The Wall Sensor Board is used for wall following and maze solving
This is the view of the top of the PCB
This the bottom of the PCB
We start by adding the resistors. There are 14 of these of 7 different values so be careful which ones go where. Bend the leads over as close to the body of the resistors to get them to fit into the holes.
First add the 5 resistors R2, R5, R7, R8 and R9 which are all 33 ohms (colour banded orange, orange, black) which are used for power decoupling and also the three LED load resistors