2 ms·

> Live-stream* > *Feature requires 5G Wi-Fi or mobile data and minimum ambient temperature condition of at least 5°C. Performance varies based on user locatio

by bArray 3y ago

> Live-stream* > *Feature requires 5G Wi-Fi or mobile data and minimum ambient temperature condition of at least 5°C. Performance varies based on user location, device battery, temperature, Internet connectivity and interference from other devices, and many other factors. Connection is understandable (although in some cases 4G will actually be faster). But that temperature requirement for operation is actually quite strict. Any idea why that might be?

Crosseye_Jack 3y ago
Just thinking out loud. Battery damage at a guess. Video streaming can be pretty power hungry (you’re running the camera, encoding the video, and flinging those bits over the air) on a device that sits on your face. Depending on the construction of the device you can rely on the heat from doing that work to warm the battery up so not so bad (think your smart phone, which also spends most of its time in your pocket while outdoors so doesn’t get “that cold” to begin with), these glasses could have their battery further away from the electronics (thinking out loud prob battery in one arm, electronics in the other) and are probably more prone to be uninsulated form the elements while out and about.
- bArray 3y ago
  > Battery damage at a guess. Video streaming can be pretty power hungry (you’re running the camera, encoding the video, and flinging those bits over the air) on a device that sits on your face. I thought about that, but surely internal battery resistance would be lower at lower temperatures? The other thing I thought about is some movable part of the device, such as a lens that has some actuation. You might just refuse to work at near freezing temperatures to prevent damage to that?
  - Crosseye_Jack 3y ago
    Its been a while since I did any major research on the matter (Thankfully I only deal with batteries indoors these days) but iirc when I used to build homemade RC airplanes, the internal resistance does start increasing the lower the temp gets and that the anode starts getting damaged (at least it wears quicker) discharging the battery at lower temps. My guess as to why they do it, is to maintain the "expected battery life cycles". >The other thing I thought about is some movable part of the device, such as a lens that has some actuation. You might just refuse to work at near freezing temperatures to prevent damage to that? Very possible. EDIT: However, if it was mechanical, why doesn't there seem to be such a restriction while taking photos?
    - bArray 3y ago
      Wasn't aware of the battery chemistry involved, thanks!

by bArray 3y ago

Crosseye_Jack 3y ago

Just thinking out loud. Battery damage at a guess. Video streaming can be pretty power hungry (you’re running the camera, encoding the video, and flinging those bits over the air) on a device that sits on your face. Depending on the construction of the device you can rely on the heat from doing that work to warm the battery up so not so bad (think your smart phone, which also spends most of its time in your pocket while outdoors so doesn’t get “that cold” to begin with), these glasses could have their battery further away from the electronics (thinking out loud prob battery in one arm, electronics in the other) and are probably more prone to be uninsulated form the elements while out and about.

bArray 3y ago
> Battery damage at a guess. Video streaming can be pretty power hungry (you’re running the camera, encoding the video, and flinging those bits over the air) on a device that sits on your face. I thought about that, but surely internal battery resistance would be lower at lower temperatures? The other thing I thought about is some movable part of the device, such as a lens that has some actuation. You might just refuse to work at near freezing temperatures to prevent damage to that?
- Crosseye_Jack 3y ago
  Its been a while since I did any major research on the matter (Thankfully I only deal with batteries indoors these days) but iirc when I used to build homemade RC airplanes, the internal resistance does start increasing the lower the temp gets and that the anode starts getting damaged (at least it wears quicker) discharging the battery at lower temps. My guess as to why they do it, is to maintain the "expected battery life cycles". >The other thing I thought about is some movable part of the device, such as a lens that has some actuation. You might just refuse to work at near freezing temperatures to prevent damage to that? Very possible. EDIT: However, if it was mechanical, why doesn't there seem to be such a restriction while taking photos?
  - bArray 3y ago
    Wasn't aware of the battery chemistry involved, thanks!