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This! I recently had to rig something up in an emergency: Did a `pacman -S rpi-imager` since that's what Google says the kids use these days (it's new to me!),

This! I recently had to rig something up in an emergency: Did a `pacman -S rpi-imager` since that's what Google says the kids use these days (it's new to me!), selected the RPi4, selected the headless Armbian, gave it my ssh public key, entered WiFi credentials and hit go. Then realized I could not find that lovely 3A USB power supply, and couldn't get one since it was saturday night. Next I messed around with an old OrangePi just to realize they never updated the Armbian (even though I got the device tree into the Kernel!). Downloaded the ancient image from their Google Drive, got BalenaEtcher running again (its not in my repos) and then figured the SBC must be fried anyway. Luckily I remembered that I still had a RPi1 that was collecting dust and should work with any old USB charger. Checked `rpi-imager` and indeed, it supported that old thing! Created the SD card (config was still saved), grabbed an old USB WiFi adapter and powered the thing up. And it just worked :) The emergency was: My 20m USB extension cord with the zigbee coordinator failed after 2y, and I could not turn on a few of our lights. Using `usbip` I now forward it to the automation server from that RPi1 (I initially didn't think about the RPi1 since I wanted to run zigbee2mqtt on the device, but eventually found out about usbip). Bonus 1: I still have the spare RPi4 that I wanted to attach to the 3D printer because I could re-use the old one :) Bonus 2: I now know that rpi-imager has a ready-made Klipper image and I don't need to set it all up by hand. Next time I consider getting another SBC, it will be an RPi again.

deleted 3y ago
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ThatPlayer 3y ago
Well I just spent an hour trying to get my Orange Pi 4 working with the latest Armbian, and it turns out HDMI output has been broken on Armbian on this board for almost a year: https://forum.armbian.com/topic/26818-opi-4-lts-no-hdmi-output/ https://forum.armbian.com/topic/26818-opi-4-lts-no-hdmi-outp... I might end up just using it as a Klipper board too.
- archi42 3y ago
  I've rebuild part of my Delta the last few evenings and today it had it first print since ~1.5y: The humble pressure advance calibration cube for Klipper; but with PETG [which I couldn't print before, but was all I had left] on a new bed, with new glass surface, on self-designed & resin printed mounts, with higher speed than I previously used (100mm/s)... - with other words, I did expect it to just fail, but it worked reasonably well! Dimensional calibration is next, and I'm waiting for the accelerometer to add resonance compensation. This was a great decision! Created a USB stick for the RPi4 with Mainsail OS. No display necessary, just connected Ethernet (WiFi did not connect, didn't debug though). The printer setup was really easy, though I had to adjust the template configuration for my hardware modifications (mostly tmc2130). Most actual effort was in reworking parts of the hardware (remove case, solder new build plate, design and test the mounts, fix bad soldering that only caused half the heat plate to heat up [good bless thermal cameras!]). Overall, the UX has increased tremendously since I first heard about Klipper (IIRC Kevin just added delta support back then). I think the Mainsail UI has a huge impact on UX. Especially manual calibration of the delta kinematics with the Mainsail web UI is a delight. I scrapped getting piezo probes or stuff like that (for now).

deleted 3y ago

[deleted]

ThatPlayer 3y ago

Well I just spent an hour trying to get my Orange Pi 4 working with the latest Armbian, and it turns out HDMI output has been broken on Armbian on this board for almost a year: https://forum.armbian.com/topic/26818-opi-4-lts-no-hdmi-output/ https://forum.armbian.com/topic/26818-opi-4-lts-no-hdmi-outp... I might end up just using it as a Klipper board too.

archi42 3y ago
I've rebuild part of my Delta the last few evenings and today it had it first print since ~1.5y: The humble pressure advance calibration cube for Klipper; but with PETG [which I couldn't print before, but was all I had left] on a new bed, with new glass surface, on self-designed & resin printed mounts, with higher speed than I previously used (100mm/s)... - with other words, I did expect it to just fail, but it worked reasonably well! Dimensional calibration is next, and I'm waiting for the accelerometer to add resonance compensation. This was a great decision! Created a USB stick for the RPi4 with Mainsail OS. No display necessary, just connected Ethernet (WiFi did not connect, didn't debug though). The printer setup was really easy, though I had to adjust the template configuration for my hardware modifications (mostly tmc2130). Most actual effort was in reworking parts of the hardware (remove case, solder new build plate, design and test the mounts, fix bad soldering that only caused half the heat plate to heat up [good bless thermal cameras!]). Overall, the UX has increased tremendously since I first heard about Klipper (IIRC Kevin just added delta support back then). I think the Mainsail UI has a huge impact on UX. Especially manual calibration of the delta kinematics with the Mainsail web UI is a delight. I scrapped getting piezo probes or stuff like that (for now).