I’m sure this has been asked a thousand times but I’m struggling to wire up my ESP8266 to a stepper motor via an ULN2003 driver board.
The code appears to be okay as if I connect the power pin from the ULN to the VV pin on the 8266 it starts moving but it won’t move when connected directly to the VIN port on the board (which should be 5V if my understanding is correct).
I’ve tried connecting an external 5V power supply directly into the ULN with ground between the 8266 and ULN board but still no luck there. Which is what my end case will be setup like.
I’ve tried to put some quick pictures here (let me know if there’s a better online designer for showing this), sorry about the random setup and cable colours!
Any ideas to what’s wrong here?