Been gone for quite some time (surgery, meds, et al) and thought I would share this video I just watched.
It is about a 328p clone from Logic Green. 32Mhz, 12 bit ADC and differential, a DAC, three selectable Vref (1,024, 2.048, 4.096), six pins that can handle 80 mA, and is 99% UNO/Nano compatible. The Micro Pro version is 79 cents US. It also works down to 1.8v @ 32MHz
Not sure how to embed a video.