20201228 rC3 Meetup

EventGrid // DC MicroGrid Meetup Day 2

Introductions

• Severin //tiefpunkt: https://wiki.munichmakerlab.de/wiki/DC_Microgrid
• Chewie: playing around with some gear that accumulated. Panels on the house, some EP.. controller. Looking at LibreSolar controllers
  • 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.

• bitsandbytes: interested in how camp solves power
• mc_leeck: interested mostly in motors, but looking at the power side of things as well
• cfr34k: interested in ren. energy, esp. solar power. had built an mppt charger (12V,50W).
  • not really documented, but would build it similar to the LibreSolar MPPT 12V 10A device (see below)
• HeNeArXn: just checking in what has happened

notes from camp: https://altpwr.net/index.php?title=Main_Page#CCCamp_2019

interesting MPTT modules: https://libre.solar/devices/mppt-1210-hus/

DIY Charge Controllers

tiefpunkt found these projects by OpenGreenEnergy:

• https://www.instructables.com/ARDUINO-SOLAR-CHARGE-CONTROLLER-PWM/
• https://www.instructables.com/ARDUINO-SOLAR-CHARGE-CONTROLLER-Version-20/
• https://www.instructables.com/ARDUINO-SOLAR-CHARGE-CONTROLLER-Version-30/

"old" altPwr Team

Benadski and doktorbob

• Old Website was interesting, but seems gone
• Maybe restore it somehow?

DC Power Meters

tiefpunkt talks about GC-90 power meters

• https://github.com/tiefpunkt/gc9x-reader
• https://github.com/makervan/powermeter-lorawan-connector

LiPo Batteries

tiefpunkt shows 7S LiPo board (sort-of matches 24V lead)

MCH2021

Camp in Netherlands - Website - Tickets available

• Do a village or cluster close together so we can test our setups
• Benadski involved in the power grid
• There are plans to power it from the grid: blog post