i have not changed anything for my deltabot, however the printing temperature recently become unstable, the extruder temperature is always jumping higher or lower than the targeted temp at a big range(around 20-30 degrees higher or 10-15 degrees lower), sometimes it triggered the max temp error.
i have checked the hardware and ensure that everything is in the right place, and i have runned the PID tuning and input the value accordingly, unfortunately the problem still exists.
anyone knows what's the cause?
thank you