YouTube User [Vuaeco] has come up with a novel idea, combining power tool battery packs to double the capacity.
Starting off with two slimline 2.0Ah compact battery packs, [Vuaeco] wanted a larger 4.0Ah rebuilt drill battery pack. These battery packs are different in size so it wasn’t just a case of adding in more cells in empty slots, instead he goes on to show us how to connect the batteries in parallel using some thin nickel strips. Once completed he modifies the battery casing so it fits another stack of batteries. He does this by bolting the top and bottom together with long screws, and insulating the otherwise exposed battery terminals with insulating tape. The final product isn’t as aesthetically pleasing as a real battery pack, but it looks good enough.
There are a few things we might have done differently, for instance providing some hard plastic around the insulation so should the battery get knocked in an awkward position it would still have a hard shell protecting it. Also, instead of combining the batteries together fully charged as the video suggests, we might have done the opposite approach and fully drained them, avoiding unnecessary risks. If you try this, how about giving it a 3D printed case?
Continue reading “Doubling The Capacity of Power Tool Batteries”
There are exactly two types of personal computers available today. If you need a lot of horsepower, a powerful GPU, or a full-power CPU, you’re going to end up with a desktop. If you need something portable, you’re getting a laptop with a wimpy CPU and an underpowered GPU. Historically, there has been a third type of PC, the luggable. The luggable is a desktop PC crammed into a case that makes it slightly more portable than a desktop and a monitor. You cannot buy a luggable PC case right now. They simply do not exist as a commercial product you can shove your own hardware into. This is a form factor an entire industry forgot.
Now there’s a DIY luggable PC. This project from [Roger] packs a standard ATX motherboard, a full-size GPU, a full-size power supply, and everything else that makes a desktop PC powerful into a case that can be stored in an overhead bin.
[Roger] has been working on this project for a while, and it was featured on Hackaday back when it looked like a RepRap Mendel. There have been some significant improvements over the earlier iterations of this project, including a very, very cool hinge mechanism that allows the display to fold in when the computer isn’t being used. It’s a mechanical wonder that prevents scratches. Neat. The rest of the case is constructed out of 2020 aluminum extrusion, and about a one kilogram spool of filament.
Since this is a portable case, there are a few compromises. There are no 5.25″ bays, no 3.5″ bays, and few 2.5″ bays. M.2 SSDs and USB-powered CD drives exist, so this isn’t a big deal.
This is a truly fantastic case in a form factor you can’t buy anywhere else. If you have a spare monitor and a bit of extrusion sitting around, this is one to build yourself.
It’s not often that you find a Macintosh dumped out on the side of the road. [GrandpaSquarepants] was one of the lucky individuals that did. Being the good friend that he is, he made his roomy carry the 50 lb behemoth back to their apartment. Not surprisingly, the machine didn’t boot up and ended up sitting around the apartment for a few years.
Fast forward from 2012 to present day and [G.S.] decided it was time to do something with that G5. That “something” wasn’t about fixing it. Instead, it was gutted to turn it into a Macintosh-cased Hackintosh. If you’re unfamiliar with Hackintosh, it’s a term used to describe a project that gets Mac OS to run on non-Apple hardware.
[G.S.] could have just crammed everything into the G5 case and called it a day but he decided to spend the time to make it look supremely presentable. The case was significantly modified to fit the non-Apple computer components, including the addition of a custom rear panel made from aluminum to mount the power supply, cooling fan and to allow access to the motherboard connectors. Take a close look; there are two CPU coolers in there. It was such a close fit that there is only 2.6mm (.1 inch) of clearance between the cooler and the case.
Two Dell U2415 monitors and an Apple wireless keyboard and mouse make up the rest of the setup. Overall, [G.S.] is happy with the final outcome of his project, well… except for the Apple mouse. He says that has got to go!
3D holographic fog display
Some researchers in Japan are hard at work building a 3D volumetric fog display that would allow you to live out some of your Leia-related Star Wars fantasies. Using a column of fog and three projectors, they were able to create a display that looks three-dimensional from any angle. It might be a while before the technology hits your living room, so don’t clear your calendar just yet, Obi Wan. [via Neatorama]
The Claw – a three-fingered robotic gripper
Instructables user [AntMan] has been hard at work revising his robotic claw gripping mechanism. Laser cut from wood, this servo-driven claw can easily grasp small objects with little effort. We can’t wait to see someone build a version from milled aluminum!
Ben Heck’s retro Xbox 360
[Ben Heck] is at it again, and has recently given the Xbox 360 a sweet retro makeover. Taking inspiration from gaming consoles of the 70’s, he converted an Xbox 360 into a laptop-style portable (again), but this time with the look and feel of an old Atari 2600. Retro gamers rejoice, you can now get your Xbox on while enjoying the sweet simulated wood-grain you grew up with.
Rocket-based ice fishing notification system
What fun is ice fishing if you have to sit outside freezing your butt off? We’re assuming that was the driving thought behind [Mike’s] rocket-based ice fishing rig. A model rocket is attached to his fishing sledge, which is triggered when a fish is detected on the line. Using a low-tech detonator, the rocket lets him know it’s time to check the lines. Now only if we could get the fish to fillet themselves…
Case modding video series hits the web
The “Mod Men” is a fairly new web series that takes you out of the basement and into the garage for some professionally constructed case mods. Described as “American Chopper for geeks with a dash of This Old House”, the creators aim to showcase over-the-top case mods with a professional flair. They already have three episodes under their belt, all of which are available on their site.
Case mods aren’t usually enough to make Hack-A-Day, but we all drooled a bit when the Dark Blade started back in 2004. Now, it’s finally finished. Everything on the case was custom machined just for this project. I cropped the base for the shot – check out the full pics in this thread. Thanks to [Jake] for the tip.