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| − | == First Meeting - Day 2 (2020-12-28) ==
| + | Two meetups - thanks for Chewie and tiefpunkt for organizing |
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| − | [https://rc3.world/rc3/event/eventgrid-dc-micro-grid-meetup/ EventGrid // DC MicroGrid Meetup Day 2] | + | * [[20201228_rC3_Meetup|First Meeting - Day 2 (2020-12-28)]] |
| | + | * [[20201229_rC3_Meetup|Second Meeting - Day 3 (2020-12-29)]] |
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| − | * Severin //tiefpunkt: https://wiki.munichmakerlab.de/wiki/DC_Microgrid
| + | [[Category:Events]] |
| − | * Chewie: playing around with some gear that accumulated. Panels on the house, some EP.. controller. Looking at LibreSolar controllers
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| − | Charge Controller - https://www.western.it/en/products/wrm15-dual-battery/ - looks good, but android app is useless, and their support is not helpful in fixing the problem. comments in the Italian play store also say it doesn't work, and has a poor rating.
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| − | * bitsandbytes: interested in how camp solves power
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| − | * mc_leeck: interested mostly in motors, but looking at the power side of things as well
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| − | * cfr34k: interested in ren. energy, esp. solar power. had built an mppt charger (12V,50W).
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| − | ** not really documented, but would build it similar to the LibreSolar MPPT 12V 10A device (see below)
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| − | * HeNeArXn: just checking in what has happened
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| − | notes from camp:
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| − | https://altpwr.net/index.php?title=Main_Page#CCCamp_2019
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| − | interesting MPTT modules: https://libre.solar/devices/mppt-1210-hus/
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| − | Projects by OpenGreenEnergy:
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| − | https://www.instructables.com/ARDUINO-SOLAR-CHARGE-CONTROLLER-PWM/
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| − | https://www.instructables.com/ARDUINO-SOLAR-CHARGE-CONTROLLER-Version-20/
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| − | https://www.instructables.com/ARDUINO-SOLAR-CHARGE-CONTROLLER-Version-30/
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| − | [[User:Benadski|Benadski]] and doktorbob | |
| − | * Old Website was interesting, but seems gone
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| − | *
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| − | tiefpunkt talks about GC-90 power meters
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| − | https://github.com/tiefpunkt/gc9x-reader
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| − | https://github.com/makervan/powermeter-lorawan-connector
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| − | shows 7S LiPo board (sort-of matches 24V lead)
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| − | === [https://mch2021.org/ MCH 2021] ===
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| − | * Do a village or cluster close together so we can test our setups
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| − | * [[User:Benadski|Benadski]] involved in the power grid
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| − | == Second Meeting - Day 3 (2020-12-29) ==
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| − | [https://rc3.world/rc3/event/eventgrid-dc-micro-grid-meetup-day-3/ EventGrid // DC MicroGrid Meetup Day 3]
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| − | * Martin: Libre Solar
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| − | ** DC Grid for Rural electrification
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| − | -> today: tiny home systems, >=50W, usually proprietary
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| − | -> Interconnect those systems?
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| − | * Test run in UK, w/ 4 participants
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| − | * Project planned in Ruanda
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| − | * Some of the developments are supposed to go back into Libre Solar
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| − | * Solar charger 12V/24V, grid 48V
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| − | * Working on new version of the [https://github.com/LibreSolar/mppt-2420-hc 20A controller], potentially available ready built then. ETA maybe Jan/Feb 2021 - Martin will post costs in Telegram channel if anyone would like to order one. The more orders, the cheaper it will be, although there is no minimum order.
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| − | Plans for a bigger charge controller (120V input) for wind generators (https://windempowerment.com/) -> Send a message to Martin if you want to be involved
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| − | * Has some 400WH second-hand e-scooter batteries he wants to use but has not had time yet.
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| − | hk: modular battery based on 18650s in euroboxes, with DC-DC charge controllers for each box. Has a lot of 18650 batteries for use in a battery system.
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| − | DC-DC usually one low-voltage side, one high-voltage side, so it's easer to have a 48V grid with a 24V battery. Adapting a 48V battery to a 48V grid is much harder.
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| − | DC-DC-Converter by Zoe and Elen
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| − | https://fully.automated.ee/raccoon.html
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| − | https://twitter.com/tachiniererin/status/1343955837258248192
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| − | [https://festivalgrid.org/ Festival Grid] - Power metering using tasmota-compatible smart home devices. Might be also possible for 48VDC
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| − | Old AltPwr Website
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| − | * http://altpwr-archive.tiefpunkt.com/user-information/
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| − | * https://github.com/tiefpunkt/altpwr.net-archive
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| − | Monthly/bimonthly meetings to prep for MCH
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| − | * Make a list of stuff people can bring
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| − | * tiefpunkt will set something up and post it in the telegram group
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| − | Open source DC-DC converter for "small" power sources
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| − | Portable power-mesh nodes
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| − | * based on hk's battery modules
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| − | * Goal Zero Yeti do some "meshing" which is more a daisy chaining, but isn't very efficient. The systems do communication between each other, probably via the charging cable.
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| − | Jeremail: Has a small setup with multiple dc-dc-converters
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| − | Could e-bike batteries be used so that an entirely new battery system does not need to be created and the focus can be on connectivity and DC-DC converters/chargers etc?
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| − | Bought a few hundred bosch lawnmower 9s2p battery packs, and have no BMS!
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| − | ecki: done own BMS, started PWM DC-DC Controller, using same TI chip as libre.solar, slightly smaller in terms of power.
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