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That could explain why my dashcam is working fine after ten years whereas my previous job's IoT devices regularly ate SD cards. (Then again, the IoT devices wer
by 01HNNWZ0MV43FF 2y ago
That could explain why my dashcam is working fine after ten years whereas my previous job's IoT devices regularly ate SD cards. (Then again, the IoT devices were also overheating badly whereas the dashcam was designed for its purpose, kept cool while running, and runs on a low duty cycle)
What are you supposed to do, then? Buffer up writes and accept that you'll lose logs a minute or so before a power outage?
As much hell as we had with those SD cards I'd rather put tiny iPod spinners in them...
- marcosdumay 2y agoLosing the logs on a power outage may be a good compromise. Alternatively, you can buffer on a battery-powered RAM unit, accept that your cards will be short-lived, immediately send the logs through some network, not log... When you are designing the hardware, you have lots and lots of choices.
- 01HNNWZ0MV43FF 2y agoYeah. This company wasn't big enough to entertain battery backups, and the product was not expensive enough to add hardware that didn't bring in more sales. And we logged too much to pull all the logs over WAN all the time, resulting in a clever hack for remotely browsing logs with (relative) security Honestly we could have batched up the logs.
- antonkochubey 2y agoThere are industrial microSD's with pSLC memory, e.g. Kingston's SDCIT2 line. Those are significantly more durable - in a few years of using them I haven't managed to kill a single one. Much pricier per-GB, though.