Stepper Motor Delay

[Talal-Zahid786]

Hi, I build your project. The project is really helpful, but I have an issue. When I input values in the Nextion display, The stepper motors stop for a second after every revolution of the stepper. It looks like a delay.

[carl1961]

@Talal-Zahid786 it is the StepperDriver driver, I tried every thing to remove the delay. minimum delay require using much lower RPM

[domiluci]

@Talal-Zahid786 it is the StepperDriver driver, I tried every thing to remove the delay. minimum delay require using much lower RPM

I'm working on an upgraded version of this project. I was initially experiencing these odd delays after building this project as a base, so I ended up writing my own stepper motor driver library utilizing interrupts to send the pulses to the motor. I do not believe the StepperDriver library does that, which likely explains the delays you're getting at higher RPM; pulses need to be sent faster the higher the RPM,, meaning everything else has to wait for a long enough free spot of time to run between pulses being sent to the SM driver.

That's why interrupts are the best way to run a SM at high RPM. If you can convert to a dual+ core MCU, that's even better, and another way to solve the delay issue.