First post, by Jonas-fr
I recently stumbled upon a nice 486 lugable akin to a Dolch (dedicated topic is yet to come) with a battery dead ST MK48T87B RTC (DS1287 pin compatible if I'm not mistaken). As the whole machine since to be build to be maintainable (not mil spec but pretty close) it's socketed so I intend to replace it.
I looked around and I have the following options :
- buy a compatible RTC replacement and hack it to support an external battery > I'm comfortable with that since I've got the tools and the steady hands to do it
- get a nice GW-1287 from tindie (what a cool project really) > this would be perfect but as I'm located in Europe the shipping cost is killing the deal (about 2 times the price of the item)
Seeing that the GW board shouldn't be too complicated I'm wondering whether an open source hardware replacement exists in order to let anyone with a soldering iron to do its own replacements chips. Don't get me wrong I'd glasdly support the maker of this wonderful project, but I'd rather see my money in his pocket than in the US postal system that rips people off for international shipping.