The ERAE Touch is a very sensitive controller. The temperature, and the movement might slightly change the shape of the silicon surface and the way it triggers the sensors. If you travel with your ERAE, you might have to calibrate it to avoid too much imbalance between the sensors. Like you’ll tune a guitar or any other instrument before playing. You might not need the calibration every time but it could be a useful tool to make sure it respond the way you want.

There are three modes of calibration depending on your need. 

1) Stuck note calibration

If a sensor keeps being triggered without touching any part of the ERAE just press Alt and + simultaneously. It will signal your ERAE that you are not touching it, and therefore understand its need to calibrate.

2) Simple False positive debug

The first one is a very simple false positive, if you touch the surface then click on the Menu and '+' button simultaneously, you will see the last place where the ERAE was triggered. So if you see that an area is triggered although it was not by you, just go to this calibration mode (Home and +) and double tap on where it was triggered. The first tap is to select the point you want to calibrate, you can see that it turns red, and the second tap will confirm the correction of the sensors.

3) Scrub calibration

By pressing the '+' and '-' button simultaneously you can access the scrubbing calibration : All the led will turn white, now scrub the entire surface with your finger. That will turn the LED green, showing that you have triggered the sensors of that location. When all the surface has turned green, press the home button to quit the calibration mode. Now your sensor has been calibrated.