C3
C2
C1
C0
R1
R2
R3
R4
C0
C1
C2
C3
R4
R3
R2
R1
RE3/MCLR/VPP
1
RA1/AN1/C12IN1-
3
RA2/AN2/VREF-/CVREF/C2IN+
4
RA4/T0CKI/C1OUT
6
RA5/AN4/SS/C2OUT
7
RB0/AN12/INT
33
RB1/AN10/C12IN3-
34
RB2/AN8
35
RA7/OSC1/CLKIN
13
RA6/OSC2/CLKOUT
14
RD5/P1B 28
RD6/P1C 29
RD7/P1D 30
RC4/SDI/SDA 23
RC5/SDO 24
RC3/SCK/SCL 18
RC2/P1A/CCP1 17
RC1/T1OSI/CCP2 16
RC0/T1OSO/T1CKI 15
RB7/ICSPDAT
40
RB6/ICSPCLK
39
RB5/AN13/T1G
38
RB4/AN11
37
RD3 22
RD2 21
RD1 20
RD0 19
RC7/RX/DT 26
RC6/TX/CK 25
RE2/AN7 10
RE1/AN6 9
RE0/AN5 8
RA3/AN3/VREF+/C1IN+
5
RD4 27
RB3/AN9/PGM/C12IN2-
36
RA0/AN0/ULPWU/C12IN0-
2
U1
PIC16F887
RES
10K
+5V
1 2 3 A
4 5 6 B
7 8 9 C
* 0 # D
2
3
4
5
6
7
8
9
1
RP1
10K
RC1
RC2
RC6
RC4
RC0
RC3
RD0
RD1
RE0
RA0
RA1
RA2
RA3
RA4
RA5
RA0
RA1
RA2
RA3
RE0
RA5
RA4
RD1
RD0
RC3
RC0
RC7
RC2
RC4
RC1
RC6
IN1
5
IN2
7
ENA
6
OUT1 2
OUT2 3
ENB
11 OUT3 13
OUT4 14
IN3
10
IN4
12
SENSA
1
SENSB
15
GND
8
VS
4
VCC
9 U2
L298
RC5
+5V
A+
A-
B+
B-
+88.8
B+
B-
A+
A-
RC7
RC5
RD2
RD3
RD4
RD2
RD3
RD4
RST
R1
10k
1
2
20M
CRYSTAL
D7
14
D6
13
D5
12
D4
11
D3
10
D2
9
D1
8
D0
7
E
6
RW
5
RS
4
VSS
1
VDD
2
VEE
3
LCD1
LM016L