Figure 1 shows the schematic diagram for the project. The breadboard layout for the project is quite also cramped, as the LCD module uses a lot of the acts. Space Check your datasheet for the relay, as the connection pins can be quite counterintuitive and there are several pin layouts, and your layout may not be the same as the relay that the author used. is to Figure 8-2 shows the breadboard layout for the motive project. You can also use a multimeter to find the coil the connections by putting it on resistance mode. They use to will be the only pair of pins with a resistance of 40 to 100 home.