I'm currently using a Sparkfun 4 Half-Bridge load sensor (50 Kg) with combinator and amplifier both are from the Sparkfun. Link:https://www.sparkfun.com/products/10245 (For Load Sensors)https://www.sparkfun.com/products/13878 (Combinator) https://www.sparkfun.com/products/13879 (HX711) Our application requires long-term use i.e 8 to 10 hours of load application and monitoring the weight change during this time. Is this possible to achieve the above requirement using these chips/amplifiers? As we have experienced a drift in the readings if a weight is placed for more than approx. 3 minutes. We are using 4 half-bridge sensors, a combinator, and an amplifier.The issues I am tackling right now are,
- Zero balance: Load sensor value exponentially increases or decreases after calibration(this is a cyclic thing and keeps happening). The error ranges usually from -20g to +40g.
- Drift in reading: When the load is placed and kept for more than 3 minutes a drift is observed which increases with time and rises up to 50 to 60g. Can you please assist in this matter? have used different libraries. Results are the same.