Hello, I had a few questions about the sensitivity of the myoware2.0: I wanted to show this to a 5 year old and have them use it to trigger a simple servo motor, but I do not know if they have enough muscle potential to trigger the device, I am looking at the videos online of people using this product and they all seem to flex quite a bit for it to trigger.
That’s mostly because it operates on how quickly the potential changes, flexing hard helps ensure the ‘envelope’ is registered at the beginning of flexion (slower activation can lead to a delay)
It might be a bit more tricky with a child, their skin is a bit fattier until ~7 years old and their muscles will probably be a bit harder to delineate for electrode placement…but it should work 
Post your results here if/when you try it!