Hi everyone,
Recently I retrieved 5 AM (model 1.2.0, firmware version 1.8.1) and found 4 cards were dead. All AM used alkaline dry batteries and 5 cards are 128G SanDisk microSDXC UHS-I. The AM with an unbroken card was the only one with power left when retrieved, and the other 4 AM ran out of power. Could this lead to the broken cards?
Some information about setup and cards:
I have enabled the "Enable low-voltage cut-off," and I assume this option is for Power failure protection.
The computer can not detect those broken cards, as if I plugged an empty card reader into the computer. I have changed the
card reader and computer (including Mac and Windows), but nothing worked.
No physical damage is visible on the surface of these cards。
Has anyone anything to comment on this? I know sometimes the cards are just broken out for no reason, but 4 out of 5 are too much. I am worrying about the AMs I haven't retrieved. If anyone knows how to save the cards or avoid damage, I will be very grateful!
Thanks a lot!
Liufeng
Hi Sirius,
Unfortunatly, I'm facing to the same problem with 2 SanDisk Ultra 128 Go. The configuration is slightly different but no majors. I used Hydromoth with firmware 1.8.1 with 3 lithium AA Energizer. According to the voltage, I'm sure that one batteries was empty ( 0.35 V ) but one was to 1.41 V. Today, the 2 SD cards are undetectables on my Windows computer. We checked on Linux and by a way, we could see there's a problem on the card.
I retrieved 3 more AMs and the cards of 2 of them are broken. Only one of the two broken AMs ran out of power, another one had power left, but the card was still broken. An interesting thing is even the functional card can not be seen by AMs, although it can be seen on my pc. When I plug this card into an AM, it will start with a long red light and then both the green and red lights will start to flash quickly.
Does the Mac Disk Utility see the card?
Are these SanDisk Extreme or SanDisk Ultra cards? Can you post the CONFIG.TXT file from the functioning card here.
This can happen when you remove the cards before switching the audiomoth off. I was always able to recover the audio data with tools like RescuePRO Deluxe (licence comes printed on the packaging of the SanDisk SD cards.