Add setup inverter

docs/application-help-screens/assert-location.md

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 # Setting Your Gateway Location
 

docs/application-help-screens/setup-inverter.md

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+
+# Inverter Setup Guide
+
+## Overview
+
+The inverter setup is a crucial step that enables your gateway to communicate with your solar inverter. This connection allows for:
+- Real-time power production monitoring
+- Performance analytics
+- Energy production verification
+- System health monitoring
+
+## Connection Methods
+
+### 1. Direct Connection (Modbus TCP)
+- Most modern inverters support this method
+- Uses standard Ethernet/WiFi connection
+- Requires inverter's IP address and port
+- Default port is usually 502
+
+### 2. Via RS485-to-Ethernet Converter
+- For inverters with only RS485 (Modbus RTU) support
+- Requires additional hardware
+- Converts serial communication to network protocol
+- Maintains compatibility with older inverters
+
+### 3. Via Modbus TCP Proxy
+- For inverters limited to single connections
+- Allows multiple devices to connect
+- Maintains existing monitoring setup
+- Requires proxy configuration
+
+## Setup Instructions
+
+1. **Select Your Inverter**
+   - Choose your inverter manufacturer from the list
+   - If not listed, check compatibility documentation
+   - Note: New inverters are regularly added
+
+2. **Connection Details**
+   - Enter the inverter's IP address
+   - Verify the port number (usually 502)
+   - Set the device address (typically 1)
+   - Test connection before saving
+
+3. **Configuration Verification**
+   - System will test the connection
+   - Verify data is being received
+   - Check for any communication errors
+   - Confirm proper readings
+
+## Common Settings
+
+### Default Ports
+- Modbus TCP: 502
+- SunSpec: 502
+- Custom: Check inverter manual
+
+### Device Addresses
+- Single inverter: Usually 1
+- Multiple inverters: 1-247
+- Check inverter documentation
+
+## Troubleshooting
+
+### Can't Find Inverter
+- Verify inverter is powered on
+- Check network connection
+- Ensure you're on the same network
+- Try scanning for devices again
+
+### Connection Failed
+- Verify IP address and port
+- Check firewall settings
+- Confirm inverter settings
+- Try power cycling the inverter
+
+### Data Not Updating
+- Check connection stability
+- Verify device address
+- Ensure proper protocol selection
+- Review inverter configuration
+
+## Need More Help?
+
+If you:
+- Don't see your inverter listed
+- Can't establish connection
+- Need technical assistance
+- Have compatibility questions
+
+Contact our support team through Discord or email.
+
+> Note: Keep your inverter manual handy during setup. Some manufacturers have specific requirements or settings that need to be enabled.