I do precision shooting and during training we use a machine that indicates the pressure we apply on the trigger. Since it is super expensive i want to try and build one, i think it's an easy project. My only problem is to find a way to calculate the applied force on the trigger. Which sensor would be the best? I've excluded load cells since they are too big, a FSR is much better because being that thin i can simply glue it on the trigger. My fear is that this kind of sensor isn't accurate enough. I need something that can record an interval of about 5/10 grams and a maximum weight of 600g (~6N).
Thank you in advance