Retrofitted motor mount for blinds automation

prusaprinters

<p>This is designed to hold a 28BYJ stepper motor in place to rotate the worm gear driver found in most household blinds.</p> <p>There are other projects which mount a motor in a 2" track and drive the rod directly. My blinds are a 1" track and there's no way to cram a motor in it.</p> <p>The mount fits into a 1" track and is adjustable along every axis that matters. It's assembled with some M3 bolts, nuts, and washers.</p> <p>I've included a couple of motor adapters, but there are probably tons of varieties of these. The <a href="https://grabcad.com/library/1131522">fusion360 design can be found on grabcad</a> in case someone needs a different adapter.</p> <p>I drive mine with an A4988 (28BYJ-48 motors converted to bipolar), and an ESP8266 running esphome.</p> <p><a href="https://blog.christophermullins.com/2020/02/16/automating-blinds-with-a-retrofitted-external-motor/">Writeup available here</a>.</p> <p>The included gcode includes all parts of the "mounting arm" parts. You'll need to print the motor block and shaft adapter separately.</p> <h3>Print instructions</h3><ol> <li>PETG works best. PLA is too brittle. I used white eSun PETG.<ol> <li>The motor plate and the arm it attaches to should be printed with supports for the rings. The slider tracks print fine w/ bridging.</li> </ol> </li> </ol>