2.4 Allong the wall

Too close to the wall? 

Far away from the wall? 

Right distance? 

What is to be done? 

Now you need extra sensors.

These will fit to Fischertechnik. See on the right side.

The yellow lines connect to I6 and I7.

The red and black line connect as shown at "Mounting". (And, you need to solder other wires. For powering these jumpers [male, male]. For the signal, you need these plugs.)

Of course you may use other US Sensors from Fischertechnik. But they are very large!