Installing Genmon Generac Generator Monitor on Raspberry Pi

Summary Steps

1. Setup Raspberry Pi
2. Connect Generator Wiring
3. Access the genmon web application

1. Setting up your Raspberry Pi

• Install Raspberry Pi Imager http://Setting up your Raspberry Pi
• Install Raspberry Pi OS with desktop 
• Setup Your Pi and Serial Port. Configure settings and connect to network using GUI
• enable serial port with Preferences –> Raspberry Pi Configuration –> Interfaces –> Serial Port –> Enable
• Install genmon software using script or manually

2. Connect Generator Wiring

The Raspberry Pi running genmon requires a connection to the RS-232 signals on the generator controller’s MODBUS interface.

• Hardware instructions here
• Pi HAT (Hardware Attached on Top) here to connect the pi to the RS-232 board
• Disconnect the Generac Wifi module and connect the genmon Raspberry Pi in Port 1

3. Access the genmon web application

http://192.168.3.102:8000/

4. Integrate with homeassistant

Raspberry Pi References

• https://www.raspberrypi.org/help/
• Other install options here