Hello all, I recently wired up a timer that uses an LM386 amplifier in combination with a 3 Ohm, 4 watt speaker. The speaker and amplifier work perfectly normally, unless I add in the code for the LCD, in which the speaker immediately starts humming and hissing. The LCD is a 20x4 screen that uses a…

Problem with speaker and amplifier when using an I2C LCD

EverythingTechPro November 17, 2019, 9:02pm 5

How would I decouple the supply? With a capacitor?

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