I have been digging around some more, and have re-examined my circuit several times. Embarrassingly, while my circuit was arranged correctly, I had a loose connection that caused the unexpected behavior.

I seem to have the circuit working correctly now. If D5 is LOW, the mosfet is ON and the ...

Hi.

I am experimenting with an 2n7000 mosfet and a d1 mini pro (esp8266). My code toggles between the LED_BUILTIN and an external LED on pin D5 (alternating the LEDs). I am trying to drive the external LED with the 2N7000 using the circuit below.

2n7000.png

(Note "muc" --> "mcu"

My ...