I've purchased various; from Reprapdiscount when they were still operating (the originators of the RUMBA board), from Geetech, from Robotdigg, and now from another random supplier in China. All are flawed on the Y axis, not a single one of them works properly.
Of course, all of them are also using the same design and the traces haven't changed. I've got a small batch in production where I've changed the traces for the Y stepper motor on the RUMBA. In 2 weeks I'll let you know if the problem persists.
Of course, all of them are also using the same design and the traces haven't changed. I've got a small batch in production where I've changed the traces for the Y stepper motor on the RUMBA. In 2 weeks I'll let you know if the problem persists.