Subj : Bluetooth Keyboard To : Ky Moffet From : Barry Martin Date : Mon Aug 26 2024 07:22:00 Hi Ky! > KM> It's a very small battery, that's half the problem. Half the size > KM> of a CF card. > That's one spec I try to check when purchasing something battery- > powered: what is the replacement going to cost, how easy is it to > replace, how long will it last (power the device and lifetime). Um, > throw in an 'etc.' too! KM> Yeah, at the time there weren't better choices. And I KM> specifically got it for the cold tolerance, which proved mostly KM> lacking. And based on what you've said I probably would have gone with that model also: drawback of the expensive battery overriden by the low temperature capability. ...Here's a stupid question: they did put in the correct battery originally? I've done the open the case to see what the battery is thing and replaced by that. Just thinking maybe when assembled they put in a regular battery left over from yesterday's job. > KM> Conversely, had my old smartphone (2013) out yesterday for the > KM> first time in at least two years, and surprise, battery is still > KM> at 57%. > If it was an early Nokia probably would have had 85% charge left! KM> Actually... around here somewhere I have a 1998ish Nokia KM> cellphone, and until a couple years ago it still took and held a KM> charge. Could even see the tower, tho not talk to it. I think around 2018 they removed 2G, so that might have been the reason. > KM> Have to open the compartment (it's a "waterproof" camera so there > KM> is no external access anywhere) and hook it to one of my little > KM> portable battery packs, which are not nearly so cold-intolerant > KM> and last a LOT longer. So it's dangling from the camera and has > KM> to be kept hold of too. Awkward and inconvenient, but works. > Yes, I had semi-thought of the problems maintaining the waterproofing and > attachment. Waterproofing: drill hole in battery cover, pass wire > through, seal. Hold battery holder in place with glue. (Easier said > than done, especially fidling with the battery compartment!) KM> Nowhere near enough room. You open the door and there's NO SPACE, KM> just the USB plug, the SD card, and the battery. Doesn't sound hacker-friendly. > KM> Next camera I got takes AA batteries. > At least they're available pretty much world-wide! KM> Yeah, and over time may cost less. Lithium batteries should provide power down to something like -30øF. ....Well below 0ø anyway: use here in a sensor for a thermometer. (Previous winter regular alkaline batteries shut down when it got too cold, then came back on a couple weeks later when warmed up sufficiently.) > Only/A problem is digital cameras tend to suck all those electrons out > of the battery even when not in use -- maintaining of the real time > clock. Why so inefficient in cameras and a computer can last for around > a decade I don't know. (Seems logical to put a RTC circuit and 2032 > battery in a digital camera.... ) KM> Actually, the clock uses almost nothing. Can run for years, KM> witness my cellphone that hadn't been charged in a year and KM> probably more like 2 or 3 years, and still had 57% and knew the KM> date and time. (If you leave wifi and bluetooth on, tho, even if KM> the phone is powered off they'll drain the battery in 3 days. KM> Apparently keeps seeking even when "powered off".) Which makes sense, but for some reason digital cameras drain their batteries. Looked up a few years ago because of problems with one here. Lots of complaints and no solutions. KM> Those paperwhite screens are like that too. They only use power KM> to change the screen, not to maintain it. I have an ancient Nook KM> that has lost one of its marbles and won't power off, but makes KM> zero difference, because the screen uses nothing to maintain. So KM> it retains power for a year or more, even tho it does have an KM> internal clock. Right - because of that kind of stuff was why it made no sense to me for the digital camera to eat batteries. > KM> It works as a replacement point with some Wacom tablets, but I > KM> think it also needs the original pen-stylus to work. > KM> > KM> Does not work with phone. > Or at least not that brand of string trimmer filament. KM> No, it needs the capacitance from the pen-stylus too. Any brand KM> of string will do, from the articles I've seen on making cheap KM> replacements. I wonder if wrapping the trimmer string around the pen/stylus/probe would be sufficient? ...Was thinking poking the string out the dead pen cartridge (problem #1: would still have some ink inside!), out the other end and wrap around the cartridge. ...Problem #2 is probably not enough space between that assembly and the pen barrel. KM> Now if I could find a pen for the huge Wacom tablet I have that's KM> so old it uses a serial port.... powers on, tho, so I bet it KM> works. BUT the pens are proprietary to a given model, and much KM> harder to come by. Try not to buy stuff that uses proprietary stuff! ¯ ® ¯ BarryMartin3@MyMetronet.NET ® ¯ ® .... Daffynition: Disgust - dis sudden increase in de wind. --- MultiMail/Win32 v0.47 þ wcECHO 4.2 ÷ ILink: The Safe BBS þ Bettendorf, IA --- QScan/PCB v1.20a / 01-0462 * Origin: ILink: CFBBS | cfbbs.no-ip.com | 856-933-7096 (454:1/1) .