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Oct 3, 2019 at 19:12 history edited Spehro 'speff' Pefhany CC BY-SA 4.0
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Oct 3, 2019 at 19:10 comment added Spehro 'speff' Pefhany @RussellMcMahon Glad you saw it first and avoided duplication/irritation. With a 2.5V MOSFET and a bit of cheating (on very weakly pulling the output above 3.3) a green LED + pullup resistor could work, and indication comes for free.
Oct 3, 2019 at 18:50 comment added Russell McMahon I just went to say that. I see you've said it. I won't :-) .
Oct 3, 2019 at 18:43 history answered Spehro 'speff' Pefhany CC BY-SA 4.0