New answers tagged software
The simplest way to "remember" a starting position is to make the starting position 0. You can do this using Rest in the Motor Rotation block (1). After your motors have moved (simulated by (2)), you can use a loop (3) to run the motors back to zero. The basic idea though is that if the motor position is negative, then we need to run the motor in the ...
I tried to find the answer to this a year ago. Unless you build some sort of synchronisation point using another sensor, you can't.
If you are planing on physically touching the brick that will then touch the screen then you could use a trick similar to that used by capacitive gloves There just needs to be a conductive medium between your finger and the screen so you could add a thin strip of copper tape or anything metallic to bridge the gap between your finger and the touch screen ...
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