Thank you very much for your answers! I understand that I don’t need such a large panel, but that one is already in the field an I could plug into it.
Would this transformer from 12v to 6v work? or do you recommend a different one?…[Read more]
What version of the Mayfly board do you have? The newer boards have a different regulator than earlier versions, so make sure you’re looking at the right datasheet and resistors.
If you’re comfortable removing and reinstalling SMT resistors, then it is possible to remove that resistor and replace it with another one to achieve different output…[Read more]
ChanCafun is right, you definitely don’t want to connect any panel to the Mayfly’s SOLAR jack that has a voltage higher than 6 volts. I wrote a post about solar panel options earlier this year: https://envirodiy.org/topic/dying-batteries-in-winter/#post-2051
Since that post, we’ve released the Mayfly v0.5 that has the option for directly…[Read more]
I designed my datalogger using Mayfly with a 4000mAh 3.7 Li battery and a 0.75W 6V solar panel.
Sleep mode was added.
The battery can last for 30 days (4.13V drop to 3.7V) without solar panel. If solar panel added, It can provide enough power even during cloudy day.
10W solar panel may be too much. But it is really depend on the power…[Read more]
I am working on reading the In-situ LevelTroll 400 water level sensor through Mosbus, it required a 12V-24V input.
I have check the Mayfly sw5V boost SC4503 datasheet, it allow step up voltage up to 27V.
If I follow the output voltage formula in the datasheet R1 = R2 (Vout/1.25V – 1), If Vout = 12V, R1/R2 = 8.6
I need to modify the…[Read more]
Hello, is it possible to connect the Mayfly to a 10w or 20w solar panel that also has an output of 12volts? or would that be too much and would overcharge the batteries or damage the board?
Thanks in advance!
Shannon – thanks for the reply. I first heard of the EnviroDIY at the Society for Freshwater Science annual meeting this summer. They mentioned that there may be workshops to “train the trainer”, is this a possibility? Any chance you could come back out this way to do a little training? We are not as large as the Western Minnesota River Watch…[Read more]
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