This worked, but if I recall correctly the resistance response wasn’t linear but the EZIO ADC, so this meant that I lost resolution and couldn’t reliably tell the difference between a lightly closed hand and a fist.
n the end, I made my own flex sensors. In a nutshell, each flex sensor was an IR LED, an IR sensitive diode (I think), clear aquarium tubing, scrap wires (black), and heat shrink.
Basically, this was a ghetto fiber optic cable (date gloves back then had fibreoptic sensors that detected finger flex). This worked surprisingly well.