diy solar

diy solar

Recent content by flywire

  1. F

    Littokala, what a surprise. Not really though.

    What is the current recommendation for camping a battery in Australia?
  2. F

    Using Old 24V Class House Panel

    Like https://github.com/opensolarproject/OSPController/wiki
  3. F

    Using Old 24V Class House Panel

    Fair point about panel size convenience for layout configuration, particularly with limited mounting area. They'd be 36V class panels, out of spec for this thread. Mppt is only option.
  4. F

    Using Old 24V Class House Panel

    Old house panels are very cheap or ewaste in many areas but they should still be functional for many years. What are your thoughts for the best way to use them? I'll nominate the ReneSola 125 Series 200w panel as the basis of discussion. STC: Pmax 200W Imp 5.41A Vmp 37.1V Isc 5.7A Voc 45.3V...
  5. F

    Multiple channel energy monitor

    https://github.com/rin67630/Soft-Power-MPPT is multichannel
  6. F

    SoftPower: Universal Version for Panels <21W and panels <300W.

    This block diagram explains it from https://github.com/rin67630/Soft-Power-MPPT/blob/main/README.md
  7. F

    SoftPower: Universal Version for Panels <21W and panels <300W.

    Thanks for keeping us updated on the project progress and the explanations. Consider my use case a stress test. I assumed the other side of the planet, so reversed almost all your key assumptions in terms of solar radiation and heat, and assumed efficiency could be sacrificed. The sun still...
  8. F

    SoftPower: Universal Version for Panels <21W and panels <300W.

    Can you explain a few things about the schematic assuming SZBK07 (U6) is used in a high solar input situation? Are U1, U3 and U7 optional? Where is U6 load Gnd? Which Oled pins are used (assume I2C - vcc/gnd/sck/sda)? LM75 temperature sensor for lead acid charging - I2C requires 4wires as above...
  9. F

    Calculate solar size for my deep well pump and other appliances

    ? Frenglish is just as bad as Chinglish!!
  10. F

    LiFePO4 Battery 101

    A 5 minute presentation in 1hr 15mins
  11. F

    More Amps from MPPT OSPController

    This project is basically assembling modules although the Drok power supply needs a hardware tweak (or use another power supply) and the voltage divider needs soldering. Fortunately, the voltage divider is only a few cents worth of resistors so you can practice as much as you like. Once it is...
  12. F

    More Amps from MPPT OSPController

    Yes but I think you would use it for more than that.
  13. F

    An attempt to build a better SCC... next step.

    That'd be https://github.com/rin67630/Soft-Power ?? I realise excessive heat is not an issue you are concerned about but it's good to see you value adaptable design.
  14. F

    An attempt to build a better SCC... next step.

    How about adding support for a fan and temperature control?
  15. F

    An attempt to build a better SCC... next step.

    Yeah, December is a problem. In oz we have to reduce the charge rate because there is so much sun it is too hot!
Back
Top