With the pads gone on the first donor due rookie maneuvers, we've moved onto the second donor. A Glad button.

Before:

After:

Moved down to 30AWG, used solder flux, and a brand new tip on the iron. The donor is on the operating table connected to a 3.3V eBay regulator, Adafruit 3.3V FTDI UART, and an eBay ST-Link V2.

The ST-Link V2 supplies power as well, but this is good enough for some poking around.