temp errors on hot end

[native wadi]

Just had a 2nd print fail 11hrs in from the hot end exceeding temp. I've done PID tuning on the hot end and wondering what might be causing this problem 😦

[native wadi]

I found about where it failed in the klippy.log, but it doesn't look like the pwm did anything unusual...

Also to note, I'm using the Phaetus Rapido UHF hot end and an Octopus 1.1 MCU

[unreal bane]

If you hover over the graph where it spikes and where it's steady it should show you a percentage - wondering what those values are?

I had to replace my Rapido heat block recently but for different reasons, one of the wires attached to the ceramic block was loose and eventually fell off when removing the silicon sock...

Good news is Fabreeko stocks them, and it's like a $30 part...

[native wadi]

I just saw another spike in my current print when it was at 265 (specified temp) and it looks like it says 64% but then dropped down pretty quickly

[native wadi]

I'd probably try to do a warranty swap before I buy another part lol

[unreal bane]

well, it's a head scratcher... I initially thought that it could be thermistor related... But then thought it would manifest as a dip in extreuder temperature graph...

[native wadi]

Agreed. If there was more of a temp drop, I could understand, but it seems like it's spiking the pwm even though it's pretty close to the correct temp

[void forge]

Adding on to this, click the icon on the left and check Show PWM-power in chart to always see the PWM info in the chart

[native wadi]

So, I was watching when the spikes were happening and I fiddled with the JST connector for the thermistor and I think I may need to rewire the end coming from the hot end. I'll do that tomorrow and confirm, but making it so that it's not dangling as much seems to have helped a lot. 😬

[native wadi]

tenatively, I've not had any super crazy spikes since I re-crimped the JST connector for the thermistor 🤞