I wanted to make a little scale for my jar of coffee beans so I can plot the weight of it over time and note when it is low so I can buy fresh beans.
This script was taken from learn.adafruit and is also available at https://gist.github.com/ladyada/3151375#file-adafruit_mcp3008-py and modified a little to work with the FSR and not the potentiometer in their script.
The breadboard layout looks like this:
(Drawn with the totally fun Fritzing and the Adafruit Fritzing Library)
To load the files in the fritzing-files directory into Fritzing
directly you can open the .fz file, although you’ll be prompted to
convert it to a .fzz file, or you can make the .fzz file
yourself from the files in that directory by going into it and
typing:
zip ../lamescale.fzz *
then opening the resulting lamescale.fzz file in Fritzing. I keep
the files un-zipped in the git repository for version tracking, so
you can get whatever version you want from there.
I don’t know what the license on Adafruit’s script is, but mine follows that. If there isn’t a license on their script, mine is CC By-SA.