U8
Manufacturer Part Number
MQ-135
LCD1
U6
Manufacturer Part Number
FRS-16A45H1015
U5
Manufacturer Part Number
WeMos_D1_mini
U7
Manufacturer Part Number
MPU-6050
R20
Resistance
10kΩ
D16
R21
Resistance
220 Ω
BZ1
U4
Manufacturer Part Number
Arduino-UNO-R3