I changed the LED layout algorithm to allow us to set a number of LEDs for each row. To improve regularity, the algorithm only takes the bottom row’s number of LEDs, and the row above this has one less LED, and so on. There’s also a “margin” setting for the space between the outermost LEDs and the triangle’s edges.
Here are all the layouts I generated, printed on paper with a 1:1 scale, and a 5 cents coin for scale.
We’d appreciate your feedback on this: which variant is your favourite ? You can click on the images to display them in their full size.