like the idea of veroboard inside those junction boxes, rather than everything soldered together...... this way you can take some of it inside to 'play with', whilst the rest is still in the yard.
With reference to post #14, what is the circuit board in the junction box?
You mention that there is a video from December last year, could you please share the link here.
I think the video referred to is the in the first post. The "circuit board" is a stripboard/veroboard/protoboard which is described in post #6. It is a data and power sharing device.
