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I’d really like to know what the various flashing light patterns mean. If this is documented somewhere I must have missed it.
Hi Peter,
The only well defined code is the “slow blink” (1s on, 1s off) in the bootloader. In application mode, the LED simply turns on when the meter’s processor is awake. So in hibernation mode, you see it come on for a short time once every 10 seconds or so. When connected and sampling, you’ll see it blink at different rates depending on the sampling parameters. And in logging, you’ll see it come on every time the meter wakes up to take a sample and write to SD.
I hope this helps. Is there a specific behavior I can help you understand?
Thanks
~JamesJust curious. It seemed that I was getting into a mode where the light came on solid for quite a while. Experimenting now, I find that when I initially load the app, after connecting, the numeric display comes up, but then after a few seconds (of blinking) the light comes on solid for about 20 seconds, then goes back to blinking. I don’t know if this was what I was seeing yesterday. Now that you explain that it’s processor activity, I’m thinking it may be doing some kind of initializing. Just knowing that it’s a rough indicator of processor activity is handy to check that logging is still active, for instance.
Hi Peter,
Oh that is actually very interesting. I haven’t seen the 20-second-led-on behavior before. If I had to guess, I would guess there’s some strange interaction happening with the SD card when you connect to the meter. There have been a couple of users reporting oddities with certain brands of SD card. But if it’s not interfering with your ability to use the meter, I wouldn’t worry about it for now.
Thank you for the details! Let me know how else I can help.
~JamesOK, if it’s any help, the SD is a brand new SanDisk “Ultra”, 32GB.
