sir i am doing this clap counter. i have assembled the circuit. i am getting 5v at collector of 3rd transistor. when a sound is given it goes to 1v and again raises to 5v. but when i interface this to microcontroller 39 pin the 5v at collector is going to 0. but when i give direct 5v to 39th pin i am getting the count. but when kept at collector the potential goes to 0.3v. what would be the problem sir.
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