All content on EnviroDIY is licensed as Creative Commons Attribution-ShareAlike 4.0. Hardware designs on EnviroDIY are released under the CERN Open Hardware License 1.2. Alternative licenses are available. Learn more
All content on EnviroDIY is licensed as Creative Commons Attribution-ShareAlike 4.0. Hardware designs on EnviroDIY are released under the CERN Open Hardware License 1.2. Alternative licenses are available. Learn more
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Jon Van G became a registered member 1 years ago
Jon Van G
@vangray
Zoe Tressel became a registered member 1 years, 1 months ago
Zoe Tressel
@ztresse
Braedon replied to the topic How to determine battery and power supply in the forum Mayfly Data Logger 1 years, 1 months ago
Great idea! Thanks @shicks!
neilh20 replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 1 years, 1 months ago
Many thanks got it. I appreciate the effort and detail that goes into producing a new production run. The pogo pin connector is great and so simple.
Got the .pdf – I copied the .jpg instead of more intelligently clicking it to get the .pdf!
Just wondering if you have any thoughts on changing the Vbat Rs to 1M / 270K for better noise i…[Read more]
Shannon Hicks replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 1 years, 1 months ago
The only differences between the v1.1 revA and revB are this:
The ICSP jack was a 2×3, 0.5″ pitch male pin header on Mayfly v1.1 revA.
The ICSP jack is now uses Tag-Connect pads for use with Pogo pins for ICSP programming for the Mayfly v1.1 revB.
And with the revA boards, there was a circuit design change after manufacturing that required me to…[Read more]
Shannon Hicks replied to the topic How to determine battery and power supply in the forum Mayfly Data Logger 1 years, 1 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, 1 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, 1 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, 1 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, 1 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]