[Dawn]

It was ExFAT formatted, now FAT32 formatted and working! It’s great when the fix is so easy. Thank you!

[Dawn]

I have a new Mayflyv1.1 board and it does not recognize the microSD card (it’s side loaded into the board without any adapter). I am using the mayfly1_TempHumidLight_simpleLogger example with no changes. When I turn on the Mayfly board, I get:

Mayfly SHT40-Light Logger Error: SD card failed to initialise or is missing. Data Record: 2000-01-01 00:00:09,9,4.88,49.90,27.26,10.9112

1 2 3

Mayfly SHT40-Light Logger Error: SD card failed to initialise or is missing. Data Record: 2000-01-01 00:00:09,9,4.88,49.90,27.26,10.9112

I’ve tried a couple of different microSD cards, both of which work for other devices. How should I approach debugging this or might it be a hardware problem?

[Dawn]

Thank you so much, Shannon!

[Dawn]

Yes, on all those dependencies. I’ve ordered but haven’t received the Mayfly 1.1. I need to choose the sampling interval and battery mAh for the system so that we can get the most data over the deployment period with plenty of spare power capacity to ensure data collection at the end of deployment, which is the most important.

I have all the mA pull for the Atlas sensors and their electrical isolation boards. I’ll be using a Whitebox T1 (https://atlas-scientific.com/electrical-isolation/whitebox-t1/) for some of them and have asked for that power draw. It has an integrated SD card port. There won’t be any telemetry as we’re deploying them in an Antarctic lake and retrieving them after ~9 months. The temperature will be 1.0° C (the temperature of the lake water) plus the heat produced by the electronics in the underwater housing.

In looking at batteries, I think I’m going to power the Mayfly, Whitebox, and 4 additional sensors separately. Thus, I need to know what the Mayfly will draw under my conditions to choose an appropriate power source.

[Dawn]

I need to calculate the expected power consumption for a 10 month deployment, fully battery powered (no solar). Where can I find specs on the Mayfly power consumption? I realize that it will vary depending on dip switch settings (as Shannon mentioned above), so data to calculate power consumption based on their settings would be amazing.

Thanks – Dawn

[Dawn]

Fiona, I just joined the forum with the same question. Did the Whitebox T1 work for you (or anyone else out there)?

[Author]

Posts