Recent content by sun walker

Has anyone tried these? Do they work? I have a 15 degree roof, but even my near vertical pv's get dust buildup, then lichen takes a hold.

Hi Warpspeed These came today, slowly getting there. What are the Mosfet's spec? & what is the diode spec? thanks

Headlines over the last few days, the world is awash in it. Thailand unearths huge lithium deposits China discovers 1-million-ton lithium mine, largest in Asia China Could Control a Third of The World's Lithium by 2025

Ok, thanks for your patience, I'll just post the 1st corrections below & work with your suggestions tomorrow. I'll replace the older version to avoid anyone using it.

Glad you picked that error up, I can't believe how I missed it, good thing my 1st Pcb was a miss. "But what is D2 ?" Won't I need a Blocking Diode? (To stop the battery discharging through the pv's at night).

So I'm onto my 2nd pcb, (seems better to lay out the tracks by hand, less error). But I'm not sure where to end the "large tracks". I have used <<<<>>> on the image below to denote large tracks. Do I need more large tracks, such as the Battery track? or more from the bucks or Earth? Thanks

Amazon outside of the states is too expensive re postage. So Ali is my cheapest option, most of the brands mentioned above aren't available there. Having spent loads of time seeking teardowns reviews on utube, Below are the most recommended brands I found, all others on Ali seem utter junk...

kinda unrelated, but how good are these electric sit on mowers? I know Ryobi is a cheap brand but <3 years of battery life seems a bit poor. I have a large area to mow, looking at sit on (prefer robotic), seems like a no brainer to upgrade to an electric, any recommendations?

Hi, just wondering if I need a diode for each string, between the (Battery or) Mppt & panels? I can see one on the (external part of the) circuit diagram, but not sure of its purpose.

Just starting to explore buying some batteries, cheapest for me would be alibaba. I can't match any of the brands Dave listed from amaz. Daweikala lifepo... AU$48.59 AU$52.82-8% Extra 8% off with coins New 12V 20Ah 50Ah 100Ah 150Ah 200Ah LiFePo4 Battery Pack Lithium Iron Phosphate Batteries...

Got deleted with the resistors, it should be right now. Thanks

I've updated the schematic (edit corrections). Should I add any pins for easy testing on the IC or any of the circuits?

great, thanks for that.

MPPT ANALOGUE ~1KW Warpspeed That's the search tittle of the file on easyeda.. After many nights, I have (maybe)finished the 1st stage 3 more to go, (probably take as long, good learning process). http://www.evankrall.com/posts/jlcpcb-smt/ Design your schematic. X Lay out your PCB. Fill out...

Hi, Just before I order the chokes, would I be better getting the 500UH/20A, wire diameter 1.4mm*2, rather than the 300UH/25A, wire diameter 1.6mm*2? Same shop similar cost. Higher Amps or higher uH?