I have a DMX light that rotates a gobo using a 28BYJ-48 stepper motor. It has four DMX responsive settings: off, slow, medium, fast. However 'slow' is still about four times too fast for the effect I need.
To make it slower I'm considering replacing the 28BYJ-48, if possible, by just swapping it with another 5V stepper motor the same size that goes slower. Can you suggest an alternative motor?
- I'm not able to alter the motherboard components or recode the firmware.
- The 'standard DMX speeds' of the 28BYJ-48: slow is 1.83 rpm; medium is 2.09 rpm; fast is 2.44 rpm. I'd like anything slower, but I think .5 rpm would be ideal.
- I've read reference to 're-gearing' stepper motors. If this would be a better alternative please advise why.
- I haven't been able to slow the rotation with DMX software. I've sought advice on DMX forums about the software side and there doesn't seem to be a solution there. I've tried 100ms on/off iterations (the minimum time possible) through the software but this makes it jerky.