Grip strength can be used as a measure of overtraining.
There are ADC + strain gauge meters on ebay for hobby bodyweight scales (HX711) that should be good for measuring up to around 200kgs. I ordered one and plan to put the gauges between a pair of half cylinders of wood to measure grip strength.
The HX711 can communicate with microcontrollers with a 2 wire interface like I2C. I’ve gotten this working with the Nucleo and tested it by having the Nucleo output a sin wave and reading the voltage that the HX711 measured.
project stuff here, remember that all the Nucleo stuff is compiled using the mbed compiler
