# Problem using multiple stepper.h library **URL:** \ **Category:** General Guidance\ **Created:** [July 18, 2024, 2:27pm UTC](https://forum.arduino.cc/t/problem-using-multiple-stepper-h-library/1282890 "2024-07-18T14:27:21Z")\ **Posts on this page:** 1\ **Showing post:** 19
**Author:** ![DaveX](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/davex/32/751443_2.png) [@DaveX](https://forum.arduino.cc/u/DaveX)\ **Post date:** [July 19, 2024, 1:11pm UTC](https://forum.arduino.cc/t/problem-using-multiple-stepper-h-library/1282890/19 "2024-07-19T13:11:12Z")
Yes that math looks correct, and should work for the accel/cruise/decel and accel/decel speed profiles that Accelstepper approximates. There may be some misalignment due to accelstepper’s approximations of v=at and p=1/2at^2 but it is small. This thread discusses the multi-axis motion planning through calculating accel/speed constants versus the Bresenham algorithm that CNCs use: > [@User claims to achieve Syncd Starts & Ends with AccelstepperLibrary - help](https://forum.arduino.cc/t/user-claims-to-achieve-syncd-starts-ends-with-accelstepperlibrary-help/1244785): > > This user claims to achieve synchronized starts and stops regardless of step counts with a simple formula. But his method is very unconventional and I don't really understand the way he describes it. Can anyone decipher it for me so I can achieve this in my own project? I wish I could talk to him directly but the topic is closed. There are a lot of posts on this subject, but no one has a good method of getting around this using accelstepper. I know that multi-stepper exists for this but I ha… --- _[View the full topic](https://forum.arduino.cc/t/problem-using-multiple-stepper-h-library/1282890)._