Serial input troubles

I can’t seem to get any serial input from my board. All the serial data does, no matter the project, is display a value between 250 and 300, most typically about 270-280. Could it be something I myself am doing wrong? Defective board?

Hi, what board, what sketch, etc etc. Please more information. What is your board. Post a copy of the sketch and explain what it is supposed to be doing?

Tom...... :)

Serial input is in the form of bytes, the most a byte con be is 255 so if you are seeing up to 300 then it is not a serial input.

Are you using the right words? Do you mean analogue input? Have you connected the grounds together?

Much more information needed.