divatemangesh
Newbie level 1
I am trying interface mq3 sensor to the atmega8
i want to detect alcohol & show massage (alcohol is detected )on LCD(16*2)
my connection is as follow
PORT D =LCD DATA LINE
PORT B
PORT B0 = Rs(LCD)
PORT B1 = Rw(LCD)
PORT B2 = En(LCD)
PORT C (ADC)
PORT C2 (ADC 2)= LM35 TEMP SENSOR
PORT C3 (ADC 3)= MQ3 ALCOHOL SENSOR
AND ONE BIG PROBLEM IS THAT I WAS MAKE THE CIRCUIT OF MODULE AS PER DATASHEET
WITH 5V HEATER VOLTAGE BUT EVEN ALCOHOL IS KEPT NEAR IT THEN ALSO THE OUT PUT VOLTAGE REMAIN SAME THERE IS NO DEFLECTION THEN HOW ATMEGA8 WILL KNOW THAT SENSOR DETECT ALCOHOL OR NOT
i want to detect alcohol & show massage (alcohol is detected )on LCD(16*2)
my connection is as follow
PORT D =LCD DATA LINE
PORT B
PORT B0 = Rs(LCD)
PORT B1 = Rw(LCD)
PORT B2 = En(LCD)
PORT C (ADC)
PORT C2 (ADC 2)= LM35 TEMP SENSOR
PORT C3 (ADC 3)= MQ3 ALCOHOL SENSOR
AND ONE BIG PROBLEM IS THAT I WAS MAKE THE CIRCUIT OF MODULE AS PER DATASHEET
WITH 5V HEATER VOLTAGE BUT EVEN ALCOHOL IS KEPT NEAR IT THEN ALSO THE OUT PUT VOLTAGE REMAIN SAME THERE IS NO DEFLECTION THEN HOW ATMEGA8 WILL KNOW THAT SENSOR DETECT ALCOHOL OR NOT
