U7
U3
U2
U6
SW1
R5
Resistance
15KΩ
R1
Resistance
10KΩ
X3
U1
R7
Resistance
15KΩ
R4
Resistance
15KΩ
R3
Resistance
10KΩ
R2
Resistance
10KΩ
R6
Resistance
15KΩ
SW3
SW2
U4
J1
BT1
High Voltage
Microcontroller
Shift register
SW5
Power
RTC
Buttons
U5
IC1