Your project looks great. I was just looking at the motors you use, does your stepper motor have enough torque for the application? I am using a stepper with a holding torque of 9Ncm and it still struggles at high speeds...
Here is a video of the very early stages of my project -
Sorry, I was working with a separate sketch to my main sketch so hadn't included the LCD header file! (I included it in the accelStepper.cpp file instead)
The code I am trying to implement within the runSpeed() function is:
Simple enough, but I still get the following error:
/Applications/Arduino.app/Contents/Resources/Java/libraries/AccelStepper/AccelStepper.cpp: In member function 'boolean AccelStepper::runSpeed()':
I also get two other errors saying 'LCD' and 'stepCount' were not declared (the same errors in my original post). Obivously, these are declared in my sketch but do I need to declare them in accelStepper.cpp file too?