+5V                                                                                               LCD1
+5V
                                                                                                                          LM044L
                              R1
      R4                      10k
      100
                  1.0               LDR1
                                    LDR
            D1
                                                                                                                               VDD
                                                                                                                               VSS
                                                                                                                               VEE
                                                                                                                                         RW
                                                                                                                                         RS
                                                                                                                                              D0
                                                                                                                                              D1
                                                                                                                                              D2
                                                                                                                                              D3
                                                                                                                                              D4
                                                                                                                                              D5
                                                                                                                                              D6
                                                                                                                                              D7
            LED                                                                                                    +5V
                                                                                                                                         E
                                                                                                                              1
                                                                                                                              2
                                                                                                                              3
                                                                                                                                         4
                                                                                                                                         5
                                                                                                                                         6
                                                                                                                                               7
                                                                                                                                               8
                                                                                                                                               9
                                                                                                                                              10
                                                                                                                                              11
                                                                                                                                              12
                                                                                                                                              13
                                                                                                                                              14
                        +5V
+5V                                             U1
                                                                                                                              GND
                                            2                                                      14
                                                 PD0/RXD/PCINT16            PB0/ICP1/CLKO/PCINT0
                                            3                                                      15
                                                 PD1/TXD/PCINT17                 PB1/OC1A/PCINT1
                              R2            4
                                                 PD2/INT0/PCINT18            PB2/SS/OC1B/PCINT2
                                                                                                   16
                                            5                                                      17
                              10k                PD3/INT1/OC2B/PCINT19     PB3/MOSI/OC2A/PCINT3
      R5                                    6
                                                 PD4/T0/XCK/PCINT20              PB4/MISO/PCINT4
                                                                                                   18
                                           11                                                      19
      100                                        PD5/T1/OC0B/PCINT21              PB5/SCK/PCINT5
                                           12                                                      9
                                                 PD6/AIN0/OC0A/PCINT22   PB6/TOSC1/XTAL1/PCINT6                    U2
                                           13                                                      10
                                                 PD7/AIN1/PCINT23        PB7/TOSC2/XTAL2/PCINT7
                                                                                                              14                    4
                  1.0               LDR2   21                                                      23         15
                                                                                                                    SCL        P0
                                                                                                                                    5
                                                 AREF                          PC0/ADC0/PCINT8                      SDA        P1
                                    LDR
            D2                             20
                                                 AVCC                          PC1/ADC1/PCINT9
                                                                                                   24
                                                                                                                               P2
                                                                                                                                    6
                                                                                                   25         13                    7
            LED                                                               PC2/ADC2/PCINT10                      INT        P3
                                                                                                   26                               9
                                                                              PC3/ADC3/PCINT11                                 P4
                                                                                                   27          1                    10
                                                                          PC4/ADC4/SDA/PCINT12                      A0         P5
                                                                                                   28          2                    11
                                                                          PC5/ADC5/SCL/PCINT13                      A1         P6
                                                                                                   1           3                    12
                                                                             PC6/RESET/PCINT14                      A2         P7
                                                ATMEGA328P                                                         PCF8574A
                        +5V
+5V
                                                                                                        +5V
                              R3
                              10k
      R6
      100
                  1.0               LDR3
                                    LDR
            D3
            LED