feat: Revise README for clarity and detail on features, setup, and configuration

README.md

@@ -1,24 +1,53 @@
 # 🌱 Auto Garden
 
-> Automated garden monitoring and control system using Raspberry Pi Pico W
+> Automated climate control system using Raspberry Pi Pico W with web interface and scheduling
 
 ## Overview
 
-This project automates garden monitoring using a Raspberry Pi Pico W with temperature sensors, Discord notifications, and AC control for climate management.
+This project provides automated climate monitoring and control using a Raspberry Pi Pico W. Features dual-zone temperature monitoring, AC/heater control, time-based scheduling, and a web interface for easy management.
 
 ## Features
 
-- ✅ WiFi connectivity with auto-reconnect
+- **Core Features**
-- ✅ Inside/Outside temperature monitoring (DS18B20 sensors)
+  - ✅ WiFi connectivity with auto-reconnect and static IP
-- ✅ Discord notifications for temperature readings
+  - ✅ Inside/Outside temperature monitoring (DS18B20 sensors)
-- ✅ Separate alert channel for critical temperatures
+  - ✅ Web interface for monitoring and configuration <http://192.168.x.x>
-- ✅ Temperature logging to CSV file
+  - ✅ Discord notifications for all system events
-- ✅ Configurable alert thresholds
+  - ✅ Temperature logging to CSV file
-- ✅ Automated AC control with temperature swing logic
+  - ✅ Configurable alert thresholds
-- ✅ Relay control via opto-coupler for 110V AC
+  - ✅ Exception recovery (system won't crash permanently)
-- 🚧 Humidity monitoring (planned)
+  - ✅ Graceful shutdown with Ctrl+C
-- 🚧 Soil moisture monitoring (planned)
+
-- 🚧 Additional relay control for fans, heaters (planned)
+- **Climate Control**
+  - ✅ Automated AC control with temperature swing logic
+  - ✅ Automated heater control with separate swing settings
+  - ✅ Short-cycle protection for both AC and heater
+  - ✅ Dual relay control via opto-coupler for 110V AC
+  - ✅ Mutual exclusion (AC and heater never run simultaneously)
+
+- **Scheduling System**
+  - ✅ 4 configurable time-based schedules per day
+  - ✅ Each schedule sets different AC/heater targets
+  - ✅ Automatic mode with schedule following
+  - ✅ Temporary hold mode (auto-resumes after configurable time)
+  - ✅ Permanent hold mode (manual control until restart)
+  - ✅ Schedule configuration persists through reboots
+  - ✅ Hold modes reset to Automatic on restart (safety feature)
+
+- **Web Interface**
+  - ✅ Real-time temperature display
+  - ✅ AC/Heater status indicators
+  - ✅ Manual temperature override
+  - ✅ Schedule editor (4 time slots)
+  - ✅ Mode control buttons (Automatic/Temp Hold/Perm Hold)
+  - ✅ Countdown timer for temporary holds
+  - ✅ Mobile-responsive design
+  - ✅ Auto-refresh dashboard (30 seconds)
+
+- **Planned Features**
+  - 🚧 Humidity monitoring (DHT22/SHT31)
+  - 🚧 Soil moisture monitoring
+  - 🚧 Additional relay control for fans, grow lights
 
 ## Quick Start
 
@@ -27,9 +56,9 @@ This project automates garden monitoring using a Raspberry Pi Pico W with temper
 **Required Components:**
 
 - Raspberry Pi Pico W
-- DS18B20 temperature sensors (waterproof recommended)
+- 2x DS18B20 temperature sensors (waterproof recommended)
 - 4.7kΩ resistor (pull-up for 1-Wire bus)
-- Opto-coupler relay module (3.3V logic, 110V AC rated)
+- 2-channel opto-coupler relay module (3.3V logic, 110V AC rated)
 - Momentary button (optional, for easy reset)
 
 See the [Items Needed Wiki](https://gitea.rcs1.top/sickprodigy/Auto-Garden/wiki/Items-Needed-for-the-Project) for full parts list.
@@ -49,27 +78,32 @@ Yellow (Data)  →  GP10 (Inside) - Pin 14
 Add 4.7kΩ resistor between Data line and 3.3V
 ```
 
-**⚠️ Important:** The 4.7kΩ pull-up resistor is **required** for reliable 1-Wire communication. While it may work without it occasionally, you'll experience intermittent failures, communication errors, and unreliable readings.
+**⚠️ Important:** The 4.7kΩ pull-up resistor is **required** for reliable 1-Wire communication.
 
-**Opto-Coupler Relay Module:**
+**2-Channel Opto-Coupler Relay Module:**
 
 ```text
 Low Voltage Side (Pico):
-GP15 (Pin 20)  →  IN (Signal)
+GP15 (Pin 20)  →  IN1 (AC Control Signal)
+GP14 (Pin 19)  →  IN2 (Heater Control Signal)
 3.3V (Pin 36)  →  VCC
 GND            →  GND
 
-High Voltage Side (AC Unit):
+High Voltage Side - Relay 1 (AC Unit):
 NO (Normally Open)  →  AC Control Wire 1
 COM (Common)        →  AC Control Wire 2
+
+High Voltage Side - Relay 2 (Heater):
+NO (Normally Open)  →  Heater Control Wire 1
+COM (Common)        →  Heater Control Wire 2
 ```
 
 **Note:** Most opto-coupler modules work with standard logic:
 
-- `relay.on()` = relay energized (NO closes) = AC ON
+- `relay.on()` = relay energized (NO closes) = Device ON
-- `relay.off()` = relay de-energized (NC closes) = AC OFF
+- `relay.off()` = relay de-energized (NC closes) = Device OFF
 
-If your AC behavior is inverted (turns on when it should be off), your module may be active LOW—see troubleshooting section.
+If behavior is inverted, your module may be active LOW—see troubleshooting.
 
 **Optional Reset Button:**
 
@@ -77,8 +111,6 @@ If your AC behavior is inverted (turns on when it should be off), your module ma
 RUN pin  →  Button  →  GND
 ```
 
-Pressing button grounds RUN and resets the Pico.
-
 ### 3. Software Setup
 
 **Install MicroPython:**
@@ -89,7 +121,7 @@ Pressing button grounds RUN and resets the Pico.
 
 **IDE Setup:**
 
-- Recommended: VS Code with [MicroPico extension](https://marketplace.visualstudio.com/items?itemName=paulober.pico-w-go) by paulober
+- Recommended: VS Code with [MicroPico extension](https://marketplace.visualstudio.com/items?itemName=paulober.pico-w-go)
 - Alternative: Thonny IDE
 
 ### 4. Configuration
@@ -105,7 +137,7 @@ secrets = {
 }
 ```
 
-**Configure sensors and AC in `main.py`:**
+**Sensor Configuration in `main.py`:**
 
 ```python
 # Sensor configuration
@@ -123,17 +155,33 @@ SENSOR_CONFIG = {
         'alert_low': 68.0
     }
 }
-
-# AC Controller options
-relay_pin = 15
-min_run_time = 300      # Minimum 5 minutes run time
-min_off_time = 180      # Minimum 3 minutes off time
-
-# AC Monitor options
-target_temp = 75.0      # Target temperature in °F
-temp_swing = 2.0        # ±2°F swing (AC on at 77°F, off at 73°F)
 ```
 
+**Default Climate Settings (auto-saved to config.json):**
+
+```python
+# Default config (created on first boot)
+{
+    "ac_target": 77.0,           # AC target temperature (°F)
+    "ac_swing": 1.0,             # AC turns on at 78°F, off at 76°F
+    "heater_target": 72.0,       # Heater target temperature (°F)
+    "heater_swing": 2.0,         # Heater turns on at 70°F, off at 74°F
+    "temp_hold_duration": 3600,  # Temporary hold lasts 1 hour (3600 seconds)
+    "schedule_enabled": true,    # Schedules active by default
+    "schedules": [               # 4 time-based schedules
+        {
+            "time": "06:00",
+            "name": "Morning",
+            "ac_target": 75.0,
+            "heater_target": 72.0
+        },
+        # ... 3 more schedules
+    ]
+}
+```
+
+All settings can be changed via the web interface and persist through reboots.
+
 ### 5. Upload & Run
 
 Upload all files to your Pico:
@@ -142,190 +190,296 @@ Upload all files to your Pico:
 /
 ├── main.py
 ├── secrets.py
+├── config.json              # Auto-generated on first boot
 └── scripts/
-    ├── air_conditioning.py
+    ├── air_conditioning.py   # AC/Heater controller classes
     ├── discord_webhook.py
     ├── monitors.py
     ├── networking.py
-    └── temperature_sensor.py
+    ├── scheduler.py          # Schedule system with hold timer
+    ├── temperature_sensor.py
+    └── web_server.py         # Web interface
 ```
 
-The Pico will auto-start `main.py` on boot.
+The Pico will auto-start `main.py` on boot and be accessible at **<http://192.168.x.x>**
 
 ## Project Structure
 
 ```text
 Auto-Garden/
-├── main.py                      # Entry point, configuration, monitor setup
+├── main.py                      # Entry point, configuration, system initialization
 ├── secrets.py                   # WiFi & Discord credentials (gitignored)
 ├── secrets.example.py           # Template for secrets.py
+├── config.json                  # Persistent configuration (auto-generated)
 └── scripts/
-    ├── air_conditioning.py      # AC controller with short-cycle protection
+    ├── air_conditioning.py      # AC & Heater controllers with short-cycle protection
     ├── discord_webhook.py       # Discord notification handling
     ├── monitors.py              # Monitor base class & implementations
     ├── networking.py            # WiFi connection management
-    └── temperature_sensor.py    # DS18B20 sensor interface
+    ├── scheduler.py             # Schedule system with temporary/permanent hold modes
+    ├── temperature_sensor.py    # DS18B20 sensor interface
+    └── web_server.py            # Web interface for monitoring and control
 ```
 
 ## How It Works
 
 ### Temperature Monitoring
 
-- **Every 10 seconds:** Check temperatures, send alerts if out of range
+- **Every 10 seconds:** Check temperatures
-- **Every 30 seconds:** Regular temperature reports to Discord + log to file
+- **Every 30 seconds:** Send temperature reports to Discord + log to CSV
+- **Instant alerts:** High/low temperature warnings to separate Discord channel
 
-**Discord Channels:**
+**Discord Notifications:**
 
-- `discord_webhook_url`: Regular temperature updates, connection status
+- `discord_webhook_url`: Regular updates, status changes, system events
 - `discord_alert_webhook_url`: Critical temperature alerts (Inside sensor only)
 
-### AC Control Logic
+**Example Discord Messages:**
 
-- **Every 30 seconds:** Check inside temperature and decide AC state
+```text
-- **Temperature swing:** Creates a "dead band" to prevent rapid cycling
+📊 Inside: 75.2°F | AC: OFF | Heater: OFF
-  - Example: Target 75°F with 2°F swing
+📊 Outside: 68.5°F | AC: OFF | Heater: OFF
-  - AC turns **ON** when temp > 77°F
+🔥 Inside temp HIGH: 81.0°F
-  - AC turns **OFF** when temp < 73°F
+Schedule 'Morning' applied - AC: 75°F, Heater: 72°F
-  - Between 73-77°F: maintains current state
+⏸️ HOLD Mode - Manual override: AC: 77F +/- 1F | Heater: 72F +/- 2F
+⏰ Temporary hold expired - Automatic mode resumed
+```
+
+### Climate Control Logic
+
+**AC Control:**
+
+- Target: 77°F with 1°F swing
+- AC turns **ON** when temp > 78°F (77 + 1)
+- AC turns **OFF** when temp < 76°F (77 - 1)
+- Between 76-78°F: maintains current state (dead band prevents cycling)
+
+**Heater Control:**
+
+- Target: 72°F with 2°F swing
+- Heater turns **ON** when temp < 70°F (72 - 2)
+- Heater turns **OFF** when temp > 74°F (72 + 2)
+- Between 70-74°F: maintains current state
 
 **Short-Cycle Protection:**
 
-- Minimum run time (default 5 min) prevents AC from turning off too quickly
+- Minimum run time: 30 seconds (prevents rapid off)
-- Minimum off time (default 3 min) protects compressor from rapid restarts
+- Minimum off time: 5 seconds (protects compressor/heater elements)
+- AC and heater never run simultaneously (mutual exclusion)
+
+### Scheduling System
+
+**Automatic Mode (Default):**
+
+- Schedules apply at configured times (e.g., 06:00, 12:00, 18:00, 22:00)
+- AC and heater targets update automatically
+- System follows the most recent schedule until next one applies
+
+**Temporary Hold Mode:**
+
+- Activated by manual temperature changes or "⏸️ Temp Hold" button
+- Pauses schedules for configurable duration (default: 1 hour)
+- Web UI shows countdown timer: "45 min remaining"
+- Auto-resumes to Automatic mode when timer expires
+- Can be manually resumed with "▶️ Resume" button
+
+**Permanent Hold Mode:**
+
+- Activated by "🛑 Perm Hold" button
+- Completely disables schedules (manual control only)
+- Stays disabled until "▶️ Enable Schedules" clicked or Pico reboots
+- No countdown timer
+
+**Hold Reset on Boot:**
+
+- All hold modes reset to Automatic on Pico restart/power cycle
+- Safety feature ensures schedules always resume after power loss
+- Temperature targets, swing values, and schedules persist
+
+### Web Interface
+
+Access at **<http://192.168.x.x>**
+
+**Dashboard (auto-refreshes every 30s):**
+
+- Current inside/outside temperatures
+- AC/Heater status indicators
+- Next scheduled temperature change
+- Current mode banner with countdown (if in Temporary Hold)
+- Manual temperature override form
+- Mode control buttons
+
+**Schedule Editor:**
+
+- Configure 4 time-based schedules
+- Set time (HH:MM format), name, AC target, heater target for each
+- Form validation (prevents heater > AC, invalid times)
+- No auto-refresh (prevents losing edits)
+
+**Mode Control:**
+
+- **✅ Automatic Mode:** Schedules active, temps adjust based on time
+  - Buttons: [⏸️ Temp Hold] [🛑 Perm Hold]
+- **⏸️ Temporary Hold:** Manual override with countdown timer
+  - Buttons: [▶️ Resume] [🛑 Perm Hold]
+- **🛑 Permanent Hold:** Manual control only, schedules disabled
+  - Button: [▶️ Enable Schedules]
 
 ### WiFi Monitoring
 
-- **Every 5 seconds:** Check WiFi connection status
+- **Every 5 seconds:** Check WiFi connection
 - **LED Indicator:**
-  - Slow blink (1 sec on/off): Connected
+  - Solid ON: Connected
-  - Fast blink (0.2 sec): Disconnected
+  - Blinking: Reconnecting
-- **Auto-reconnect:** Attempts reconnection every 60 seconds if disconnected
+- **Auto-reconnect:** Attempts every 60 seconds if disconnected
+- **Static IP:** Always accessible at <http://192.168.x.x>
 
 ## Temperature Logs
 
 Logs are saved to `/temp_logs.csv` on the Pico:
 
 ```csv
-2025-11-05 14:30:00,Inside,28000012,72.50
+2025-11-08 14:30:00,Inside,28000012,72.50
-2025-11-05 14:30:00,Outside,28000034,45.30
+2025-11-08 14:30:00,Outside,28000034,45.30
 ```
 
 Format: `timestamp,location,sensor_id,temperature_f`
 
 ## Customization
 
-All configuration is centralized in `main.py`:
+### Via Web Interface (Recommended)
 
-**Sensor Settings:**
+- Navigate to <http://192.168.x.x>
+- Adjust AC/Heater targets and swing values
+- Edit schedules (times, names, targets)
+- Settings persist through reboots
 
-- Pin assignments
+### Via config.json
-- Alert thresholds (high/low)
-- Labels
 
-**AC Settings:**
+```json
+{
+    "ac_target": 77.0,
+    "ac_swing": 1.5,              // Change swing range
+    "heater_target": 72.0,
+    "heater_swing": 2.5,
+    "temp_hold_duration": 7200,   // 2 hours (in seconds)
+    "schedules": [ /* ... */ ]
+}
+```
 
-- Relay pin
+### Via main.py (Advanced)
-- Target temperature
-- Temperature swing (dead band)
-- Minimum run/off times
 
-**Monitor Intervals:**
+```python
+# Relay pins
+ac_relay_pin = 15
+heater_relay_pin = 14
 
-- Temperature check/report intervals
+# Sensor pins
-- WiFi check interval
+SENSOR_CONFIG = {
-- AC control interval
+    'inside': {'pin': 10, ...},
+    'outside': {'pin': 11, ...}
+}
+
+# Monitor intervals
+check_interval=10      # Temperature check frequency
+report_interval=30     # Discord report frequency
+```
 
 ## Safety Notes
 
 ⚠️ **High Voltage Warning:**
 
-- Opto-couplers isolate the Pico from AC voltage
+- Opto-couplers isolate Pico from AC voltage
-- Never connect GPIO pins directly to 110V AC
+- Never connect GPIO directly to 110V AC
-- Ensure your opto-coupler module is rated for your voltage
+- Ensure relay module is rated for your voltage
-- Test relay switching with a multimeter before connecting AC
+- Test with multimeter before connecting AC loads
-- Consider hiring a licensed electrician if uncomfortable with AC wiring
+- Consider hiring licensed electrician if uncomfortable
 
-**Compressor Protection:**
+**Compressor/Heater Protection:**
 
-- Always use minimum run/off times (defaults are safe)
+- Always use minimum run/off times
-- Minimum 3 minutes off time protects compressor bearings
+- Minimum 5s off time protects compressor bearings
-- Minimum 5 minutes run time prevents short cycling
+- Minimum 30s run time prevents short cycling
+- AC and heater mutual exclusion prevents simultaneous operation
 
-## Future Expansion
+**System Reliability:**
 
-### Planned Features
+- Exception recovery prevents permanent crashes
-
+- Graceful shutdown (Ctrl+C) safely turns off AC/heater
-- **Humidity Sensors:** DHT22 or SHT31 for air humidity monitoring
+- Hold modes reset on reboot (schedules always resume)
-- **Soil Moisture:** Capacitive sensors for plant watering automation
+- Static IP ensures web interface always accessible
-- **Additional Relays:** Control for fans, heaters, grow lights
-- **Smart Ventilation:** Auto-open windows when outside air is optimal
-- **Light Monitoring:** LDR or BH1750 for day/night cycles
-
-### Adding More Sensors
-
-To add a new temperature sensor:
-
-First Add to `SENSOR_CONFIG` in `main.py`:
-
-```python
-'greenhouse': {
-    'pin': 12,
-    'label': 'Greenhouse',
-    'alert_high': 90.0,
-    'alert_low': 50.0
-}
-```
-
-Second Add a `TemperatureMonitor` to the monitors list:
-
-```python
-TemperatureMonitor(
-    sensor=sensors['greenhouse'],
-    label=SENSOR_CONFIG['greenhouse']['label'],
-    check_interval=10,
-    report_interval=30,
-    alert_high=SENSOR_CONFIG['greenhouse']['alert_high'],
-    alert_low=SENSOR_CONFIG['greenhouse']['alert_low'],
-    log_file="/temp_logs.csv",
-    send_alerts_to_separate_channel=False
-)
-```
 
 ## Troubleshooting
 
+**Web interface not loading:**
+
+- Verify Pico is connected to WiFi (LED should be solid)
+- Check static IP is <http://192.168.x.x>
+- Look for "Web Interface: <http://192.168.x.x>" in serial console
+- Try accessing from same WiFi network
+
 **No temperature readings:**
 
-- Check 4.7kΩ pull-up resistor is connected between data line and 3.3V
+- Check 4.7kΩ pull-up resistor between data line and 3.3V
 - Verify sensor wiring (VDD to 3.3V, not 5V)
 - Check GPIO pin numbers in `SENSOR_CONFIG`
-- Run `sensor.scan_sensors()` to detect connected sensors
+- Run `sensor.scan_sensors()` in REPL to detect sensors
 
 **WiFi not connecting:**
 
 - Verify SSID/password in `secrets.py`
 - Check 2.4GHz WiFi (Pico W doesn't support 5GHz)
-- Look for connection messages in serial console
+- LED should be solid when connected
-- LED should blink slowly when connected
+- Check serial console for connection status
 
 **Discord messages not sending:**
 
-- Verify webhook URLs are correct
+- Verify webhook URLs in `secrets.py`
 - Test webhooks with curl/Postman first
-- Check Pico has internet access
+- Check Pico has internet access (ping test)
+- Look for error messages in serial console
 
-**AC not switching:**
+**AC/Heater not switching:**
 
-- Verify relay pin number (default GP15)
+- Verify relay pin numbers (default GP15/GP14)
-- Test relay manually: `Pin(15, Pin.OUT).off()` should activate it
+- Test relay manually in REPL: `Pin(15, Pin.OUT).on()`
 - Check if module is active LOW or active HIGH
 - Ensure opto-coupler has 3.3V power
 - Look for LED on relay module (should light when active)
-- Verify minimum run/off times haven't locked out switching
+- Check minimum run/off times haven't locked out switching
 
-**AC behavior inverted:**
+**AC/Heater behavior inverted:**
 
-- Your opto-coupler is likely active LOW
+- Your opto-coupler is active LOW
-- In `air_conditioning.py`, swap `relay.on()` and `relay.off()` calls
+- In `air_conditioning.py`, swap `relay.on()` and `relay.off()` calls in both ACController and HeaterController classes
+
+**Schedules not applying:**
+
+- Check NTP time sync: "Time synced with NTP server" in serial
+- Verify schedule times in HH:MM format (24-hour)
+- Ensure "✅ Automatic Mode" is active (not in hold)
+- Check serial console for "Schedule Applied: [name]" messages
+
+**Temporary hold not auto-resuming:**
+
+- Check `temp_hold_duration` in config.json (in seconds)
+- Look for "⏰ Temporary hold expired" in serial console
+- ScheduleMonitor runs every 60 seconds, may take up to 1 min extra
+- Verify timer countdown appears in web UI banner
+
+**System keeps crashing:**
+
+- Check for recent code changes
+- Look for exception messages in serial console
+- System should auto-recover from most errors (5s pause, then retry)
+- If persistent, check memory usage with `gc.mem_free()`
+
+**Config changes not saving:**
+
+- Verify web form submissions redirect to dashboard/schedule page
+- Check for "Settings persisted to disk" in serial console
+- Ensure config.json has write permissions
+- Try manual edit of config.json and reboot
 
 ## Contributing