Schematic of Safe
3.3V
3.3V
3.3V
Pin A
_6
Pin B
_2
_3
_6
_5
Pin C
R2
Resistance
10kΩ
R6
Resistance
10kΩ
R7
Resistance
1kΩ
_4
R9
Resistance
1kΩ
R1
Resistance
1kΩ
_1
_6
R5
Resistance
1kΩ
R3
Resistance
1kΩ
R4
Resistance
10kΩ
_6
Q2
D2
Q3
D1
D5
Q1
D4