This solar tracker system uses the Arduino UNO board ... As you can see in the schematic all that you need to make the electrical part is the board, one servo, 2 LDRs and 2 x 10K resistors. Usually ...

and the other servo’s signal wire directly to Arduino pin 10, as shown in the circuit diagram in Figure 10-4. 3. Connect the GND from the joystick module to the Arduino GND rail, and +5V to the ...