Hello and good day. I have project to read engine ECT sensor, as monitor with multimeter. Lower temperature have higher voltage high temperature.
For example 0'C - 60'C i have voltage result 5V to 3V,
70'C - 115'C i have voltage result 1.2V1 - 0.65V
The problem is, by using arduino nano/uno... the lowers Analog pin can read voltage is 1.2V, lower than that it will read 0V. I have try Non inverting Amplifier LM358, TL084 and UA741... it work half way.. if i adjust feed back resistor to low, i can go higher voltage output, if feedback resistor to high i only can get lower minimum voltage.
It always too low or high output i get... Is there any simple microcontroller like arduino can read lower analog voltage value like 1mV to 5V? or is there a way used amplifying circuit to solve the problem?
For example 0'C - 60'C i have voltage result 5V to 3V,
70'C - 115'C i have voltage result 1.2V1 - 0.65V
The problem is, by using arduino nano/uno... the lowers Analog pin can read voltage is 1.2V, lower than that it will read 0V. I have try Non inverting Amplifier LM358, TL084 and UA741... it work half way.. if i adjust feed back resistor to low, i can go higher voltage output, if feedback resistor to high i only can get lower minimum voltage.
It always too low or high output i get... Is there any simple microcontroller like arduino can read lower analog voltage value like 1mV to 5V? or is there a way used amplifying circuit to solve the problem?