Washing-Machine-Semi-Automatic

ESP32-based smart washing machine controller with MQTT connectivity, vibration-based safety monitoring, and multiple wash modes.

Features

• Multiple Wash Modes: Delicate (8min), Cotton (15min), Heavy (25min) with optimized timings
• MQTT Integration: Remote control via MQTT commands for mode selection, start/stop, and status monitoring
• Vibration Safety System: ADXL345 accelerometer with emergency shutdown on excessive vibration
• Smart Balancing: Automatic load balancing detection and compensation sequence
• Motor Control: Main motor, direction control, and dryer motor relay management
• Real-time Monitoring: WiFi + MQTT for live status, sensor readings, and diagnostics
• Energy Efficiency: Optimized ramp sequences and variable spin speeds based on vibration feedback

Hardware

• ESP32 or ESP8266 microcontroller
• ADXL345 accelerometer for vibration monitoring
• 3x Relays:
  • Main Motor (25) - Active LOW = ON
  • Direction Control (26) - Active LOW = CCW, HIGH = CW
  • Dryer Motor (27) - Active LOW = ON
• MQTT Broker for remote control
• WiFi Network connectivity

MQTT Topics

• washing_machine/command - Control commands (START, STOP, MODE_DELICATE, MODE_COTTON, MODE_HEAVY)
• washing_machine/status - Current state and mode status
• washing_machine/sensors - Vibration levels, accelerometer data
• washing_machine/timer - Elapsed time, remaining time
• washing_machine/mode - Current selected mode

Safety Features

• Vibration Thresholds:
  • Emergency: 30.0+ (immediate shutdown)
  • Warning: 20.0+ (extend spin time)
  • Ramp extend: 15.0+ (additional ramp steps)
• Automatic Balancing: Detects imbalance, runs balance sequence before spin
• Emergency Protection: Relay settle time, motor stop time, watchdog timeout

Wash Modes

Delicate

• Wash: 8 minutes
• Balance attempts: 3
• Ramp steps: 8 (gentle)
• Rinse: 3 minutes
• Dry: 2 minutes

Cotton

• Wash: 15 minutes
• Balance attempts: 5
• Ramp steps: 12
• Rinse: 5 minutes
• Dry: 5 minutes

Heavy

• Wash: 25 minutes
• Balance attempts: 7
• Ramp steps: 15
• Rinse: 7 minutes
• Dry: 8 minutes

Installation

1. Install required libraries:

   • WiFi
   • PubSubClient
   • Adafruit ADXL345
   • ArduinoJson

2. Configure WiFi and MQTT credentials in washing_machine.ino:

   const char* ssid = "your_ssid";
   const char* password = "your_password";
   const char* mqtt_server = "mqtt_broker_ip";

3. Upload to ESP32

Usage

Send MQTT commands to control the washing machine:

{"command": "START"}
{"command": "STOP"}
{"command": "MODE_DELICATE"}
{"command": "MODE_COTTON"}
{"command": "MODE_HEAVY"}

Monitor status and sensors via MQTT topics for real-time feedback.

Safety Notes

• Always secure the washing machine rack before operation
• Vibration monitoring prevents damage from unbalanced loads
• Emergency shutdown triggers automatically on excessive vibration (30.0 threshold)
• Ensure proper relay wiring and power supply ratings

License

MIT License