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Shannon Hicks replied to the topic How to determine battery and power supply in the forum Mayfly Data Logger 1 years, 4 months ago
If you’ve got 4 heated sensors that require constant 12 volts, then I don’t think the Mayfly and the standard “battery/solar panel combo” is going to be sufficient. It would be a struggle for the Mayfly to supply the necessary continuous 100ma at 12v for the heaters, in addition to powering the various sensors intermittently. You could have a s…[Read more]
neilh20 replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 1 years, 4 months ago
Hi @shicks, just received two Mayfly 1.1 and noticed they are rev1.1B – just wondering what the differences are from rev1.1A? 🙂
I did pull the circuit diagram from https://www.envirodiy.org/mayfly/hardware/ however the resolution is so low, its not all readable. Just wondering if there is a pdf version. 🙂
I also checked…[Read more]
Braedon replied to the topic How to determine battery and power supply in the forum Mayfly Data Logger 1 years, 4 months ago
I’ve attached the specs sheet to this reply. Maybe you can help me interpret it. The following is what I was told from Apogee when I asked about the heaters:
“Regarding the <span class=”markjqg79ytz9″ data-markjs=”true” data-ogac=”” data-ogab=”” data-ogsc=”black” data-ogsb=”rgb(255, 241, 0)”>heater</span>s, you do not need to operate them all the…[Read more]
Shannon Hicks replied to the topic How to determine battery and power supply in the forum Mayfly Data Logger 1 years, 4 months ago
Sensors with heaters are another big challenge, especially if they run continuously. Are the heaters powered all the time, or only when taking a sample? Do they require 12v to operate, or was that spec just listing the power draw at 12v?
You can do some basic battery life calculations on this handy website: https://oregonembedded.com/batterycalc.htm
Braedon replied to the topic How to determine battery and power supply in the forum Mayfly Data Logger 1 years, 4 months ago
Awesome. The XBee module is an RF module, the XBee Pro S3B. I just remembered, while the apogee sensors I am using don’t require power to make measurements, they do require power for the internal heater. The pyrgeometer heaters, according to the datasheet, draw 15.4 mA and 185 mW at 12 VDC. The pyranometers draw 30.8 mA and 370s mW at 12 VDC. In…[Read more]
Shannon Hicks replied to the topic How to determine battery and power supply in the forum Mayfly Data Logger 1 years, 4 months ago
Standard practice is that when the Mayfly board goes to sleep in between measurements, it turns off all power supplied to the sensors and radio module. So the power consumed when sleeping is just the bare minimum to keep the Mayfly in sleep mode, which is usually a little less than 1 milliamp. There are ways to make it use even less in sleep m…[Read more]
Shannon Hicks replied to the topic Widespread cellular network outage today in the forum Monitor My Watershed 1 years, 4 months ago
It appears that the Hologram service interruption has been fixed and almost all of the cellular stations on Monitor My Watershed have returned to normal operation. If any stations don’t rejoin the network by later today, it might require a field visit to cycle the power or possibly replace the battery.
Braedon started the topic How to determine battery and power supply in the forum Mayfly Data Logger 1 years, 4 months ago
Hi everyone, I’m wondering what is the best way to determine how much power I need to supply to run my Mayfly and the sensors attached, and how I properly size batteries and solar panels. The sensors I have attached that require power are 3 Meter Teros 12 sensors and 1 MaxBotix sonar sensor.
For the Meter sensors, the datasheet says that the…[Read more]
Shannon Hicks started the topic Widespread cellular network outage today in the forum Monitor My Watershed 1 years, 4 months ago
There is currently an issue with the Hologram cellular network that is used with most of the EnviroDIY stations with cellular modules. The network problem is preventing all Mayfly logger stations with Hologram SIM cards from being able to send data to the Monitor My Watershed data portal. Hologram is aware of the issue and apparently has fixed t…[Read more]
Braedon replied to the topic Using Modular Sensors for METER Teros 12 in the forum Environmental Sensors 1 years, 4 months ago
@srgdamiano Sorry to bother you on this, but I still need help understanding the issues I’ve had with the Teros library.