81 replies to this topic

[giovanni]

Thank you ED...
In the next update it will be better if you give us some information about how the prototyping process is going on...
However thanks

Hmm? What else is missing?
The roadmap is on the main news page, after the battery prototypes are there, the case design will be finished (deadline January 15th) and then the case will be prototyped...?

Thanks for the very fast reply.

When we talk about 'protptype' (now that we are in January and can't apply relevant changes to its design), are we talking about a first and not a sperimental case?

[mali]

@MiniSinisterMinister
AFAIK you will have to loosen four screws to remove the battery.

Edited by mali, 10 January 2009 - 03:42 PM.

[peca]

We have decided to stick to 27mm and a custom battery size to use every last mm of space, the battery will be ~4000mah...

Are batteries on photo really 27 mm thick? They seems a lot thinner.

[mali]

27mm is the thickness of the whole Pandora

[azurege]

I hope it is easy to replace the battery, or the spare one I ordered with the Pandora will be pretty useless

Edited by azurege, 10 January 2009 - 09:24 PM.

[invinciblegod]

Wait wuh??? I thought you were using standard nokia batteries or something? You know for easy buying. I remember talking about this a while back. Maybe I'm not up to date or something.

Edited by invinciblegod, 10 January 2009 - 09:26 PM.

[(naw)mcx]

Wait wuh??? I thought you were using standard nokia batteries or something? You know for easy buying. I remember talking about this a while back. Maybe I'm not up to date or something.

You might be thinking of using a PSP charger?

[mali]

I hope it is easy to replace the battery, or the spare one I ordered with the Pandora will be pretty useless

To be honest, I have difficulties to imagine a scenario, where you would actually need a spare battery. 8,5h at full load equals around 12h of average use, I suppose.

[Alpha2]

Spare in case you do something to kill the original. Somehow I doubt a spare will last long enough sitting on a shelf to use in that eventuality unless you screw it up on day one.

[marshal]

I you are on a very long flight you might want a second battery. If you have to change planes you can have to wait some good hour at the airport if there can't use your charger you could run into problem.

Also I think the device will be "always on". The nokia internet tablet are... the processor and power management is so efficient that it uses less power to just leave it on for a few hour instead of shutting it down and power it up again.
Now if for some reason you have a process that go crazy and uses 100% cpu for a few hour that could seriously drain your battery.

I am sure most ppl will be more that happy with no spare battery but some ppl want to take no risk or have special needs.

I have to say though the 4 crew thing leave me wondering if you actually need a screwdriver... that really seem like a bit too much. Still I would be surprised if it is really "difficult" to change the pandora's battery. I not really worried about that. And the battery life is going to be pretty awesome.

[Tinnus]

Also I think the device will be "always on". The nokia internet tablet are... the processor and power management is so efficient that it uses less power to just leave it on for a few hour instead of shutting it down and power it up again.
Now if for some reason you have a process that go crazy and uses 100% cpu for a few hour that could seriously drain your battery.

That cannot happen. The device will be put to sleep when closed (unless you run a music player or something that explicitly tells it not to), and to hibernate after too much time sleeping. Which means:
- Sleep: the CPU, screen, speakers etc are turned off but the RAM is kept on to keep things as they were. CPU state is saved to RAM and kept safe. Resuming is almost immediate (this is what happens when you close a DS except for some weird games, and when you "turn off" a PSP without keeping the button held for more than 4 seconds). Since the CPu is halted, no processes or anything are running. This uses very little energy (think lots of days without having to charge, like when you leave your laptop/DS/PSP closed).
- Hibernate: RAM is saved to disk/nand/card (HD in regular desktops and laptops). EVERYTHING is turned off. This uses ZERO energy since everythign is asved to persistent memory. When you turn the device again, it boots as normal but the OS loads faster because the "only" thing it needs to do is load the RAM image from the disk.

[marshal]

Also I think the device will be "always on". The nokia internet tablet are... the processor and power management is so efficient that it uses less power to just leave it on for a few hour instead of shutting it down and power it up again.
Now if for some reason you have a process that go crazy and uses 100% cpu for a few hour that could seriously drain your battery.

That cannot happen. The device will be put to sleep when closed (unless you run a music player or something that explicitly tells it not to), and to hibernate after too much time sleeping. Which means:
- Sleep: the CPU, screen, speakers etc are turned off but the RAM is kept on to keep things as they were. CPU state is saved to RAM and kept safe. Resuming is almost immediate (this is what happens when you close a DS except for some weird games, and when you "turn off" a PSP without keeping the button held for more than 4 seconds). Since the CPu is halted, no processes or anything are running. This uses very little energy (think lots of days without having to charge, like when you leave your laptop/DS/PSP closed).
- Hibernate: RAM is saved to disk/nand/card (HD in regular desktops and laptops). EVERYTHING is turned off. This uses ZERO energy since everythign is asved to persistent memory. When you turn the device again, it boots as normal but the OS loads faster because the "only" thing it needs to do is load the RAM image from the disk.

I was thinking too much of how my Internet tablet works and assumed you would want to keep it always on. What you're saying is perfectly correct of course. Putting the device on standby when closed probably make sense for how most ppl will be using the device.
I sure hope they can get standby / resume time to be really quick. Like less than 5s.
Time in standby should be amazing on a device like the pandora. If it can play music for 100hr, standby time should be a multiple of this. So can't imagine it being less that 1week and wouldn't be surprised of it lasing 2week or more... that's of course pure speculation from my part.

To go back to my Internet tablet, it just doesn't have a standby mode. It's made to be "always on". And because the wireless has both good range and low power usage you can actually have it check you email / refresh your RSS at a frequent interval. I don't have much trouble making it last a whole work day this way.

I have no idea how good to pandora wireless is going to be but if it's good I would expect some people doing the same thing as on my Internet tablet.

Edited by marshal, 10 January 2009 - 11:19 PM.

[mali]

Pandora uses ti1251 Wifi chipset AFAIK, it should be possible to find out its typical power draw.

[Tinnus]

I think it's pretty possible to make the pandora wake up at regular intervals to do specific tasks (say, configurable) since it has an RTC No real knowledge though, just speculation on my part (DON'T BLOG THIS! )

[(naw)mcx]

I think it's pretty possible to make the pandora wake up at regular intervals to do specific tasks (say, configurable) since it has an RTC No real knowledge though, just speculation on my part (DON'T BLOG THIS! )

Awww, so if that is true no alarm type functions?