VALENTINE
Little known fact. There are 2Ah coin cell batteries, which are already assembled and tabbed, however, they are really uncommon and hard to find. Also, they are non-rechargeable.
Another option would be a cornell-dubilier RJD3555HPPV30M / 500mA battery, which is a 35x6 mm rechargeable battery, that's as exotic as it gets, at an eye-popping nose-bleeding mouth-watering $40/pop... pew pew pew! cornell-dubilier RJD3555HPPV30M / 500mA is rechargeable. I will order couple to check performance. One very important thing, the power reserve is not the same as the Ah rating, as the cornell-dubilier is a different chemistry and has 25% higher power reserve than the panasonic primary cell, so the cornell-dubilier RJD3555HPPV30M / 500mA is equivalent to about 650mAh Panasonic CR cell. Problem is they require real power management which really complicates the circuit and eats up performance. These are very complex solutions, however, since we are going all out, and I don't care about cost, I might go for it. But then the watch will cost probably between $300 and $500 to make, which I don't care. The problem with the rechargeable i the power density is a lot lower than primaries, but then... rechargeable!
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1. yes, but better way is change exist code. Open source code not is optymalise. You create ugly and slow and no power eficient. It is always better to improve the code than to write from scratch.
Just make the watch run and show how many seconds have passed since 1070 ;)
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cornell-dubilier RJD3555HPPV30M / 500mA is rechargeable. I will order couple to check performance. One very important thing, the power reserve is not the same as the Ah rating, as the cornell-dubilier is a different chemistry and has 25% higher power reserve than the panasonic primary cell, so the cornell-dubilier RJD3555HPPV30M / 500mA is equivalent to about 650mAh Panasonic CR cell. Problem is they require real power management which really complicates the circuit and eats up performance. These are very complex solutions, however, since we are going all out, and I don't care about cost, I might go for it. But then the watch will cost probably between $300 and $500 to make, which I don't care.
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when it is fashionable dev I need normal coin power
if it will be emergency I need power form 2 source. rechargable or charge | use AAA as emergency power too.
But I'm not buy this dev because it is not open source
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Haha, when I'm done I will send you one watch for free, just PM me your address. Let's not get too carried away with open source. I'm here to document my progress and educate people, this is as open source as it gets, my dear friend. That's a promise, one watch for free.
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Maybe I don't write English very well. If the clock is to have an appearance then such coin batteries are very good.
If it was to be used in an emergency then any source in the 1-12V range would be good. e.g. a battery from a 1.5V AA flashlight and a step-up down charger / DC/DC Step-Down Power Supply Module.
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The second issue is open source. You can give your own software that is closed and efficient. In addition, you can give open software that is inefficient but open. Then everyone can choose what they use and open software can always be improved.
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Handing over the prototype or finished product is a very good way. Thank you very much for such an idea. However, I think it is worth donating this copy to wire magazine or some hacker (Wozniak, Linus Torwalds etc.) This will certainly be a better way to advertise this good watch. I suggest you would like to do with my dev.
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1. You can load your own code, no one stops you. It's a generic MCU and components, you can write any code. People can choose to run my code or write own code.
2. Not sure those people really care about watches. You realize Wozniak and Torvalds are not hackers anymore, may be they were many, many decades ago.
3. I would rather donate to people like you than Wired (I assume you meant Wired Magazine, not Wire) or anything like that. Fuck Wired. Hell, 4chan/g has better insights than them. You want a hacker magazine, go to 2600.com
Cheers!
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it is recargable? some coin cell was
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