Pics are good, stories good. I believe Jack is doing all the work, I really do. Are you by chance any relation to Captain H. M. “Howling Mad” Murdock? I’m noticing some familiar traits…
Tell us what really happened. Did Jack get lost in the garden after a big night and took shelter under a solar garden light? :laughing:
Love your stories/builds
I’m not sure what happened to Captain Murdoch after the 80’s… I heard he immigrated somewhere :disguised_face:
Lol - that’s probably closer to the mark…. 
Very nice start FmC, glad that Jack is back on board on this year’s build! That composite stuff is great, I have some in orange, a leftover from a building site. It is a pity you can not get it easy.
:+1: Cool!
Pics are good now, and everything looks like it’s coming together nicely, in spite of Jack’s help! :smiling_imp:
People here are so devilishly clever. Scary sometimes.
Great work, keep Barbie out of the picture or Jack will never finish in time…
Good luck with the build, Jack !
Why use 219As? I’ve never seen those emitters used in a light before. Granted, I’ve only been in the hobby for a couple years. I think they were obsolete by the time I started.
perhaps they were already on hand??
It’s what I had lying about, plus they are renowned for a nice Rosy tint, which Jack is fond of…
Nice progress wee man :+1:
I find it amazing the sheer work that goes into setting up pics of Jack at work as compared to the work going into the project itself. Well done! So well thought out and an incredibly interesting way to go about it! 
What do you mean by setting up pictures of Jack? :person_facepalming:
You know, getting the pics without disturbing his work, tricky doing that. 
Most talented artists do NOT like having their photo taken at work. Disrupts the flow or something, they say.
So you have a 12 Volts Solar panel to charge 4x 3.7 Volts parallel batteries?
Yes, the panel will have higher Voltage when there is no load.
Once you start drawing current (load), the Voltage will drop.
Too much load and the Voltage will be lower than specified.
Maybe i missed it, but i assume you will be using a buck converter to go from 12 Volts to 4.2 Volts?
I’m using these USB step down modules;
Here’s the Panel Specs;
Maximum Power(Pmax): 10W
Maximum Power Current(Imp): 0.56A
Maximum Power Voltage(Vmp):
18.00V
Open Circuit Voltage(Voc):
21.5V
Short Circuit Current(Isc):
0.62A
At only ~10W, it’s not a powerhouse, but should provide adequate charge throughout the course of a day.
Okay, step down from panel to 5 Volts.
And after that? A charging circuit?
That will eat up some power too though…
But it will work.
But i think you only need charging termination.
The current at 10 Watts to 4.2 Volts is only 2+ Amperes.
So there’s no real need to regulate the charging current.
As long as it stops at 4.2 Volts.