@futurebird Best of luck! The hardest thing for me to do here was to set up the oscilloscope right to see the bit flipping without needing an opamp. I set the trigger on CH2 connected to the switch that opens the transistor, and had to set the timing to 500ns/div and voltage to 20mV/div to see anything. Adding some filters and capacitors around helped to remove a lot of the noise coming from EMF interference.
futurebird