I hereby certify that I am not simply asking someone else to design a footprint for me.
I have just switched to Kicad 6, and am trying to design a really simple PCB. It is just an array of 25x 3mm through hole LEDs (9 blue, 8 red, 8 green) in a 5x5 array, 4mm pitching vertically and horizontally, all connected to a 4w connector (blues in series to pin 1, greens to pin 2, reds to pin 3, common ground on pin 4).
Done the schematic OK, created the necessary footprint (same for all), brought it all into the artwork editor. All OK so far. Created a user defined 4x4mm grid to lay them out. The anchor point of the footprint is in the middle, one pin either side (+/- 0.050").
They snap to the 4x4mm grid OK - or rather, 23 of them do, 2 don’t. The 23 that do all snap correctly to the mid point of the footprint half way between the two pads, the 2 that don’t all snap to the location of pin 1 (0.050" to the left). Yet they all use exactly the same footprint.
Dragging one of the bad ones around, suddenly it started to snap to the mid point correctly. No idea what I did to make this happen, and try as I might, the last one is still stubbornly snapping to pin 1, not the mid point.
Any suggestions as to what I have done?