The major problem I have is that the max voltage output read with the DMM is 4.35 V. That value is not close to what I am looking for. Any advice to get this value 5 volts. Do I take the constrain off??
Outputs are a maximum LOW of 0.9V, and a minimum HIGH of 4.2volts at 20mA
I did try the follower didn't really change anything.I supplied the 5 from the USB.I used the constrain because there was a random 257 value that occurred. Which caused the output value to go to zero really fast. . I will keep trying. Thanks for the help.
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