JLCPCB Prototype for $2(Any Color): https://jlcpcb.com
Soldering in the final component - a P6KE33CA. Smothering the PWM5 solar charge controller in UV glue. Attaching the various connectors and taking the finished unit outside to charge one of the 12V Trojan batteries on my powerwall.
Soldering in the final component - a P6KE33CA. Smothering the PWM5 solar charge controller in UV glue. Attaching the various connectors and taking the finished unit outside to charge one of the 12V Trojan batteries on my powerwall.
That’s brilliant
I have tried semi permanent nail polish that cures also with uv. It worked well but I have not tried leaving it in weather. Go to poundland and find some cheap ones to try out
I would have thought that encasing it in a molding of Epoxy resin and and associated hardner should do the trick.
“…oh bubbles ;)”. Sounding more like bigclive
Can i get a board?
If I'm reading the crimps correctly the original selection from the left of the box was sc16-8 which is for 16mm^2 (cross sectional area) cable with an 8mm bolt hole. the one used was 6-8 which is probably for 6mm^2 cable (8mm bolt hole). Looking at the crimp tool markings, it is meant for uninsulated crimps for 0.75, 1.5, 2.5, 4, 6 & 10mm^2 CSA wire. Selecting the crimp terminal to suit the wire is the recipe for success (caveat: when the wrong one is all you have on hand I guess you have to go with what you've got 🙂 ).
As an obvious probably sarcastic comment, the clue on the crimp lugs is 6 – 8. So 6mm cable and a 6mm crimp tool.
Yeah, amazing how the glue bonded to the mat, who'd have thought?
Hey Jules… grab yourself a nail bar UV light. Has a timer and you can just pop your UV glued bits under it for a far more thorough exposure. I find that glue can't tolerate any shadow/missed bits for obvious reasons and I never was really pleased with just a torch or laser. That said, this seems a bit of a faf… I would pot these for peace of mind. You can even 3D print (+DCM rinse) your potting boxes for a precise fit. I use UV epoxy for sealing wire holes etc. to stop the potting compound leaking out (it finds every gap)
I'm glad I'm not the only one that uses Inertia method of removing components.
How well does the glue conduct heat? If not very well, the components will be running hotter than normal.
It would be interesting to see if potting one of the PWM boards in 2-part epoxy from from pound shop would make it fair better or worse in the weather.
Hi julian is the cable you use tri rated at 11 amp 0.5
Any plans of a higher amperage controller in the future? Maybe 50a mppt? I thought about just using a large buck converter, and a cheap on/off controller, no mppt, but it can use higher voltage panels! Not the best idea I know,
Some kapton tape on the mosfet should be plenty of insulation? Or a couple layers?