the AltSoftSerial library.
Read more at our Notes on Arduino Streams and Software…

[Read more]

Shannon Hicks replied to the topic Hydros 21 CTD – Losing connection? [SOLVED] in the forum Environmental Sensors 3 years, 5 months ago

Does your Modbus wingshield do any level shifting of the CTD’s SDI-12 data line? Is there anything on the wingshield tied to whatever Mayfly pin you’re using for the data line (I’m assuming D7)?

Matt Barney replied to the topic Purchasing Yosemitech Sensors in the forum Environmental Sensors 3 years, 5 months ago

Thank you James!

Matt

James_NZ started the topic Hydros 21 CTD – Losing connection? [SOLVED] in the forum Environmental Sensors 3 years, 5 months ago

Hi all,

I am testing a Mayfly setup with a HYDROS 21 CTD and a Yosemitech 511-A turbidity sensor. The Turbidity sensor is working well, but the CTD seems to intermittently dropping in and out (see attached MMW plots).

Any thoughts on what might cause this? I have set the CTD address to channel 1 as per instructions. I did notice that the…[Read more]

James_NZ replied to the topic Purchasing Yosemitech Sensors in the forum Environmental Sensors 3 years, 5 months ago

Hi Matt,

This is an old thread but I have recently purchased ten Y511-A sensors from Yosemitech.

My contact is called Zoe “sunxian@yosemitech.com”.

HTH

James

Rory G replied to the topic Purchasing individual parts from starter kit in the forum Mayfly Data Logger 3 years, 5 months ago

I’m not sure how I missed the SD card reader on the board. I’ll see if my Tech guy can re-write to that. Thanks!

As for shipping, I’ll give one of those forwarders a try. Really wish it could be sold on amazon.ca though. I’m a bit of a leader in the low-cost data logger/sensor scene for British Columbia hydrology folks, but unfortunately, I’m…[Read more]

Shannon Hicks replied to the topic Purchasing individual parts from starter kit in the forum Mayfly Data Logger 3 years, 5 months ago

We sell a 5-pack of the vertical microSD card adapter in our online shop: https://www.envirodiy.org/product/envirodiy-vertical-microsd-card-adapter-pack-of-5/

We only ship to US address though, so you’ll have to figure out a mail forwarding service for Canada.

That said, there’s already an onboard microSD card socket on every Mayfly that does…[Read more]

Rory G replied to the topic Purchasing individual parts from starter kit in the forum Mayfly Data Logger 3 years, 5 months ago

Just wanted to check if I could purchase only the SD card reader I have two boards where both SD card readers that had soldering joints fail on them. I would be incredibly appreciative if I could buy just the one replacement part and have someone stick it in an envelope and mail it to a Canadian address.

If not, I’m out about ~$3,000 in equipment…[Read more]