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In Topic: TMP36 Temperature Sensor/SB Protoshield
15 October 2011 - 11:35 AM
Is the same component a potentiometer than a trimpot?
I used a potentiometer and this is the resulting schema:
I calibrated the potentiometer for reading 2.982 V at 25 degrees, is that correct?
It seems to work properly! When the Ethernet connector is plugged in, I get values with differences up to 10 degrees. Without the connector the difference is less than 2 degrees.
Can I avoid the jittering? If not, I will program an average algorithm.
Thanks so much Mario!
I used a potentiometer and this is the resulting schema:
I calibrated the potentiometer for reading 2.982 V at 25 degrees, is that correct?
It seems to work properly! When the Ethernet connector is plugged in, I get values with differences up to 10 degrees. Without the connector the difference is less than 2 degrees.
Can I avoid the jittering? If not, I will program an average algorithm.
Thanks so much Mario!
In Topic: TMP36 Temperature Sensor/SB Protoshield
13 October 2011 - 07:30 PM
Hi everyone!
I've tried it again Mario and this is the resulting schema.
And the code I'm using to get the Celsius degrees.
I think I have done it correctly this time, but I get values between 180 and 190.
Is there something wrong? Do I need to do a calibrated sensor?
Thanks for your help!
I've tried it again Mario and this is the resulting schema.
And the code I'm using to get the Celsius degrees.
double voltage = ADC_Value * 5.0 / 1023; double tempK = voltage * 100; double tempC = tempK - 273.15;
I think I have done it correctly this time, but I get values between 180 and 190.
Is there something wrong? Do I need to do a calibrated sensor?
Thanks for your help!
