Recent content by erik.zweigle

If you have a Mornsun 200w PSU then change it to Meanwell brand. Your symptoms sound identical to mine.

I removed the 200W Mornsun PSU and installed a 350W Meanwell PSU. I also attached a power meter between the wall and power cord so I could visualize the max power consumed. Peak of 168W observed with all fans, heaters, motors, displays, LEDs running. Three successful consecutive prints with...

Still fails at 60W.

I commented out this 60W limitation a while ago so that the bed would heat up quicker at full 100W. I am going to set the bed max_power to 0.6 of 100W and see how that goes for the next few days until the new power supply arrives...

Even with the HDMI and Display power cables unplugged I cannot get through a complete print. I moved one USB A connector to a neighboring port this time for a trial too. Still failed. More evidence that it isn't insufficient power to the Pi5, but rather insufficient power to the SKR Pico and...

The intermittent shutdowns persisted. Exchanged the Pi4B for a Pi5. Monitored the syslog with sudo journalctl -f Caught the failure live as it was chugging along catching Timelapse images. USB Disconnect is the culprit. I find it extremely unlikely for both USB 3 and USB 4 to disconnect...

Three consecutive successful prints with the HDMI cable and Screen power cable unplugged. Revisiting the display vendor's wiki it looks like I never added these three lines to my /boot/firmware/config.txt file. hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 60 6 0 0 0 The display draws 400mA...

Nope. Still mcu timeout. Maybe I'll try removing the HDMI display next. I don't understand how it can print for 20, 40, 90 minutes and then crash. It is never the same amount of time.

I got to thinking that when I connected the TX/RX pins from SKR PICO to the Pi4B I also attached a GND pin. Looking at the other GPIO pins I saw another GND/5V pair going to the 5V PSU. That PSU shares a GND to the frame, as does the 24V PSU. The Umbilical PCB has +/- to the 24V PSU, but no...

I removed the USB cable entirely and switched to UART between SKR PICO and RASPI4B. Got 90% through a benchy and then had a lost communication with MCU error. Chat GPT suggested changing the baud rate - and Klipper docs say specifically DO NOT change the baud rate. Either way, it definitely...

Nope. Still lost communication. I guess it is time to try a pi 5.

Nope, front door open and lid ajar still had lost communication. Going to disable the auxiliary fans next. Who knows, maybe the SKR Pico has some board design issue when all fans are on.

Camera was not the problem either apparently. It just lost communication pretty immediately on layer 3. Makes me think it is the heat. I'm going to print the next job with the front door open despite it being a risk for the ABS to curl from the bed.

'Lost communication with MCU'. Looks like the new USB cable didn't fix it. Going to try shutting off CrowsNest.

I have exchanged the USB cable and tested just two prints. My MCU disconnect failure is random and I need to test it more. Haven't had the time. I have been leaning on my larger machine to do all the jobs lately. I have a Fabreeko <LDO Kit 0.2 S1> that came with a Raspi 4B MCU. To that I've...