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I have connected the circuit and everything seems to be fine. But I am not getting readings on the serial monitor app. It only displays the letter 'r'. What do you think seems to be the problem? Please help it's urgent! I have to submit this soon.
Does the battery have to be 7.4 volts? Won't it be too much? Also can I power the circuit with a usb connection? ( I'm not making the rocket just the data logger as a demonstration. So I don't need to move it around much)