Search found 434 matches

by dragonator
Wed Nov 13, 2019 5:04 pm
Forum: Plan B
Topic: Modifiying Creality Ender 3 with Plan B
Replies: 5
Views: 1009

Re: Modifiying Creality Ender 3 with Plan B

There are few companies that make piezo inkjet. Epson and Xaar almost by definition make piezo inkjet, HP and Canon almost by definition make thermal inkjet. Pinouts are always challenging to find, since this is not open technology.
by dragonator
Sun Nov 10, 2019 7:56 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 536
Views: 314928

Re: Hacking the HP45

Hello, I myself have little experience with identifying printheads. I do know there are subtle differences between several variations of printhead, one of them the HP45, and expect that there is something in the background that allows you to identify heads. I however have no facts on this. What prob...
by dragonator
Sun Nov 03, 2019 4:33 pm
Forum: Plan B
Topic: Modifiying Creality Ender 3 with Plan B
Replies: 5
Views: 1009

Re: Modifiying Creality Ender 3 with Plan B

I do not know any, since the C6602A is a bit of an odd printhead. The closest thing I know is the XAAR 128, but it already has 128 nozzles, and a serial interface.
by dragonator
Sun Nov 03, 2019 9:08 am
Forum: Plan B
Topic: Modifiying Creality Ender 3 with Plan B
Replies: 5
Views: 1009

Re: Modifiying Creality Ender 3 with Plan B

Hello Plan B firmware does have all the handling for motion and inkjet combined. That is however everything that matches. Also be aware that even now I am not a great programmer, and in the Plan B time I was an even worse programmer. I cannot guarantee that modifying the firmware will be simple. 1. ...
by dragonator
Wed Oct 23, 2019 4:09 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 536
Views: 314928

Re: Hacking the HP45

How many amperes consumes HP 45? Each nozzle does 300mA, and I can fire at most 5 at a time, so the peaks are around 1.5A. Average should not go above 1A. @inkjet: Your schematic shows a pulldown on the address. However, my experience is that I needed separate resistors pulling down when I used led...
by dragonator
Sun Oct 20, 2019 4:07 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 536
Views: 314928

Re: Hacking the HP45

MAsic12345 wrote:
Wed Oct 16, 2019 5:33 pm
dragonator wrote:
Mon Oct 07, 2019 5:00 pm
what is the speed of spitting HP 45
how fast can they fire?
what speed did are you achieve
I manage 50mm/s at 600 DPI. This gives 1200 firings per nozzle per second.
by dragonator
Mon Oct 07, 2019 5:15 pm
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 37042

Re: Hacking cartridge HP 84/85

One more thing to try that will actually do it all together. I hope I wrote it right, it is difficult for me to test here. I works on port 7 bits 0 to 3, so pin 10-13. Let me know if it actually works or where it gives errors. byte pinTable[] = {10,12,11,13}; //port 7 bit 0,1,2 and 3 char a[] = {1,0...
by dragonator
Mon Oct 07, 2019 5:00 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 536
Views: 314928

Re: Hacking the HP45

I cannot judge whether the pins are connected correctly, but overall it seems like the right thing. I would lower the delay between clock 1 and clear 0 to 2 microseconds, but other than that, it seems fine. Do wipe the head before printing. It will literally not work without it. Other than that, I c...
by dragonator
Sun Oct 06, 2019 1:41 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 536
Views: 314928

Re: Hacking the HP45

Time to pick up where I left off earlier this year. A quick recap of what I have done for the HP45 before the Turret hiatus. DMA will make the printing process a lot quicker. It will place the 300ms+ function to print away from the processor, and move it to the DMA hardware. This effectively makes i...
by dragonator
Sun Oct 06, 2019 10:34 am
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 37042

Re: Hacking cartridge HP 84/85

Now that you have confirmed that the code works, you are 80% of the way there. The 25MHz is going to be the absolute maximum. Two things to explain what is happening here: 1, the very basics, but important. Binary numbers. Microcontrollers work with binary numbers. Each binary digit is called a bit....