Bountyhunter50 Posted October 5, 2014 Share Posted October 5, 2014 Hey all! Ok so I've come up with a crazy contraption concept that I'm getting ready to try and solder together. Wanted to colaboate with you all. I'm not sure if this exists: But I'm wanting to make a tiny little circuit the size of ones Thumb that basically enables constant circuit from a USB Pineapple Juice, then when you get home and notice your Pineapple Juice is almost dead, plug in the Mark V wall adapter and flip a switch to switch from USB Battery to the Wall AC outlet. Basically a constant flow from ether a DC or AC power source to have your Pineapple. I know it's intense voltage regulation, but I wanted to post this into the wild and see if anyone experienced can chime in on if this is completely doable or I'm just a dope and shouldn't bother. Quote Link to comment Share on other sites More sharing options...
barry99705 Posted October 6, 2014 Share Posted October 6, 2014 Basically you want a ups for the pineapple. Like this? http://hackaday.com/2014/10/04/supercapacitors-for-the-raspberry-pi/ Quote Link to comment Share on other sites More sharing options...
Bountyhunter50 Posted October 6, 2014 Author Share Posted October 6, 2014 Sort of. I do like the concept of the capacitors to help regulate voltage. Imagine that with two inlets to handle the dc barrel, and the single out barrel to go to the pineapple. Quote Link to comment Share on other sites More sharing options...
barry99705 Posted October 6, 2014 Share Posted October 6, 2014 The caps are the "battery". They keep it running long enough to shutdown properly. I've seen people swap out their car battery for a couple large supercaps. For your case they could keep the pineapple running long enough to swap batteries, or go to mains power. Quote Link to comment Share on other sites More sharing options...
Bountyhunter50 Posted October 6, 2014 Author Share Posted October 6, 2014 I guess I was overthinking. I wouldnt need to regulate the output right? Im not sure on that pcb you sent the link for has the dc barrels or a solderable socket. Im sure I can reverse it either way ;) Quote Link to comment Share on other sites More sharing options...
Bountyhunter50 Posted October 7, 2014 Author Share Posted October 7, 2014 I found the schematic on it. Study time! Quote Link to comment Share on other sites More sharing options...
barry99705 Posted October 7, 2014 Share Posted October 7, 2014 It's probably not exactly what you need, but it gives you a place to start. Quote Link to comment Share on other sites More sharing options...
fringes Posted October 7, 2014 Share Posted October 7, 2014 Would a "Y" adapter (something like: http://www.sweetwater.com/store/detail/PPAV) let you switch from battery to wall power and back without rebooting your pineapple? Quote Link to comment Share on other sites More sharing options...
barry99705 Posted October 7, 2014 Share Posted October 7, 2014 Would a "Y" adapter (something like: http://www.sweetwater.com/store/detail/PPAV) let you switch from battery to wall power and back without rebooting your pineapple? Should work. I'd pull the battery pretty quick though. It will try to back charge which won't be good for it. Quote Link to comment Share on other sites More sharing options...
Bountyhunter50 Posted October 7, 2014 Author Share Posted October 7, 2014 that's what I'm wanting to avoid: Any unneeded damage to the battery, or the Pineapple. Quote Link to comment Share on other sites More sharing options...
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