DIY Battery-less USB powered mod/510 cable?

[Cespian]

Righto - So, I needed a new project, since the Rapsberry Pi RC robot is frustrating me... and while I was thinking, I swear I heard my Noisy Cricket tell me "Hey brah, psst... ya, its me... why dont you build a battery-less mod powered by USB". Immediately, I whipped out a few bookmarks I had saved on USB specs etc.

So I know that I can acquire 5V and roughly 500mAh from my PC's USB 2.0 port (possibly 5 to 10 watts?). However, if I use one of the wall adapters, I can bump that up to 2000mAh (and somewhere around 25watts?).

The idea is to have the cable, interupted with a switch to fire, a poly fuse or 2 (just in case the wall adapter decides to go ANC on me) and ended off with a re-inforced 510 connector (Currently have 5 on a ship to SA because I am building a parallel mech also).

Why do I want to do this? Because I am crazy obviously, and bored with my mundane life, and movie nights will be pleasant because its constant and efficient power whole time, everytime.

So, I'm no electrical guru. I know a bit of elec laws and skilled enough with a soldering iron. What are your views on the plausibility (and risks/benefits) of such a creation.

 

[kimbo]

@Cespian my electrical knowledge is not so great but why cant you use capacitors?
use the usb to charge them and just get something to regulate the release of power from them (i am not sure if that can be done)
Have something to show you the charge on the caps, you will not need the long lasting charge of batteries because it will always be pluged in
do you get a big enough cap for a decent vape?

 

[Cespian]

Good to know! Obviously, I know absolutely zip about these things, but wouldn't you still need a battery of sort for current dispensation purposes? Like a motherboard?

Nope, if I can get an adequate DC power supply... no battery required. Thats what the whole investigation is about... finding an alternative to batteries (a simple wired solution for when I am in a fixed position - i.e. sitting at PC or movie nights etc). I am now basically looking for an AC to DC adapter that steps down the current and voltage to provide the same as an 18650 mech would. SNT has what I need (called a few minutes ago) but going to wait for the 510's first

 

[Cespian]

@Cespian my electrical knowledge is not so great but why cant you use capacitors?
use the usb to charge them and just get something to regulate the release of power from them (i am not sure if that can be done)
Have something to show you the charge on the caps, you will not need the long lasting charge of batteries because it will always be pluged in
do you get a big enough cap for a decent vape?

I see what you're getting at... a capacitor basically stores electrical charge if memory serves me correctly (therefore, kinda a battery, but not a battery). I suppose the difficulty will be releasing that charge effeciently (possibly inline with a couple of resisters) and constantly (must be DC as I'm scared of Alternating Current) but then I will be building a complex circuit lol. Even so, a capacitor will loose its charge if used excessively (depending on how many conductors I set up), and I could end up building an electrocution mechanism.

Great idea though, will definitely read into it.

 

[WARMACHINE]

I have 2 kids, but they sleep at 20:00... need something to keep me occupied between then and 1am when I usually sleep.

thats exactly my point of using a the wall adapters instead of PC supplied power. 10 watts is too little... 20 for the least

It's called a PS4......

 

[Christos]

It's called a PS4......

The kids would be overjoyed

 

[Cespian]

It's called a PS4......

I'm still stuck playing Megaman Network Battle, Advance Wars, Final Fantasy Tactics etc on Gameboy (running emulator on my phone)... and then the odd catchup with Age of Empires, Starcraft (1), Warcraft 3 and Command and Conquer on the PC... I'm a reverse hipster, excessively enjoy things after they are cool lol (or I'm stuck in the good ol' days)