September 28, 2018
Description
Variable-speed, motorized display table or photography turntable. Not perfectly smooth or as quiet as I'd hoped, so left as WIP.
6V N20 gearhead motor - 30RPM as-built, 15RPM recommended
DC motor speed controller board
DC jack DC099
8 O-rings - 12MM OD / 7mm ID / 2.5mm ring thickness (bought locally)
Print all the parts; one base, one top, one pinion, and 16 roller halves. The table top is printed upside-down, so glass or PEI sticker may be needed for presentable finish (?). I'm not using the "pinion support" part; shouldn't be needed. Check your Z-offset before printing the rollers ... the finished rollers need to be 4mm thick.
Assemble the rollers by inserting an O-ring and gluing the roller halves together. It's important that they are aligned well. Pop the rollers into the finger bracket deals and check that they spin freely. Solder wires to the DC jack and gearhead motor. Insert the gearhead motor and push the wires down to the bottom of the slot. Install M3x10 screw to hold the motor firmly. Install the DC jack nut. Install the wires into the terminal block of the motor driver board. Install the motor driver board with M2x5 screws (bosses should be effectively self-tapping). Install the pinion and table-top.
License:
Creative Commons - Attribution
MCmaks
