Hi !
I'm noob what comes with electronics, so here we go ...
Problem is that LM335 temperature sensor should give about 3 volt from Vout, but i get 4.8 volt in room temperature.
Also, there is only very little change about voltage readings (from ADC) even temperature change is 10 - 20 centigrade.
ADC is working properly and i get sensible readings from there.
LM335 is connected to PC18F452 ADC (RA0)
VDD +5V ------ 2.2Kohm -----/--- pin1 at LM335 (the left one)
RA0 -------------------------/
Ground ---------------------------pin2 at LM335 (the middle one)
pin3 at LM335 is not connected
I hope you can help me with this.
PS. i also try another sensor with similar problems, so apparently it is't the sensor or then i'm keep killing those![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I'm noob what comes with electronics, so here we go ...
Problem is that LM335 temperature sensor should give about 3 volt from Vout, but i get 4.8 volt in room temperature.
Also, there is only very little change about voltage readings (from ADC) even temperature change is 10 - 20 centigrade.
ADC is working properly and i get sensible readings from there.
LM335 is connected to PC18F452 ADC (RA0)
VDD +5V ------ 2.2Kohm -----/--- pin1 at LM335 (the left one)
RA0 -------------------------/
Ground ---------------------------pin2 at LM335 (the middle one)
pin3 at LM335 is not connected
I hope you can help me with this.
PS. i also try another sensor with similar problems, so apparently it is't the sensor or then i'm keep killing those
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