Stepper Driven Iris Damper

thingiverse

I loved the original design but wanted to use a stepper motor instead. I'm using a 28BYJ-48 and uln2003 driver via ESP8266 connected to HomeAssistant. This will be mounted onto a hardboard panel on my resin printer cabinet to control air flow / exhaust fumes. I took the original files and adjusted the gear to be raised by 2mm and fit onto the stepper spindle. I then modified the Baseplate and Topside to accommodate the stepper motor. I also extended tubing to allow plenty of space to mount inside the cabinet and still connect the exhaust hose on the exterior side. I can't seem to get the video to load above so here is a link to it: https://www.youtube.com/watch?v=mGKH6gBEm_8