When I selected the tiny QFNs for the LDO and the MCU, I imagined it would be hell to solder them correctly. I was sooo wrong ! Check this out: Fig. 1: 3.3V LDO: 2x2mm QFN, with thermal pad. Fig. 2: STM32L072KB: 5x5 mm UFQFPN, with thermal pad.You need...