So this Udemy class I am doing. Requires a project with a potentiometer. Point being I think the dam thing is broken. The MSP430 launch pad that the class requires also wont show the registers but that is a whole different problem. As far as I know. so the circuit is rather simple. I take power from a pin marked 3v3 then send it to the bread board threw a 470 ohm resistor then to ground finally threw the potentiometer to pin 9.2 if the micro controller reads above 1.65v led comes on.
Now basically what is happening is light only comes on after the ground is removed from the circuit. The whole circuit reads roughly 3.3v, if you wan't to be precise 3.28 to 3.32 with the ground removed. here is the odd thing I had this cuircuit working the other day and the high side was flipped?? The other odd thing is that if the ground is in i can't get a reading after the resistor ( this may be my inexperience with electricity showing).
So what is the rub here is this a classic bad potentiometer or what? An, why wouldn't i be able to get a reading after the resistor when the ground is connected. Is there any way some one would suggest testing the potentiometer without it being part of this circuit. Ignore the small black chip its there just so i don't bend the leads when I transport it from work to home.
Now basically what is happening is light only comes on after the ground is removed from the circuit. The whole circuit reads roughly 3.3v, if you wan't to be precise 3.28 to 3.32 with the ground removed. here is the odd thing I had this cuircuit working the other day and the high side was flipped?? The other odd thing is that if the ground is in i can't get a reading after the resistor ( this may be my inexperience with electricity showing).
So what is the rub here is this a classic bad potentiometer or what? An, why wouldn't i be able to get a reading after the resistor when the ground is connected. Is there any way some one would suggest testing the potentiometer without it being part of this circuit. Ignore the small black chip its there just so i don't bend the leads when I transport it from work to home.
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