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Edited: Jun 20, 2021

SD cards beyond 64 Gb

The guide

does not mention cards > 64 gb.

As this is a market that changes at a fast rate (video recording puts a lot of pressure to makers), I wonder if this information is still valid

or perhaps there are cards > 64 Gb that could be used (and have been tested) with Audiomoth nowadays.

I suggest you clearly note the date in this type of guides.

7 answers5 replies

12 Comments

jaybarlow33

Dec 22, 2021

I have tried larger cards including the SanDisk Extreme 400 GB card, and I had no problem. However, larger cards draw more power for the same storage. Much of your battery capacity will go to the SD card. Recording continuously at 192 kHz, the 64 GB card draws 25 mA and the 400 GB card draws 36 mA (for an AudioMoth Dev 1.0.0 board). At a continuous 384 kHz, the values increase to 42 mA and 62 mA (respectively). Not only does your power requirement go up with card size, battery capacity in Ah goes down at these higher draw rates ... a double whammy. Ideally you'll want to match your card to your battery capacity to maximize data for a deployment. Using 3 alkaline AA batteries at high sampling rates (192 or 384 kHz), a 128 GB card is likely to be your best choice to maximize data collections. I plan to test that card next.

jaybarlow33

Dec 25, 2021

Replying to

Following up on this, I tried the 128 GB SanDisk Extreme Pro and found that it requires MORE power than the 400 GB SanDisk Extreme. Recording continuously, the 128GB card required 38 mA and 68 mA for continuous recordings at 192 & 384 kHz (respectively). Does PRO stand for Power Requirements Outrageous? Has anyone found a lower power 128 GB uSD card that works with the AudioMoth

jaybarlow33

Jan 06, 2022

Replying to

Another follow-up: I tested the Samsung Evo uSD card recording continuously at 192 & 384 kHz. The power required was 37 mA and 55 mA (respectively). This is very similar to the 128 GB SanDisk Extreme Pro card at 192 kHz but is about 20% less at 384 kHz.

Agustin Lobo

Aug 15, 2021

Any news regarding the updated sd guide? Please state the date of publication on it.

Pierre

Jun 22, 2021

Since early April this year (2021) I'm routinely using 128GB SDXC memory cards. 113 GB available, holds 10 nights (8 hours) at 192 kHz.

Agustin Lobo

Jul 03, 2021

Replying to

Thanks for the info, could you please state the actual manufacturer(s) and model(s) with which you have experience? It would be very useful.

Pierre

Jul 03, 2021

Replying to

@Agustin Lobo I'm using Samsung Evo Plus Micro SDXC CLASS10 U3 128GB. They can be purchased for about 13 € each on the Net.

AudioMoth's (Firmware 1.6) seem happy with them: closing file+creating new file takes consistently less than 2 seconds so for recording 30 minutes slices the duty cycle can be 1798+2 (instead of 1796+4 with 64GB SanDisk Extreme Pro).

Agustin Lobo

Jun 21, 2021

Thanks. I stay tuned for your results.

Alex Rogers

Jun 20, 2021

Hi Agustin, We don’t have direct experience of using cards larger than 64GB but there is no technical reason why they wouldn’t work fine. We’re currently testing out 128GB and 256GB cards, and will update the guide when we have some results. Alex

Anna Bastian

Jun 23, 2022

Replying to

Dear Alex, have you managed to test lager SD cards yet? It would be much appreciated.

anton.baotic

Nov 29, 2022

Replying to

Dear Alex,

I am also very curious about the same thing. Have you already successfully tested the 256GB cards?

Would you say that theoretically 512GB or even 1TB cards are also compatible with Audiomoth? If so would these SD cards need to meet specified technical requirements?

Thanks so much,

Anton

Alex Rogers

Nov 29, 2022

Replying to

SanDisk Extreme 128GB and 256GB work well, and larger cards would also be compatible. Beyond 256GB you are typically limited by battery capacity rather than SD card capacity.