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Schematic

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3D View

Schematic of Keypad lock reference design
C2
Capacitance
4.7uF
C7
Capacitance
1uF
C6
Capacitance
1uF
U1
+5V
RED
+5V
+5V
+5V
C5
Capacitance
22uF
+5V
C1
Capacitance
120pF
GREEN
C4
Capacitance
22uF
+5V
C8
Capacitance
0.1uF
+5V
+5V
Q1
RST
ISP
R5
Resistance
150 Ω
MOSI
MISO
SCK
ROW_3
RESET
R4
Resistance
150 Ω
COL_3
COL_1
RESET
ROW_4
ROW_2
BUZZER
MOSI
ROW_1
ROW_1
SCK
LED_G
RESET
ROW_3
R3
Resistance
2.2kΩ
LED_R
COL_2
MISO
LED_G
COL_1
BZ1
ROW_2
COL_2
LED_R
R2
Resistance
10kΩ
ROW_4
COL_3
BUZZER

Keypad lock reference design