No, I'm sorry if my tone sounded like I was offended, but I was actually quite impressed by those environmental conditions, as they are very different from the ones I live in (here in a hot summer you hit 32ºC rarely).
The thing is, you live in a very harsh environment for battery powered devices. Almost any demanding battery powered device is nowadays powered by a Li-Po battery:
As these allow for higher charge and discharge rates than other types of batteries. My smartphone is powered by those, and so is my notebook. Lithium batteries don't like extreme temperatures (usually outside of the 0-45ºC range) and devices powered by them suffer when working on environments with temperatures over 30ºC:
Charging or discharging a battery produces heat (the higher the rate, the higher the heat), and unfortunately Li-Po cells are dangerous (may explode or catch fire) when exposed to certain conditions (over-discharge, that is, discharging them under their nominal value; overheat, that is, heating them over their max. temp.; puncturing the cell and so on...) to avoid this, consumer grade Li-Po batteries have a small circuit designed to avoid over-discharging the cells (if voltage of a cell drops close to nominal value, the battery outputs 0 volts), avoid overheating the cells (it will not charge over a certain temperature) and some other safety measures.
My point of view is: the Pyra, being a passive cooled (no fan) Li-Po powered device would have a hard time functioning or charging under those conditions, as it would also happen with any modern smartphone I'm afraid (same conditions apply: passive cooled, lithium battery powered)
Clearly I've not been paying enough attention!Indeed, it is.
There's a recent thread discussing the development of hardware configuration applets, which we shall certainly need. Perhaps a convenient way to set the battery temperature limiting would be worth suggesting? The Pandora has a nice GUI slider for CPU clock and voltage - which have a similar potential to break things if you overdo it!
Indeed, it is.
Of course, resistors are user-configurable too, if you have a steady hand and a good soldering iron...
Welcome to west Oz!Thanks for posting about Meekatharra. It was fun doing google street maps on that region.
Ha ha, yeah, not ttoo far down the track from here. Don't know what Gnamma is though? G'day in Amsterdam! hope you're keeping safe!
I think you could use an external charger to charge battery outside Pyra, even you could charge two Pyra batteries at night.I have ac in my home but I don't use it as the cost of electricity is huge here. That's beside the point though. As I said I intend to use the Pyra as a phone. If it goes flat before work in the morning, the action would be to place it on charge and leave it at home for the day, with no ac running un-attended obviously, or take it to work and try to plug it in somewhere like a shed or gen-set, neither of which will be airconditioned.
A Gnamma is a Aborigines Waterhole.
Western Australia looks like a great place to buy a house in the middle of nowhere and do nothing for a lifetime.
I think you could use an external charger to charge battery outside Pyra, even you could charge two Pyra batteries at night.
Fair enough!PD: I like dry climate but not so much hot
Depends what you're into I suppose, and what you call living. I don't embrace modern western urban lifestyles. To me success in that environment seems based on how well you can do pretentiousness. Out here we get a kick out of helping each other out. That's what we do for fun. Today I helped a station owner catch a stray calf. He was grateful, and it was rewarding. To me, that's what I call a great day.
We must wait until Pyra development and sales go "normal", then ED won't be so stressed and he can assess accessories for Pyra which would be other incomes for shop. Of course there must be enough interested users, but that, if occurs, will be when a lot of Pyra have been delivered.That's a fantastic idea! I remember someone asking about one sometime ago, and I think the response was that as most effort was being devoted to pyra dev/improvement, and as such an accessory would be low volume, it's dev would be unlikely.
If, however, a generic option was available (ED ?) that would be great. Failing that, I'm sure we could easily make an open source µc based charger. We could then post the plans here, and people could make their own as needed