Thingiverse
28BYJ-48 based pan and tilt for sensor scanner by mrbuseco
by Thingiverse
Last crawled date: 5 years ago
I was getting weird sensor data while using servo motors. I suspect conflict in the Atmel interrupt domain since servo libraries and sensor libraries both use interrupts, but I am not really sure. Anyway, I designed a pan-tilt system based on the 28BYJ-48 and/or MP35HA31 stepper motors set up in a counter-rotating configuration.
The 28BYJ-48 used for panning has a lot of backlash, at least mine did, so I made a little bungee chord out of a rubber band and some wire terminals which I attached to keep tension on the system and take out the looseness.
It's may be going overboard, but the system uses two 688zz bearings which snap in to place in the recesses provided. Originally designed for one stepper motor for tilt operations but found that two weak and it was missing steps at speed due to tension from connecting wires.
The 28BYJ-48 used for panning has a lot of backlash, at least mine did, so I made a little bungee chord out of a rubber band and some wire terminals which I attached to keep tension on the system and take out the looseness.
It's may be going overboard, but the system uses two 688zz bearings which snap in to place in the recesses provided. Originally designed for one stepper motor for tilt operations but found that two weak and it was missing steps at speed due to tension from connecting wires.