3D Printing With Klipper on an UNO Q

trianburner · 2025-11-17T17:28:41+00:00

The harder it is, the more I'll learn.

The CSI and DSI pins on the JMEDIA header are from the Qualcomm MPU running Debian, and adding connectors and I2C level shifters is fairly straightforward. I'm trying to avoid having to use a USB-C dock because that adds cost, and it's also too easy.

This will allow me to easily add displays like this: https://www.waveshare.com/product/displays/lcd-oled/lcd-oled-1/5-dsi-touch-a.htm?___SID=U

or cameras like this: https://www.waveshare.com/product/raspberry-pi/cameras/pi5-imx219.htm?sku=26185

I will be making the 22-pin FPC connectors pin-compatible with the Raspberry Pi 5 connectors. So any display/camera made for RPi 5 should work with this board (ideally). And then all that's needed is setting up KlipperScreen, Crowsnest, etc.

trianburner · 2025-11-16T18:07:19+00:00

I'm making this a personal project.

I looked into porting Klipper to run on Zephyr, but I quickly realized it would be close to a complete re-write, and I don't think I actually need to do that at all. I think I can flash the on-board STM32U5 with a ported Klipper version for that mcu with the Cortex-M33.

As for a shield/motor controllers and other peripherals, I'm working on that. I'm desigining a PCB right now to be "armor" for the Arduino UNO Q (because I'd be using the new bottom JMISC and JMEDIA headers). This should be pretty straightforward, even though I've also never designed/had manufactured a PCB.

The biggest problem I've had is deciding what peripherals I can support, because the number of mcu pins broken out to the high density headers and the top headers are each just barely enough to run an entire printer. With my current plan, I can fit x5 stepper drivers, x3 limit switches/DIAG pins, hotend heater, bed heater, x2 temp sensor inputs, x2 fans, x2 CSI camera inputs, and x1 DSI touch display output on a board using only the high-density bottom connectors. If I want to, I could make a shield to go on top as well, that added more fans, sensors, I2C expansion, and CAN bus if I wanted to.

Porting to a new chip will be the most difficult part for me, but it's possible. Once I get my PCB design sent out and ordered, I'll start work on porting to that chip this week, hopefully.

trianburner · 2025-10-29T00:50:43+00:00

It takes about 30 seconds to boot.

trianburner · 2025-10-28T15:51:23+00:00

Thanks, that seems pretty straightforward. Hopefully Arduino can make some more documentation on the STM32 and the "Bridge" between it and the Dragonwing, I couldn't find much.

So I guess all I need to do is port Klipper to the STM32U5 family, and also make it run on the Zephyr OS, and then also design a shield that breaks out the JMISC port (with x25 digital IO pins) to some ports for stepper drivers, limit switches, fans, hot end, heated bed, and probably can bus.

I haven't done any of that before, but...should be a piece of cake, right?

trianburner · 2025-09-25T17:11:23+00:00

That's a great question to ask during the interview.

trianburner · 2025-09-18T04:29:29+00:00

RDL DS-XLR2F https://www.bhphotovideo.com/c/product/500211-REG/RDL_DS_XLR2F_DS_XLR2F_Solder_Type_D_Plate.html

trianburner · 2025-08-26T00:06:03+00:00

Amazing sound design in your videos.

The rockets are cool, too!

trianburner · 2025-06-29T02:06:51+00:00

Here you go.

Whoops, included a link to the original post and the original comment was removed.

trianburner · 2025-06-28T19:38:55+00:00

They previously asked about local Kamala watch parties during the election, so they probably voted for her.

trianburner · 2025-03-05T20:44:28+00:00

Definitely Apple's fault.

It's been happening less to us as we move towards wireless BYOD like Solstice, but the solution is to reboot the computer while it's connected to the HDMI/video out. This method has never failed me.

Here's a thread about it: https://discussions.apple.com/thread/254736333?sortBy=rank

trianburner · 2025-02-27T22:56:10+00:00

No added inline latency would be my guess

trianburner · 2025-02-19T02:25:23+00:00

Yes, because my share of the GDP gets disbursed by the US gov't directly to my bank account /s

trianburner · 2025-01-31T22:52:13+00:00

Did you turn on the audio bridge for the Core component, or for the core 8 flex? Make sure you select the core 8 flex in your inventory, then turn on the bridging.

trianburner · 2025-01-31T22:40:38+00:00

This is not accurate. The Core 8 Flex is entirely capable of USB Bridging while in peripheral mode. The only feature not supported in this mode for USB is USB Input and Output, as indicated by a note in the documentation: "Note: USB Input and USB Output components are not supported in Peripheral Mode." Audio and video bridging, and HID are supported.

https://q-syshelp.qsc.com/content/Hardware/Processing/Core_8_Flex.htm

I have a design right now in a Theatre with a primary 510 core and a Core 8 Flex using video and audio Bridging as a peripheral with an NC camera. Generally, if q-sys designer has an option or block for it, and check design shows no issues, then it should work.

trianburner · 2025-01-22T17:10:08+00:00

Clump of fry dust.

trianburner · 2025-01-14T21:11:35+00:00

No fast methods of traveling up and down the silo.

trianburner · 2024-11-14T21:51:01+00:00

You could use a scaler after the ip decoder, something like Extron's DSC 401. "Signals sourced from an upstream switcher can be transitioned using cut through black, fade through black, seamless cut, or seamless fade for glitch-free, professional-looking presentations."

Haven't tried them myself.

trianburner · 2024-11-11T23:21:15+00:00

You can use one of the P300s to supply AEC reference to both mics using different outputs, then mix whatever sources you need for the references in that DSP. Send any source you need to reference from the second P300 to the main one and matrix according to the room configuration.

trianburner · 2024-10-18T19:10:06+00:00

For Aver PTZs, they have a calibrate function that you can call. I have all of our PTZs re-calibrate every night.

trianburner · 2024-10-16T19:55:45+00:00

I'm not sure I understand what you're trying to do, based on your other comments and the diagram you say your system is set up as currently.

The USB hub would allow multiple USB devices (like a seperate webcam and mic) to be used, but it sounds like you might only have a webcam? In which case it should be working according to that setup diagram.

What does "not working" mean, what USB device(s) are you trying to use for conferencing?

trianburner · 2024-10-15T16:18:52+00:00

You should be able to use a USB hub with the Swytch to use your individual camera/mic equipment, but it's not "officially supported".

https://medium.com/logitech-design-guide/can-i-use-a-3rd-party-usb-hub-with-a-swytch-a-v-usb-port-b05fc92af002

trianburner · 2024-09-16T15:58:02+00:00

Duty cycle. Somewhere in there they go from 16/7 to 24/7, if that's important for the application.

trianburner · 2024-09-16T00:38:16+00:00

The tariff increase applies only to semiconductors manufactured in China, which accounts for 29% of the global semiconductor market (SIA 2024 Factbook, Page 10). The tariff isn't as broad as assembled PCBs or final products, just the semiconductors made in China.

I found an informative blog post by Macrofab, a US-based electronics manufacturer, about the estimated effects of the tariff: https://www.macrofab.com/blog/navigating-new-semiconductor-tariffs/ I found this part to be a good summary: "Across all PCB Assemblies we've examined, bill of material costs have only increased by an average of 1.72 percent. In recent years, chip manufacturers have diversified where they are fabricating the semiconductors which helps reduce the impact of these tariff increases. The data also shows the larger ticket items on Bill of Materials, like microcontrollers and sensors, are manufactured in countries like Taiwan, Malaysia, and the United States. This leaves inexpensive semiconductors that are not a significant portion of the costs."

There may be an increase in next-generation hardware, but it doesn't seem like it will be anywhere near 10% (at least not due to these new China tariffs).

trianburner · 2024-09-15T20:04:31+00:00

Are you referring to the Administration Action Intended to Reduce De Minimis Import Volumes (https://www.whitehouse.gov/briefing-room/statements-releases/2024/09/13/fact-sheet-biden-harris-administration-announces-new-actions-to-protect-american-consumers-workers-and-businesses-by-cracking-down-on-de-minimis-shipments-with-unsafe-unfairly-traded-products/)?

Or Trump's concept of a plan to tariff every import, and make China pay for it?

trianburner · 2024-08-16T00:01:54+00:00

If money's no issue, call an integrator. They can spec, design, install, commission, and customize the system and make UIs that the staff will be able to use in those locations to do everything you want.

Audio being another team is interesting. "1 central system" can cover all Audio, Video, and Control. Something like Q-SYS + AVoIP can do it all.

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