I have tried the grove EMG detector with a Sparkfun RedBoard Qwiic. It works well and shows me changes in muscle activity. The issue is that the minimum value is somewhere around 290 and the maximum value somewhere around 360. This is a very small range, so the resolution is not very high. I attached a screenshot of the graph.
Is there a possibility for me to change this? I tried it with 3.3 and 5V as input.