Hello friend's
I'm henry' Today I ask a question [What is a thermistor]...
So please tell me how can interface thermistor temperature with Arduino uni in LCD...
Thanks.... and please ignore my English mistakes...
Hello friend's
I'm henry' Today I ask a question [What is a thermistor]...
So please tell me how can interface thermistor temperature with Arduino uni in LCD...
Thanks.... and please ignore my English mistakes...
Today I ask a question [What is a thermistor]
It is a junction of dissimilar metals. This produces a small but reliable temperature based voltage.
You interface it to an Arduino by a amplifying this voltage so it is in the range of 0 to 5V over the temperature range you want to measure. There are chips that can help you do this.
Grumpy_Mike:
It is a junction of dissimilar metals.
That's a thermocouple, Mike, your links to thermistors should be what the OP needs, though.
Thermistors are resistors that use materials with very large sensitivity to temperature. Typical materials are semiconductors or ferroelectrics.
Normally you'd want a resistor to have no temperature dependence, these devices are the exception because they are used to either measure temperature (such as with a resistive divider, one resistor against one thermistor), or sometimes to cancel some other temperature dependence in a circuit.
So please tell me how can interface thermistor temperature with Arduino uni
You just need another regular resistor to make a [u]voltage divider[/u]. Thermistors are fairly-linear but the voltage from a voltage divider depends on a ratio. It get's a little tricky but you can find formulas/algorithms.
Thermistors aren't super accurate (and the other resistor has some tolerance) so you may need to calibrate your setup with a known-good thermometer (at room temperature or the approximate center-range of the temperature you're trying to measure).
... in LCD...
There are LCD libraries so you can display whatever you want, but make sure you get an LCD that's compatible.