iomax / ospcontroller

ESP32 Smart Solar Charger - the Open Solar Project

OSP Controller ☀️🕹 now on discord

DC -> DC -> DC Solar. With a single used solar panel, a few used batteries, and $40 in parts you can power your life, transportation and all. Add an ESP32 Arduino to a 95% efficient DC-DC buck converter controlled over serial and you get an internet-connected, privately hosted smart solar MPPT power system. Parts list. Instructions. About. Go build one! (And reach out! I'm happy to help)

A dashboard view Grafana (optional). More details & options here

This solar controller:

• Costs less than $35 in total parts
• Works with 12 - 82VDC Solar Panels, (enabling big and efficient strings of panels!)
• Works with 4.2 - 60VDC batteries. Directly charge your high-voltage eBike batteries!
• Is open source, modify it as you wish!
• Connects to your MQTT smart home
• Lets you own your own data
• Gives you graphs and charts about your system from anywhere

But really, head over to the wiki for

• Background & About
• Part 1:Parts
• Part 2:Hardware
• Part 3:Software
• Part 4:Data
• Part 5:Wiring

Also join the Discord Channel

It's the discussion board to talk shop, get ideas, get help, triage issues, and share success! discord.gg/MRQvKR