You can integrate additional sensors supported by Klipper into the temperature graph in Mainsail.
Append the following section to your printer.cfg:
[temperature_sensor raspberry_pi]
sensor_type: temperature_host
min_temp: 10
max_temp: 100
Append the following section to your printer.cfg:
[temperature_sensor mcu_temp]
sensor_type: temperature_mcu
min_temp: 0
max_temp: 100
{% hint style="info" %} For more information on this topic and how to add additional sensors, please refer to Klipper documentation. {% endhint %}