ap
P IC
l
17
18
1
2
6
7
8
9
10
11
12
13
ation鈥檚
AP5 鈥?Electronic Lock
Farnell Order code 120-108
Circuit Diagram
14
R1
6k2
4
16
IC1
R2
1k
R3
1k
Q1
BC237B
R4
4k7
R5
4k7
A0
A1
A2
A3
J1
1
2
3
MCLR
OSC1
OSC2
VDD
U2
1
2
15
3
PASS FAIL
4.5V BATTERY
B0/INT
B1
A4/TMR0
B2
B3
B4
PIC16F84
B5
B6
B7
PROGRAM
U1
1
2
VSS
C2
100nF
C1
100pF
Q2
BC237B
1
5
SW1
3
SW2
2
SW3
2
1
Board Layout
Assembly
Insert the components as shown, ensuring the
PIC is correnctly inserted. Check the board for
solder bridges and dry joints before applying
power. Leds should be inserted with the
longer lead to the + symbol on the drawing.
The battery holder is best inserted with the
pins passed through the top of the board,
soldered and then gently folded under the
board and finally attached with the double-
sided pad supplied.
J1 鈥?Connections to customer circuit.
2
D1
LED
1
D2
LED