Activity

Sensor readings of -9999 mean the Mayfly logger isn’t receiving valid data from the CTD sensor.  If this is a brand new sensor, then it’s probably because the sensor SDI-12 channel number is set to the default channel of 0 (zero) and the Mayfly needs the sensor to be something other than that (because for Meter Group sensors, channel 0 means the…[Read more]

Yes, this was a custom board I designed for the NWS ASOS program. We are using it for a translator to connect a Vaisala HMP-155E to the ASOS. The original ASOS is RS-232 over fiber and we aren’t able to change the source code any longer. So adding a new sensor required me to make the HMP-155E talk to our system like it was a different sensor.…[Read more]

Wow nice to see the pictures and mechanical detail. I always find that a challenge to get integrated early – mostly because I’m doing everthing.  Is it part of an open source project? sounds like its for a specific translator/extender fiber optics to copper RS485/RS23   In looking over the Rpi PICO, while an amazing processor with program st…[Read more]

If you are worried about paying for cellular service you might look into Twilio. They have a SuperSim that we used in our XBee-NB/IOT units that will connect to 4 carriers. It costs $2 month for the card and they only charge you for usage. We were running MQTT w/TLS with small messages for temp every 5 and precip every 15 with other hourly…[Read more]

@neilh20 Yes, the chip supply pretty much put a spike in the Teensy 3.5 for any type of continued development and usage with that chipset. We used the 3.5 because of it’s 5V tolerant I/O. The Teensy 4.1 did not have that so the project stalled for a bit. I believe the folks who have taken that project over are considering moving the XBee to a…[Read more]

@vogelrnws I wonder how its going. I see that Teensy is moving to a Teensy4.0 CortexM7

Great, thanks @srgdamiano! Got it working on my desktop; now will deploy into the field.

One small change: The lib_deps line I used to grab the latest ModularSensors was:

envirodiy/EnviroDIY_ModularSensors

(without a version number).

I’m sorry; I’m stumped. There’s something wrong with the way the battery voltage is being read. But I don’t understand what. As soon as I turn on the debugging for it.. it works. It also works if I upgrade to the current ModularSensors master branch. But I cannot figure out for the life of me what change makes it work.

So my two suggestions to…[Read more]

I’m looking into it. I would have said “of course they should work together” but I’d never tried it, so I hooked it up and tried it out. And I got the same result as you. I haven’t figured it out yet, though.

It depends on what you mean by communicate.  Are you wanting to transmit data wirelessly between a Mayfly and another Arduino-compatible device?  Or are you meaning a direct cable connection between the two devices?  Either way is possible, but it really depends on a lot of factors, like what sort of data are you transferring, how often, and wh…[Read more]

Hello! I was wondering if the Mayfly has the ability to communicate with other Arduinos, preferably the Nano?

Thank you in advance!

If you’re using an external FTDI or CP2102 interface board to program your Mayfly via the Mayfly’s FTDI socket, then the Mayfly dipswitch labeled USB should be turned off before connecting the external interface to the Mayfly, and it should stay off the entire time.

What version of the Arduino IDE are you using?  From your screenshot, it looks…[Read more]

So, if I understand correctly, I should be able to use the USBC to Serial (CP2102N Friend, oriented properly)  via the FTDI port to upload sketches as well as access the serial monitor with the 12V to 5V DC converter plugged into the Mayfly’s USBC port (for the sensors that require 12V), but the DIP switch for the USBC on board chip needs to be…[Read more]

So, if I understand correctly, I should be able to use the USBC to Serial (CP2102N Friend, oriented properly)  via the FTDI port to upload sketches as well as access the serial monitor with the 12V to 5V DC converter plugged into the Mayfly’s USBC port (for the sensors that require 12V), but the DIP switch for the USBC on board chip needs to be…[Read more]