I bought these blinds very cheaply from amazon and automated them using Nema17 motors and ESPHome. Many cheap blinds come with exactly the same layout.

You will need some experience with electronics to make this project work.

Components

You will need the following components:

• Roller Blinds
• Nema 17 Stepper
• ESP32 Board as Controller (I used a tiny ESP32-C3)
• Stepper Driver (A4988 or TMC2209) - I recommend the TMC, as they are way more quiet
• 7x M3 countersunk screw
• 12V Power Supply
• Step Down Converter

Wiring

The stepper driver and ESP are connected like this:

Also hook up the Step Down Converter to supply 5V to your ESPs 5V Pin

Assembly

You will need to take apart the pulley part of the blind and insert the half where the cord goes into the large gear.

Software

You can use ESPHome to programm your ESP.

Take a look at my ESPHome Config as a reference and modify it to your liking.

Good luck and have fun! :D