Thanks for the links. Now I see how it works...I have completely misunderstood FSR.
What I thought was...that this sensor produce a kind of electrical or magnetic field when fixed on the print platform and as the hotend touch the plate, the sensor detect the change in the field without any physical contact...:D something like this [en.wikipedia.org]
So this thing is mechanical and works only with Marlin and it needs extra supports so the mechanic can work and 3 sensors are needed...Hmmm it means a lot of work and more money.
What I thought was...that this sensor produce a kind of electrical or magnetic field when fixed on the print platform and as the hotend touch the plate, the sensor detect the change in the field without any physical contact...:D something like this [en.wikipedia.org]
So this thing is mechanical and works only with Marlin and it needs extra supports so the mechanic can work and 3 sensors are needed...Hmmm it means a lot of work and more money.
