Release status: experimental [box doku]
|Description||self-sustainable power grid|
We wanted to build a DC microgrid at CCCamp19, but never fully got around to it. So we'll keep on trying in our lab, for the next camp and other events.
Gear we have built so far
- Forty Eight Grid
- Team Forty Eight
List of recommended devices
- Soldering Irons
- TS100 
- Lab PSU
- DIY PSU using DPS30xx or DPS50xx modules
- Battery Chargers
- IMAX B6 Charger works for LiPo and Pb batteries
- Laptop chargers
- Networking Hardware
- WiFi APs
Power Out Boxes
- DC sockets
- Car sockets
- Switches + Fuses
- What kind of fuse?
- Volt/Amp Measurment - "Battery computer" -> Stats via LoRaWAN?
USB Charging Station
Power In Boxes
12/24V -> 48V
- Schottky Diode
- Fuse / Currentlimiting
- Batterymonitor / Datalogging -> LoRaWAN?
- Auto-Disable with Under/Overvoltage
https://www.aliexpress.com/item/32990834620.html https://www.aliexpress.com/item/32864994942.html https://www.aliexpress.com/item/32993234025.html https://www.aliexpress.com/item/32616324201.html https://www.aliexpress.com/item/32957814319.html https://www.aliexpress.com/item/32904528079.html https://www.aliexpress.com/item/32784107301.html
Biolite has a "base station" with a battery and connected lights to it (Core77 blog post). We could build a similar station and connect other stuff to it.
- Connection between lights via some common cable we all have - RJ45? passive PoE? To remain compatible with a bunch of other gear out there...
- GoalZero also has similar lights for their PowerPacks, like this one
Grid Connection Units
Units with µCs controlling direction, depending on the voltage in the local nanogrid and the microgrid.
- Can be direct (w/o DC-DC-Converters) or with voltage adjustment
- One-to-one connection via 230V?
Severin started working on this for the "Design for a Cause" 2021 contest over at Element14:
DC microgrid project at SHA2017, 42V grid voltage
- Old website (via Internet Archive)
- https://hackaday.com/2017/09/08/that-decentralised-low-voltage-local-dc-power-grid-how-did-it-do/ -> (If interested in helping contact Hackerspace Revspace in Den Haag, the Netherlands: Ralph Willekes <benadski(at)gmail.com>)
"Independent Solar Energy Mesh System" - Solar power solution for community mesh networks, e.g. Freifunk
- Universal Battery Project
- ESP32 MPPT Tracker
- DIY All in One Solar Power Pack
- DIY Off-Grid Solar System V2.0 (previous version)
- "Autonomous Cell"
- Micro Grids
- Building DC Energy systems (by LibreSolar)
- Notes from meetings at CCCamp19
- Notes on Solar and DC grid setups at totalism.org