As a recent owner of a second-hand Voron 2.4, I’ve been exploring how it works and optimizing its performance (someone may affectionately call “calibration hell”). Early on, I noticed a significant issue with the hotend temperature readings: upon powering on the machine, the hotend consistently reported a temperature 12 degrees Celsius below room temperature. This immediately indicated a problem and explained why my prints “could have been better”.

Setup analysis

My initial step involved inspecting the cables on the EBB42 toolboard (a common BigTreeTech toolboard for Voron printers), consulting its BTT documentation, and reviewing my Klipper configuration files. The discovery was a clear misconfiguration: the hotend thermistor was incorrectly connected to the TH0 port on the EBB42.

Git comes with lots of commands, you learn only a few of them and then you blame git because there’s something wrong, is this true? Well, I’ve written some git commands I use approximately every day.