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Topic: Love-o-meter : Big Love.... (Read 142 times) previous topic - next topic

NCO


Hello,

I have implemented the project number 3 : the love-o-meter.

Once the first LED is lit, measured temperature is getting very high (more or less +10 °C for each LED which is lit).

As required in the book, each of the 3 resistors is 220 Ohm.

By switching to a 10 kOhm resistor, project works properly.

By measuring tension (Volt) around the TMP device, when temperature is getting very high, it goes from 5,07 V to 4,77 V : more or less 3 * 10 °C, because of 3 LEDs ? Maybe just coincidence.

Does anyone have an explanation ? Has someone faced the same situation ?

NCO

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