I was forced to make a USB based programmer when my Office decided to refresh my Laptop with a new one that does not have a com port. Plunged into making PK2 Lite from blueroomelectronics. Why did i choose this one? Mainly because it was simple to make.
The programmer was assembled in a 8x28 generic board, and it is packed brim. At one point I thought it needs to be ripped apart and go with a bigger board. But it turned out to be a cute little programmer in the end.