The hardware used in the current project are shown in the below figure
More details about components can be found in the URLs:
https://wiki.seeedstudio.com/Seeeduino-XIAO/
https://wiki.seeedstudio.com/Grove-Flame_Sensor/
The circuit diagram for sensing the fire and producing the alarm animation is shown in the below figure.
According to the schematic the circuit is designed and the components are interface to the Seeeduino XIAO MCU
Once the device is connected and programmed the system will detect the fire which is close to it and generate an alert with buzzer the same is shown in the following video: