Search found 588 matches

by dragonator
Sun Dec 03, 2023 9:26 am
Forum: 3DP printing
Topic: Some issue when building Oasis 3DP
Replies: 1
Views: 2506

Re: Some issue when building Oasis 3DP

When you press prime, does any ink come out of the nozzles? Have you ever cleaned the printhead, with either water or alcohol? The correct temperature and 300/300 means the controller can control the nozzles, but if the nozzles are clogged the printhead will still not print.
by dragonator
Fri Oct 20, 2023 5:51 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 944758

Re: Hacking the HP45

Don't worry, your order has been received. I will package and ship it tomorrow.
by dragonator
Thu Oct 19, 2023 7:37 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 944758

Re: Hacking the HP45

The old design board indeed required 2x a 2 layer board. This design has been replaced for quite a while though. The new design requires a basic 2 layer PCB to work. For JLC (or any other board house) no exotic settings are required. The only thing that is helpful is gold plating. Most cheap PCB's a...
by dragonator
Wed Oct 18, 2023 4:58 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 944758

Re: Hacking the HP45

There is a breakout board design in the make package on the Oasis page (https://hackaday.io/project/86954-oasis-3dp) (https://hackaday.io/project/86954/files). This is a KiCAD board design that you can use. It uses the HP45 connector to interface with the HP45 inkjet printhead (https://www.tindie.co...
by dragonator
Wed Oct 11, 2023 5:22 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 944758

Re: Hacking the HP45

Hello, The biggest difference between V3 and V4 is printing speed, due to the use of DMA. Ease of manufacture and self checking capabilities are a bonus on the V4. Printing quality is exactly the same, since the printing quality comes mostly from the HP45. I do not know of any other printheads that ...
by dragonator
Sun Oct 08, 2023 9:24 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 944758

Re: Hacking the HP45

Hello, Sadly, there is not. It is a part of the reason why I stopped with the HP45 project. The controller in it's current form uses the DMA of the Teensy 3.5 and is pretty much hardcoded. The Teensy 4.1 has a completely different way of DMA, so this was too complicated for me to alter. It should be...
by dragonator
Fri Jul 28, 2023 7:18 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 944758

Re: Hacking the HP45

The best I can do is a manual for the C8855 driver, which I can send by mail. It has no software, and I don't think a wiring diagram of the C8855 itself, but it does explain how to roughly use the C8855.
by dragonator
Thu May 04, 2023 6:30 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 944758

Re: Hacking the HP45

I have heard hints of stuff like this happening before, but I have never seen it personally. My quess would be to measure resistance in the "wrong" direction, ie positive lead on ground, and negative leads on addresses and primitives. I have noticed that resistance is based on polarity. Ho...
by dragonator
Sun Mar 19, 2023 8:02 am
Forum: 3DP printing
Topic: working on slicer in blender
Replies: 22
Views: 10132

Re: working on slicer in blender

I did look at PJRC, the maker of the Teensy and indeed they expect the 3.2 and 3.5 to never fully recover from these shortages. I do not plan to update the firmware. I have mostly stopped with the inkjet for the time being. The Teensy 4.0 and 4.1 can be made to work, but there are 2 ways. 1. Use the...
by dragonator
Tue Mar 07, 2023 6:26 pm
Forum: Plan B
Topic: Nozzle stops spraying about 1/3 of the printing
Replies: 7
Views: 6288

Re: Nozzle stops spraying about 1/3 of the printing

At this point all I can offer is suggestions as to what you can try. I have never had these issues, and I don't have the hardware to try and reproduce. The thing I'd try is lowering the voltage. If you have a DC-DC converter, you can hook the boost demultiplexer to it (after removing a few of the co...