Alcohol Gas Sensor — MQ3

$25.2 $39.82
This alco­hol sen­sor is suit­able for detect­ing alco­hol con­cen­tra­tion on your breath, just like your com­mon breath­a­lyz­er. It has a high sen­si­tiv­i­ty and fast response time. Sen­sor pro­vides an ana­log resis­tive out­put based on alco­hol con­cen­tra­tion. The dri­ve cir­cuit is very sim­ple, all it needs is one resis­tor. A sim­ple inter­face could be a 0–3.3V ADC.This sen­sor has a high sen­si­tiv­i­ty and fast response time. The sen­sor’s out­put is an ana­log resis­tance. The dri­ve cir­cuit is very sim­ple; all you need to do is pow­er the heater coil with 5V, add a load resis­tance, and con­nect the out­put to an ADC.FEATURES:5V DC or AC cir­cuitRequires heater volt­ageOper­a­tion Tem­per­a­ture: ‑10 to 70 degrees CHeater con­sump­tion: less than 750mW* 16.8mm diam­e­ter9.3 mm height with­out the pinsTechnical DataCon­cen­tra­tion : 0.05 mg/L ~ 10 mg/L Alco­holOper­at­ing Volt­age : 5V ±0.1Cur­rent Con­sump­tion : 150mAOper­a­tion Tem­per­a­ture : ‑10°C ~ 70°CPin OutVCC – Input Pow­er Sup­plyGND – Sup­ply GroundDO – Dig­i­tal Out­putAO – Ana­log Out­putDOCUMENTS:DatasheetArduino Tuto­r­i­al in Por­tugueseWiring Exam­pleArduino Breath­a­lyz­erAnoth­er Breath­a­lyz­erbil­dr Tuto­r­i­al
Biometrics

Biometrics