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Everything posted by Mark

  1. @Sidewinder PVO gives you the option of creating a "Parent" System and then depending on how you choose to monitor the inverters you can publish each inverter to a separate child system. The parent then consolidates the data and the children can be view separately. A pain to set up but works well. Regards Mark
  2. DIY Powerwall with 18650 batteries

    One of my friends brother was fiddling with a small PV system with old laptop batteries... don't have technical details so can't comment on what happened but in short... his house (the whole thing) burnt down in November! ... the wife just managed to get out in time. They lost everything! So rather more careful than not... if you watch the HBPW and the other Auzzy guys they all have a battery shed apart from the main house - for good reason.
  3. Panel (Array) ventilation

    String 1: NE facing roof top of "n" String 2: NW facing roof "n's" right leg You will then have the best of both worlds - morning, midday and evening power generation! My 2c Mark
  4. Sonstrall wakes up when the sun hits the panels and switches his PC or starts his PVO feed... he then misses a good few hours power usage and therefore the efficiency is excellent. Easy to do
  5. I have a small temperature experiment starting today... I managed to source some iButtons (temperature only) to measure the temperature at 2 different points on my PV array. Buttons are now installed and I'll give them a few weeks to collect data. Some initial specs: Zinc corrugated roof/Aluminium adjustable frame (tilt = 45deg) 15 min reading intervals Button 1: Bottom - Located inside of the panel frame but NOT on the glass backing (about 150mm from roof) Button 2: Centre - Located inside of the panel frame but NOT on the glass backing (about 400mm from roof) Button 3: Top - Located inside of the panel frame but NOT on the glass backing (about 700mm from roof) The array is 6 x 310w panels long so the buttons are placed in middle of the array. (Panel size = 1800mmx900mm) I should be able to plot the 3x sets of PV readings on a spreadsheet with hopefully weather data as well (maybe only temperature )
  6. Panel (Array) ventilation

    Try this tool (bottom of page) http://www.pveducation.org/pvcdrom/properties-sunlight/solar-radiation-tilted-surface You adjust the location and it tells you your options.
  7. The next phase in my Setup.

    Nice - I was going to get a 12v PSU but they are not cheap... ;( How is your prepaid setup going - I seem to remember you switched from postpaid and I'm almost at that point... what meter did Eskom install? I have an Infini and so am nervous of the feedback tripping the meter.
  8. The next phase in my Setup.

    Hi Paul What is the box bottom left of you setup? Regards Mark
  9. Are your batteries charged... if they are charged the MPPT will limit the power to avoid overcharging. What is the voltage of the battery when the flashing happens?
  10. Can you outline your panel configuration and size, etc ie: How many strings, size (voltage, amps) of panels. Panels per string. Also the model and specs of the MPPT. This will help.
  11. Current Water Affairs.

    Darn it... https://www.timeslive.co.za/news/sci-tech/2018-01-25-deadly-fungus-found-in-the-western-cape/ It likes cool wet conditions as well... no win for CoCT
  12. Wind Turbines

    I want to divert from water a bit (sorry @TTT ) so here goes... @Mike - how is the WIND turbine doing - in use or just there for show(off) purposes...
  13. Desalination Plant

    @Mike is there no way you could rent a spot (barter a spot) with sea water access... ie: a harbour resturant/warehouse, etc. You could then trade some water for the use of the position... run the plant off solar etc as normal? You then just need to move the clean water home? My 2c anyway Mark
  14. Lithium battery test centre

    @Chris Hobson This is good news for Pylontech
  15. Antminers?

    Hi Miners Given the ridiculous increases in price at the moment is the yield from your mining rigs staying constant? Regards M
  16. This looks interesting... I haven't worked through it yet but it may be the start of something that affects all of us... https://t.co/RJVNyjQ0M3
  17. @Mike is around but spends alot of time shovelling all the bitcoin into crates in his garage... He may need to build an extension
  18. Antminers?

    You Miners must be smiling broadly at the moment... R10000 to 90000 in 1 year... http://www.xe.com/currencycharts/?from=XBT&to=ZAR&view=1Y
  19. DB requirements

    Hi @Elbow I went through this on the farm and ended up doing the following... do it big to start with and then have space for later changes...
  20. Cheap electricity supply 100kW

    I'm the same... but I'm not as remote as Uncle Chris
  21. My First attempt

    A BMV 702 or similar battery monitor is all I would add...
  22. Starting a new system from scratch

    Can you share the make model and the cost price... I'm also looking for one? Thanks
  23. Antminers?

    When the space station flies past they will need to watch out for the blinding sun reflection coming from the west coast. Nice Mike!!