Search found 595 matches

by dragonator
Thu Mar 17, 2022 4:57 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890019

Re: Hacking the HP45

A single power supply of 12V with at least 4A should work fine. Vvar and 12V both being 12V is fine. I have had only one example where the 12V for Vvar was too much. 7809 can only provide 1A, this is too little.
by dragonator
Fri Mar 11, 2022 6:29 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890019

Re: Hacking the HP45

I have no experience with Teensy LC. I think it lacks the more advanced features to print like I am doing now like DMA, but I see no reason why it should be impossible to print with at all. It might just be slow and RAM constrained to do much. What end goal do you hope to reach with you project and ...
by dragonator
Mon Feb 28, 2022 8:21 pm
Forum: 3DP printing
Topic: Standalone controller V4.0
Replies: 58
Views: 242143

Re: Standalone controller V4.0

There is a simple voltage divider driven by 3,3V. Any value which does not compute to a reasonable value is returned as a negative value indicating what is wrong. A -2 is the most common value and usually indicates no printhead is present.
by dragonator
Fri Feb 18, 2022 6:24 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890019

Re: Hacking the HP45

You can supply both with 12V under most circumstances. I have had examples where Vvar being 12V burned out nozzles, but that is only something to keep an eye on. An HP45 needs around 3A is you want to be save. Anything lower than 2A is not adviced.
by dragonator
Wed Feb 16, 2022 6:23 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890019

Re: Hacking the HP45

The Pi being too slow could be the reason, though I would have to verify it first. The function which would be causing you the trouble is "self.InkjetSetPosition()" in "def PrintSVG(self):" in "Oasis controller.py". In my version this one sits around line 650. There is ...
by dragonator
Mon Feb 14, 2022 4:54 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890019

Re: Hacking the HP45

Is this shift also in the preview image, or only when it is printing. If it is in the preview image please send me the file so I can alter the parser. If it is only when printing there might be an issue in the updating of the coordinates of the printhead. It might be that the GRBL did not send a pro...
by dragonator
Sun Feb 13, 2022 8:34 am
Forum: 3DP printing
Topic: Standalone controller V4.0
Replies: 58
Views: 242143

Re: Standalone controller V4.0

I read your previous post wrong. I though you stuck the same printhead into another controller, not another head in the same controller. If changing the HP45 gives a good reading the printhead itself would indeed be more likely to be the problem. It is good to know that there are printheads in circu...
by dragonator
Sat Feb 12, 2022 7:52 am
Forum: 3DP printing
Topic: Standalone controller V4.0
Replies: 58
Views: 242143

Re: Standalone controller V4.0

I do not know precisely what it is, but I do know what circuit is causing it and what might be the issue. HP45 has 2 internal resistors. TSR and 10X. Both V4 an V3 use the same 330 ohm resistor feeding the 2 pins on the HP45 to make a voltage divider. On the V3.02 it should be R11 and R12. The contr...
by dragonator
Tue Feb 08, 2022 5:14 pm
Forum: Plan B
Topic: Printing Ceramic Parts
Replies: 5
Views: 12579

Re: Printing Ceramic Parts

It has been a while since I worked with the C6602. I know that the nozzles are in a metal plate which is fragile. If you are going to give it another try I would first print with the printhead to make sure it works before making another attempt. Also you can try and fill the printhead with something...
by dragonator
Sat Feb 05, 2022 10:08 am
Forum: I made a:
Topic: GlaDOS lamp
Replies: 25
Views: 103600

Re: GlaDOS lamp

It has been a great while since I even touched the files, so my memories are a bit fuzzy. If I remember right, there are 3 different files. 1 file with only an aperture shaped hole, 1 with an aperture shape hole with fan mounting holes, and one without any gaps. All have a hole for an LED. In this c...