Like many others, I have a crazy number of wall warts to drive everything I use at home. Just downstairs I count 28 of the things.
I’ve been thinking of building a little 18650 charge controller, and when googling, come up against all the powerwalls. It’s just sad thinking of putting in solar and a power wall, just to attach 28 likely inefficient wall wart power supplies that are totally dumb and require 8 240v power boards to fit. Half of them are dev devices from overseas (like my odroid XU4) so I have an annoying number of very dodgy AC gender benders as well.
Is there any project or solution or guide I can follow to try build a ‘wall wart replacement’ that uses a small power-wall style power source? I’m just thinking a modular fully computer controlled powerwall that does DC-DC conversion with full monitoring might help.
If it was an open source community project, all the better, as it would probably lead to a range of commercial products after a few years - I’m looking at banggood.com style products to keep entry requirements very low so people can learn about power supply math without burning cash (me).
I’ve seen this
As a side note, if it looks like this:
Input battery output
DC / AC / Solar multiple balanced 18650 cells computer controlled DC up to 24 volts & 6A
It would serve not just as a UPS or battery backup / charger for all the devices,
but could do smart things like turn off high power consuming device (such as file servers) if AC goes down or solar is broken or off for an extended time) or report on devices that are turned off or no longer consuming power.
The same circuit and system could be tiny, to just make a legal low-voltage Raspberry Pi UPS with web interface & notifications, or huge, to use a real powerwall DC output to control eg. 20 DC devices all with different voltage and current requirements.
I’m maybe imagining 20 of these, but also with MQTT output & input, as well as a low power display of v/A.
Anyway, maybe forget the crazy future dreams, if you know of any simple Arduino chips and charge controllers and DC-DC converters that I could buy cheap to help create something semi-modular to share, let me know. Throw me links and I’ll start to solder and copy/paste/mod code and share if I get anywhere.
http://green-plug.co.uk/ (seems defunct?)
Edited post title - BT