Fresh hacks every day
[Chris] and [Dom] wanted to build their own battery backup system on the cheap. They were very creative in sourcing the parts, and ended up putting together a battery-backed CCTV system for about eighty bucks. Since short power outages are fairly common in the area this battery backup makes sense. We've seen some pretty gnarly whole-house systems but this is more of a novelty. That's a good … [Read more...]
[Adr990] wants to make sure his Game Boy game saves aren't lost to aging batteries. They're stored in SRAM with a small coin cell inside the cartridge to keep the memory energized when the game is not being played. But if you pull out the battery in order to replace it the data will be lost in the process. It turns out that you can hot-swap the battery without too much effort. As shown in the … [Read more...]
[Photonicinduction] has an impressive battery backup installation that powers his whole house. Unlike a standalone emergency generator which would require you to hook up all of the device you want to run, this setup sits in between the power meter and the breaker box, ready to step in when needed. But get this, he's not just using it as a backup system. It kicks in during the day to run … [Read more...]
[Surferdude] was unhappy with the decreasing life of his aging uninterruptible power supply. He decided to beef it up using marine batteries. He extended the battery connections outside of the UPS case using #10 wire and swapped the two 12 volt gel cells with the heavy duty lead-acid batteries. Doing so upgraded the device from 20 amp-hours to 84 amp-hours at a cost of about $160. If you're … [Read more...]
Looks like they're at it again over at Adafruit. This time they've produced a clock that looks more like it should be attached to a munition rather than cruising bedside. But, geek-cred aside, there's a lot to be learned from their design. Like we've grown to expect, they've put together some good documentation on their choice of components. Start off by taking a peek at their 5v power … [Read more...]
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