Positron BASIC Community

Hi John,
I knew it was on B.7 but saw the line where it said works whatever pin the LED is on and thought there was some pretty neat programming.
The strange thing is there was some activity on the LED which seemed to change if I held the board.

Bob

Perhaps RB7 is set as an input, i.e. floating, so holding the board or crosstalk from other lines might happen to turn on the LED driver?

John

Bob

Did you have the jumper in? if not the input to the OPA floats and the led is in a bit of limbo jingo

Actually the jumper links the LED to the Op-Amp output. The Op-Amp input is permanently connected to RB7 but that can be high-impedance.