When I found out that Sonoff came out with a nice affordable app-based controller (the Sonoff DualR3), I had a path forward with automating blinds.

My blinds can do the following:

• automatically open 30 minutes after sunrise
• automatically close 30 minutes before sunset
• run the motor 6 seconds
• automatically shut off if exceeds a user-specified wattage (closing the blinds when they're already closed)
• "manual" switch on the side of the unit that you can control the blinds w/o app

2 main parts you need to print are included:

• the housing the holds the Sonoff, motor, and interfaces with the blinds
• the coupler that links the motor with the blinds mechanism

Parts you will need to buy:

1. Blinds tilt mechanism (designed to be used with a rod)
   https://www.amazon.com/gp/product/B00JP4Z0NE/
2. Sonoff DualR3 (I believe the competing Shelly1 can do the same but i have no experience). The wiring diagram that comes with the unit is enough to help figure out how this should be connected
   https://www.amazon.com/gp/product/B091HYC35J/
3. AC Motor and capacitor (30-36 rpm is a good speed, but it's up to you!)
   https://www.amazon.com/gp/product/B08R8J2HH5/
4. Mometary Rocker Switch (3-position)
   https://www.amazon.com/gp/product/B09NY18SVQ/
5. Wire Terminal Block - cut to 4 terminals
   https://www.amazon.com/ERKOON-Terminal-12-Position-Electric-Electrical/dp/B0943N3PBF/

Screws:
I designed them so that you can just screw them in to create the threads. But if you want to use threaded inserts, you would need to use the included "mount_threadedinserts" model.

1. Coupler requires an M4x15mm screw (qty 1). Cannot be shorter than 10mm or longer than 15mm
2. Sonoff mounts with M4x10mm screws (qty 2)
3. Motor mounts with M4x15mm screws (qty 2)

These blinds have been running for over 6 months. When I am out of town, I do monitor them with a camera in case of power outage so I can see the position. Unfortunately there's no position sensor or a temperature sensor for really hot days. I would have to probably implement an arduino solution for something like that.

Anycubic

i3 Mega S/Pro

Yes

Yes

0.3

15%

probably should have used PETG but it's been using PLA so far without any issue. Might need to reprint it if it starts to overheat!