Originally Posted by MinHeadroom
Great build. Love automated mask documentation!
Thanks, I’ve made a lot more progress, but not to the point of testing the full setup yet.
Here’s a few pics of the parts I’m making. These pics are of the leading edge of the mask. I 3D printed them in black. Each one is 5” long, with little inserts. For my screen I’ll have 13 on each side. The hole in the center is for a 1/4” threaded rod. This should hold everything together. I’m going to wrap the mask around this.
For the tube, I’ve printed these shapes. They aren’t pure circles, but octagons because I thought they’d go together and hold torque better. In both designs, the slots are dual purpose- first to save plastic on the printer and weight on the part. second, if in need to I can print little inserts to hold the fabric or to stiffen the system.
I’ve also designed and printed a bracket to hold a NEMA23 motor and it’s controller (~$100 worth of parts per side) and an adapter to lock into these tubes. I still need to make a bracket and adapter for the other end of the tube.
The bracket makes the tube even with the leading edge pieces in the front, and takes up about 3/4” in in the back for the controller. I’ve also wired a limit switch in there so my software knows when the system is all the way open.
I’ll be controlling this with a raspberry pi setup as a web host. I’ve written and tested most of the basic code and it works fine. This will allow my home automation system to send a simple tcp command to make it go to one of several presets.
On a side note, if you don’t have a 3D printer, consider it. I just got mine earlier this year and it has been so useful. You can find a lot of stuff already pre designed to just print. Just today, I had a broken dresser drawer plastic slider thing, googled 3D designs, found a bunch of different ones and printed the one that looked right. 2 hours and about $1.00 worth of PLA and I had a fixed dresser. Have also found a lot of simple brackets for things like network switches, etc.
I also taught myself cad by watching YouTube and found some easy to use free cad software to do my own designs. ( there is a bunch of wasted PLA in a landfill somewhere from me learning how to print things) but I’m really glad I got it.
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