7 ms·

I have a couple questions which don't seem to be answered on the website if anyone knows the answers. 1. Is the battery a rechargeable or normal battery that I

• spydertennis 16y ago
  1. Rechargeable. Lasts about 2-3 nights depending on how long you sleep. 2. Not yet.
  • Sephr 16y ago
    Could you elaborate as to why it's only 2-3 nights of battery life? I'd expect much more from something like this.
    • Zev 16y ago
      Wakemate uses bluetooth, doesn't it? Thats bound to eat up power.
      • Sephr 16y ago
        Bluetooth shouldn't ever be on except for when it needs to upload sleep data to your phone though (which I assume is done right when waking up).
        • brandon 16y ago
          That's putting a lot of stock into the device itself. Conjecture: I think it's more likely that the device is something of an accelerometer paired with a bluetooth radio that can nearly continuously feed the phone/app with movement data so that the app can decide whether or not to rouse you. Rationale: The algorithm. Assuming they want to tweak their actigraphy parameters, if the algorithm is running on the wristband you're going to need to drop new firmware on the device. Field-flashing embedded devices is to be avoided at all reasonable costs.
          • Sephr 16y ago
            Field-flashing isn't that bad as long as it can safely be done over bluetooth, and I'd be willing to take that risk to have reasonable battery life.
            • brandon 16y ago
              So, again, I don't know anything about the device in question, so this is all conjecture... but: Even given that OTA flashing is possible, why bother? The device has no means of waking the user without a phone in bluetooth range, so what's the upshot? I don't know that battery life falls into that category because the device would need some pretty serious upgrades, and cost would obviously increase: - More RAM. Lots more. Enough to contain an entire firmware image during OTA and an entire night of sleep/movement history. - More MIPS. Actigraphy isn't going to be as cheap as store-and-forward. - A reliable RTC so that the device can ping the phone at the right wakeup time. - etc. If I was in their position, I'd build the device to be as dumb a peripheral as possible. Push the complexity out of expensive hardware and into software. I'd also probably have built in a sweet inductive charging pad, too, but I'm a sucker for shiny things.
  • geekfactor 16y ago
    The FAQ on the web site currently says 6 nights. Might want to update that.