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Fixing 90+ Second Boot Stalls on Orange Pi 5 with the Rockchip BSP Kernel
If your Orange Pi 5 (or any RK3588 board running a Rockchip BSP kernel) takes roughly two minutes to boot, with no console output and no obvious failures, this post is for you. The fix is a one-line cmdline change. Skip to the bottom if you just want it. The symptom Boot would hang for…
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Leveling the Elegoo Saturn 4 build plate
Tap, tap, is this thing on? I have far too many project posts languishing in the queue. Here is one. These are little washers that go on the screws of the Saturn 4 build plate in order to level it by pre-compressing the springs. The “automatic leveling” can’t adjust for lateral tilt and I’m not…
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Printed battery cover for FrSky Taranis
I normally use a LiFe 3S for the radio and my last one lasted about 10 years before puffing so bad that I couldn’t use it any more. I needed a quick replacement and wanted to use 18650 cells but they won’t fit in the stock battery compartment. Enter the 3D printer once again to…
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3D printed NPT Industrial to tube couplings
Various fittings to convert 1/4″ NPT Industrial Quick-Disconnect to low-pressure tubes 5/16″ and 3/16″. Both male and female tube fittings are provided. Designed based on official mil-spec MIL-C-4109F and ANSI standard B1.20.1. Shown with Tygon 5/16″ fuel tube (yellow) and 3/16″ aquarium “airline” tubing. I use these to feed air for various low-pressure applications like…
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3D printed tip for Apple iPad Pencil clones
Replacement tip for an Apple iPad Pencil 1 clone. This will not fit a real Apple Pencil as it uses a different design and it may only fit some clones, I have no idea. This one can be tricky to print because it’s so small. Use the thinnest layer height your printer can do and…
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3D printed feet for HP 8116A
These are OEM-style rear feet for the HP 8116A function generator. I printed the hole caps in a flexible but the original HP caps are hard plastic. Your choice. I recommend adding a modifier block to change the perimeters or infill to 100% around where the screws clamp down to provide strength. I may create…
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3D Printed Flux Syringe Parts
Sometimes I find myself with an Amtech or similar flux syringe barrel but no plunger or hub/needle so I made my own. These parts fit a 10cc barrel. The plunger and hub are printed in eSun PLA+ and the seal is eSun Elastic 83A flexible. For the flexible I used 10% infill, 1 perimeter, 2…
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3D Printed Ethernet Protective Sleeve/Boot and Strain Relief
When making your own Ethernet cables if it’s a cable that’s going to be moved around a lot and/or abused then it’s a good idea to protect the retainer tab and add some strain relief. This 3D printed part adds a boot or sleeve that protects the modular connector on the ends and adds cable…
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SD memory card register decoder
This is a utility for decoding SD card registers. On Linux if you have a MMC type card reader (not USB) then you can get the register values with a command similar to: Replace X with the number of your device (use lsblk). That will return the CID and CSD respectively. The CID contains identification…
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applesmc-next: Battery charge thresholds for Linux on Apple hardware
Update 2025-07-31: Version 0.1.6 with changes to compile on newer kernels. The AUR package has been updated as well. This is a set of patches for the Linux kernel that enable changing the battery charge thresholds. This is useful for example to limit the charge to 80% to prolong the life of your battery if…
