v1: (complete)

Most basic usable version. USB powered, uncentered bubble, not size constrained, no pressure sensor. A setup to test programming. Slapping parts together that were already made for other projects.

v2:

Adding pressure sensing as well as making it battery powered. Desktop bubble v2 is big, bulky but functionally complete. (maybe sans wireless connectivity added later)

v3:

Work on case design, look at power requirements and write a how-to on assembling it. The Desktop Bubble v3 has now a nice case is presentable and desirable.

Next steps:

Stress testing, material selection, prize optimization, Fix problems found along the way, extra features, think of actual use cases.