This is a remix of Adafruit's Lab Shaker - as much as I loved the design, I thought it was overly complicated and more expensive than it needed to be, so I remixed it to use a very small and inexpensive motor speed controller specifically designed for these types of applications. See instructions below.
What you'll need:
How to put it together:
Cut off one side of the spinning piece coming off the motor/gear assembly. I did this to make the orbital shaker shorter so it could fit in my refrigerator with something on top of it.
Attach the motor to the bottom of the top plate using the M3x25mm screws.
put the base plate onto the walls.
Put the nub of the speed controller's potentiometer (the part that rotates to increase or decrease speed) through the small hole in the walls and fasten into place with some M3x4mm screws (you can use slightly larger or smaller screws here) - then place the knob on.
Attach the USB cable to the inner part of the wall and cut the cable with enough wire to reach the motor speed controller.
Strip the black and white wire and plug them into the respective + and - (red wire is +, black wire is -) on the speed controller.
Plug the motor into the "motor" part of the speed controller (again, black is -, red is +).
put 2 bearings on/in each of the brackets except for the motor bracket, which only uses one bearing.
- Attach it all together according to the photos or the instructions on this site: https://learn.adafruit.com/crickit-lab-shaker/
That's it! Now you have a very simple and inexpensive orbital lab shaker :)
PS. Be sure to check out the new facebook group called "3D Printing Useful Things!" - where you can find lots of other useful 3D prints :)
I only used supports on the brackets, nothing else needed supports.
I also printed with 100% infill for everything because the parts are thin and I wanted them to be as strong as possible.