You have to calibrate your sensor in any case, so just hang various masses from it and record the reading.
Work out a scale factor and offset, following this tutorial: Why Calibrate? | Calibrating Sensors | Adafruit Learning System.
You have to calibrate your sensor in any case, so just hang various masses from it and record the reading.
Work out a scale factor and offset, following this tutorial: Why Calibrate? | Calibrating Sensors | Adafruit Learning System.