Cartoghaper Probe temp

[jseparovic]

Happy New Year, everyone!

I’ve been troubleshooting an issue with my toolhead (BTT SB2200) causing the printer to stop mid-print. After some investigation, I found that the CAN tool board temperature was climbing to 85 °C during ASA prints, with the chamber temperature around 38-45 °C. The Cartographer probe was also reaching 80–85 °C under the same conditions. Interestingly, this problem does not occur when printing PLA.

After researching, I discovered this is a common issue in enclosed printers with high chamber temps. To mitigate it, I implemented a custom modification by adding an active cooling fan to the SB2200. The fan engages at 50 °C, and now the board runs at a stable 55–60 °C during prints.

I also removed my Eddy probe because it became unreliable at elevated temperatures. For the Cartographer probe, I modified the mounting bracket by adding ventilation slots, which reduced its operating temperature slightly. It now runs at 75–80 °C.

My question:
Is this temperature range acceptable for the Cartographer probe, or could it impact long-term reliability? The probe is mounted in the standard Stealthburner location. I’m considering additional cooling or possibly relocating the probe if necessary. Has anyone implemented cooling solutions or alternative mounting positions to address heat-related issues with this probe?

 

[Methos]

This FAQ seems to indicate that the Cartographer should be below 85C, I think this might be out of date as the V4 unit on sale now indicated it can handle 125C

TempFAQ

Mike

[Mac_A_Million96]

It’s probably a design issue with that version, which would explain why the V4 would specifically be designed to handle 125c, I currently use a Beacon Probe which is the same form factor and regularly see it reach temperatures of 110c when printing ABS / ASA

[lawson.brian]

I regularly see my cartographer mcu and coil (V3) in the high 90's C during the early part of the print and have not have any klipper disconnect issues (this is in usb mode). 

My toolhead is a nitehawk 36 (rev.3) and that also runs into the high 80's (RP2040 chip) and no issues (1,200 hours on SB & 36 variants and zero mcu disconnects with it).

I heard some issues with the BT2209 toolhead disconnecyts could be due to static build up? Don't quote me on this but worth researching.

 

[mvdveer]

7 hours ago, lawson.brian said:

I heard some issues with the BT2209 toolhead disconnecyts could be due to static build up? Don't quote me on this but worth researching.

You are correct and it recommended to earth/ground this toolhead board. See this excellent thread by @ChicagoKeri