That’s actually pretty good. Simple and effective, and the thought never struck me.

Totally in the spirit.

That is actually really clever, simple and does what it needs to. This is the sort of thing that makes a lot of sense on HaD.

P.S.
Why would you use duct tape for electrical work?

So obvious that it hurts because it is right in front of your nose!

this is 1 of those things that is like so obvious yet i’ve never thought to do it
somone submit to thereifixedit!!!
btw, needs aluminum foil contacts for ultimate kludge-factor

23A For lighting, wrist watch tiny cells in series !!?! Is he aware of ~ 33 mAh and huge internal resistance? I just cant think of even worse choice of batteries. I have semiconductor tester that runs on 23A, it pull just couple mA when in use and its enough to create frustration of replacing them frequently, and they so overpriced, I hate them so much and add external supply in the end.

love it.

This is just batteries in a tin, what is hackaday thinking, i sent them a unique way to use a cheap off the shelf device to switch on/off power plugs.
from any where in the world, even the OS is ran on was self coded in full asm.
But they could not even give us a email acknowledgement :( .

@Dex

That does indeed suck. Like the above comment, a link would be appreciated.

@xyz
If its such a “common technique”, show me a link to to the same technique.

ps: i did not want to spam, thats why i did not post a link.

My guess is that using a smaller switch, it may be possible to fit 2 pairs (4 batteries), and use the switch to select the pair you want to use. :)

With a 3 position switch, you can turn it off too, if that it’s really needed.

whats he using this tin for ?

Hackaday you need to accept more submissions like this, your site is awfully dry sometimes.. what with all this nokia push BS! virtual graffiti sucks. so does skating/boarding, alot of us dont see the light of day.

at least put them in a basic hacks category

solder the batteries together and dispose of when done ;)

you can easily convert the PSP to USB charging, and then make your own USB charger-in-an-Altoids-tin

another useful kludge used by myself and others is to swipe a piece or three of the special nickel coated conductive foam from a dead lcd panel.
this is good enough for low drain applications and reliable with multiple uses.

i have used this and it works well (even charged a li-ion camera cell when the original charger had sprouted legs) :)

@therian
About the A23′s, yeah they are expensive and low amperage andsoforth BUT they are the only tiny thing that gives off 12 volts, and to get that with 1.2/1.5v batteries takes upto 10 of them and then you might as well get a motor/scooter battery since you’re lugging around several pounds anyway and it’s no longer suited for the pocket.

…or you could use polymorph to make the whole enclosure. (Take a look at some of the projects in that site. Polymorph is awesome!)