Hi Richard A, i am interested in this project, but i think i would not be able to solder smd .....Hi Chloderic,
If you're wondering, I'm using a PIC24EP128GP202 for the MCU.
Considering the 8051 is 8 bits at 25 MIPS, and the PIC24 is 16 bits at 70 MIPS, there should be quite a noticeable difference in processing time, especially for short integration times.
There's plenty of ram for internal averaging and the data rate can be set above 115200 baud.
It may be a month or more before my next update as I'm quite busy with things of higher priority.