The MQ gas sensorsм
Comparative test of gas sensors MQ3, MQ4, MQ5, MQ9, MQ135 for gas leak alarm.
Bought on ALI
Set of 9 sensors http://ali Oh.ski/Kqy1sd
M6 http://ali.ski/Ap7pVt
MQ 9 http://ali Oh.ski/IXbtA
M8 http://ali.ski/CjlTZa
MQ4 http://ali.ski/cYVu3
MD5 http://ali.ski/6Zaeq
MQ135 http://ali.ski/uuOwa
Gas detector 433MHz http://ali Oh.ski/2Qxns
CO detector http://ali Oh.ski/hHwLs
GSM alarm system http://ali Oh.ski/cNC6W
Ps 3003 sensor dust Plantower http://ali.ski/NW0EF
PM2.5 SHARP dust sensor http://ali Oh.ski/7dPOF5
OLED 128x32 display http://ali Oh.ski/xPd33
OLED 128x64 display http://ali Oh.ski/3zY98
TFT display 128x128 http://ali Oh.ski/oFVd6s
Recommend!
Sketches https://yadi.sk/d/cpS1lIl63TjpXV