I tried several times but without success to get the trimmer changing the output voltage of the LM317T . I tired to link the Pin 1 and 2 then all goes to ADJ pin of the LM317T and pin 3 to ground or 2 and 3 to ADJ and pin 1 to ground or using only 2 pins as shown below but nothing worked . Nothing wokred means the voltage remains constant .
Note that the trimmer is working fine when it is not combined with the voltage regulator ( 1 to + , 2 to Vout, 3 to - ) Could you advise which pins numbers to use and how?
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The input voltage is 5V of an arduino uno . The output voltage required is 3.6 V