https://github.com/hugow04/smarthome

Automated smart home system with blinds control and Yeelight sunrise feature using ESP32.
https://github.com/hugow04/smarthome

automation esp32 gearbox home-automation iot mqtt nema23 ntp planetary-gearbox smart-home stepper-motor tb6600 yeelight

Last synced: about 2 months ago
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Automated smart home system with blinds control and Yeelight sunrise feature using ESP32.

• Host: GitHub
• URL: https://github.com/hugow04/smarthome
• Owner: HUGOW04
• License: mit
• Created: 2025-02-04T16:13:44.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2025-02-04T17:32:23.000Z (over 1 year ago)
• Last Synced: 2025-04-14T01:17:32.597Z (about 1 year ago)
• Topics: automation, esp32, gearbox, home-automation, iot, mqtt, nema23, ntp, planetary-gearbox, smart-home, stepper-motor, tb6600, yeelight
• Language: C++
• Homepage:
• Size: 32.2 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Automated Blinds System

## Project Overview

This project is an automated blinds system powered by WiFi and a **NEMA 23 stepper motor** controlled by an **ESP32 microcontroller**.  

Since the motor alone was too weak to lift the blinds, I integrated a **planetary gearbox**. The gearbox increases torque output by a factor of 4–5 using its design where one central *sun gear* is surrounded by four *planet gears*. This evenly distributes the load and provides the extra strength needed without requiring a larger, more power-hungry motor.  

With this setup, the blinds move smoothly and reliably, even under load.

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## Planetary Gearbox System

- **Gear design:** Central sun gear with four planetary gears.  

- **Purpose:** Torque amplification (4–5×).  

- **Result:** Stable lifting of blinds with a relatively compact motor.  

---

## How the System Works

- **ESP32 control:** Connected to the local WiFi network.  

- **Time synchronization:** Uses **NTP (Network Time Protocol)** for accurate scheduling.  

- **Automatic schedule:**

  - Opens blinds at **6 AM on weekdays**.  

  - Opens blinds at **9 AM on weekends** (for a more relaxed start).  

  - Closes blinds at **10 PM every night** for privacy and security.  

---

## Manual Control and Sleep-In Mode

Originally, the system relied on a second ESP32 with a display to send control signals.  

This was replaced by a simpler, more flexible solution:  

- The main ESP32 now hosts its own **web server**.  

- Features of the web interface:

  - Manually open/close blinds.  

  - Override scheduled operations (e.g., sleep in).  

  - Force blinds to move at any chosen time.  

  - Temporarily disable automation for specific days.  

This gives full flexibility and makes the system easy to manage remotely.

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## Experimental Setup

- Tested multiple stepper motors to find the right balance of power and efficiency.  

- Adjusted the gear tracks to perfectly fit the curtain setup.  

- Iterative trial-and-error ensured smooth operation without motor overload.  

- The final system achieves **reliable movement with minimal mechanical issues**.  

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## Demo



  

  

  



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## Future Improvements

- Integration with smart home assistants (Google Home, Alexa).  

- Light sensor input to adjust blinds dynamically.  

- Mobile-friendly control dashboard.