On Thu, 8 Aug 2019 18:17:05 +0100, alan_m
wrote:

On 08/08/2019 14:50, T i m wrote:

Or is the output of the little eBay strain gauge amps already serial
so if it was a 24 bit device (16777216) it would be resolving down to
~1/3000 of a g (mathematically at least) and so would just use the
Arduino to turn it into ASCII over a USB interface (no ADC needed)?

If you find the data sheet for the device you may find that the lower
bits are effectively noise and you need to be averaging multiple readings.

Agreed.

I think there can be some of that already going on in the chips plus
we can also do it in software.

Take several readings. Are they all within a reasonable percentage of
each other, if yes, assume that reading etc. ;-)

Cheers, T i m