Step down close

This shows the little scrap of strip board with the step down circuit. Strip board has strips of copper that connect rows of holes on the back of the board. Here they are running east to west across the view underneath.

If you are keen, you just look up the datasheet for the XC6202 and the schematic for a similar cicuit is on there. You then figure out how to wire that on whatever media you have. Or even solder up all the components as a free standing unit. I haven't tried that much as I am using second hand parts with very short wires on. I am advancing a little as I have learnt the virtue of things like detachable connections. I used a three pin connector for the little chip, so that I can try a couple of different units that have similar requirements.