Smart Curtain

This project is not yet complete.

ABOUT

DESCRIPTION

Smart Curtain is an automation of curtains to open curtains to a certain position either immediately, at a specified time, at a predicted time, or at sunrise/sunset. It can run as a Hub-Node (master-slave) system through a MQTT Broker. Other devices can control the Curtain through MQTT. The Hub runs using a Python (Flask) web server for the backend, a React frontend, a Postgres database for storing curtains, their states and user variables, and a python instance for automatic event creation & management. The Node runs Arduino compiled and bootloaded code.

FEATURES

• Curtain that
  • Knows whether it is closed or open
  • Receives move and status requests through MQTT on a
    • Home level
    • Room level
    • Individual level
• Hub React App for human interfacing
• Hub Python Flask backend for scheduling additional features
  • Immediate movement to a specified position (0–100%)
  • Move to a position (0–100%) at a specified time
  • Sunrise opening and sunset closing
  • Event predition
• Hub Postgres database for storing home, rooms, curtains, events, and options

How It Works

TODO: Add use case diagram

Requirements

• Raspberry Pi or linux computer with W/LAN capabilities
• Curtain Electronics
  • ESP32 dev board
  • Stepper Motor and Controller (Nema 17 & TB 6600)
  • 1 End Stop Sensor
  • 1 12V to 5V Buck Inverter
  • 1 12V Barrel Power Supply
  • 1 Female Barrel Socket
• Curtain Other Hardware
  • 20x20 extruded aluminum rod with 4 channels
  • 3D printed parts to make this sucker work
  • 2 GT2 Timing Belt
  • 2 GT2 Pulley
  • GT2 Belt Free Wheel

CONTENTS

• ~/3DModels The 3-D Models for the SmartCurtain
• ~/Documentation Descriptions, examples, & diagrams of this project
• ~/Hub/ The scripts for the Raspberry Pi/Hub system to server requests from user & nodes
• ~/Node/ The arduino program to query the Hub for action information.
• ~/Testing Virtual devices & other scripts used for testing code/systems
• .gitignore SELF EXPLANATORY
• README.md SELF EXPLANATORY

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INSTALLATION

Installation occurs over 3 parts. Please use their respective installation documents

• Hub installation
• Node installation
• Curtain installation

HARDWARE SETUP

Changed: do not trust instructions

• Make sure hardware works individually (See diagrams below for specifics).
• Connect all devices to network and assemble curtain.

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NOTES

INSTALLED EXTERNAL PACKAGES

• postgresdb
• python3.10:
  • requests
  • Flask
  • Flask-Cors
  • psycopg2
  • paho-mqtt
  • SQLAlchemy
  • astral==1.10.1

DESIGN DECISIONS

• Options precedence is selected High -> Low from Curtain -> Home (because I am specifying that a specific item has precendence over a more general category).
• Events precedence is selected High -> Low from Home -> Curtain, as an event for an area includes more specific items in that area

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CONSIDERED FUTURE ADDITIONS

• 1. Google Calendar Event Setter
• 2. Thermostat & light level integration (if it's cold & dark outside then close curtains for better insolation (and vice versa))
• 3. Who Is Home (ping Android phones to see if person is on local network) closing/opening
• 4. Mobile App
• 5. WearOS App

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created by: MPZinke on 08.20.2018

edited by: MPZinke on 2020.12.28 to actually make it a README instead of a text file.

Remember that you're making this at your own accord and I take no responsibility for any mistakes or problems that may arise.

edited by: MPZinke on 2023.05.03 to use MQTT.

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Appendix

• Nema 17 has a step size of 1.8°/step or 200 steps/revolution Source
• TB6600 16x Micro stepping equates to ~80 steps/mm (I measured it to be ~80.5 steps/mm)
• Example for AMT10
• Example for Dual Core Arduino